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Sitara ARM processor
View on Wikipediafrom Wikipedia
| General information | |
|---|---|
| Marketed by | Texas Instruments |
| Designed by | Texas Instruments |
| Common manufacturer |
|
| Performance | |
| Max. CPU clock rate | 450 MHz AM18x to 1.5 GHz AM57x |
| Physical specifications | |
| Cores |
|
| Architecture and classification | |
| Instruction set | ARMv7 and ARMv8 |
The Sitara Arm Processor family, developed by Texas Instruments, features ARM9, ARM Cortex-A8, ARM Cortex-A9, ARM Cortex-A15, and ARM Cortex-A53 application cores, C66x DSP cores, imaging and multimedia acceleration cores, industrial communication IP, and other technology to serve a broad base of applications. Development using Sitara processors is supported by the open source Beagle community as well as Texas Instruments' open source development community.[1][2]
Products featuring Sitara Arm
[edit]- Nest, a learning thermostat[3]
- Netgate SG-1000, a micro firewall based on pfSense[4]
- MOD/MOD Live, makes GPS-enabled Micro Optics Displays (MOD) for snow goggles[5]
- BeagleBone Black single board computer
- BeagleBoard-X15 single board computer
- Lego Mindstorms EV3 – Lego Mindstorms EV3 bricks use the ARM9 TI Sitara AM1x
The Sitara family
[edit]Sitara Arm processors available today include:
| Model number | Core | DMIPs | GPU | Memory | OS | Features | Applications | Pricing | Datasheet | |
|---|---|---|---|---|---|---|---|---|---|---|
| AM18x[6] | ARM9 up to 456 MHz | Up to 410 | N/A | LPDDR1/DDR2 | Linux, StarterWare, WinCE | LCD controller, SATA, video in/out, 10/100 Mbit/s EMAC, USB w/PHY | Smart meter, Wi-Fi router | Starting at $4.55 (10K) | http://www.ti.com/lit/ds/symlink/am1808.pdf | |
| AM243x[7] | up to two dual 800 MHz ARM Cortex-R5F plus one 400 MHz Arm Cortex-M4F | Up to 6000 | none | 2MB of On-chip RAM, plus external LPDDR4, DDR4 | NoRTOS or RTOS | two Gigabit Ethernet, USB3, PCIe, etc. | performance microcontroller for Motor Drives, Remote I/O, Industrial Robots, etc. | $9.879 to $18.46 (1ku) | https://www.ti.com/lit/ds/symlink/am2434.pdf | |
| AM335x[8] | ARM Cortex-A8 up to 1 GHz | Up to 2000 | SGX530 | LPDDR1/DDR2/ DDR3/DDR3L |
Linux, Android, StarterWare, WinCE, FreeBSD, OpenBSD | LCD Controller, 10/100/1000 Mbit/s EMAC, 2xCAN, USB OTG w/PHY, 2xPRU-ICSS[9] | PND, Connected home, industrial automation | Starting at $4.96 (1ku) | http://www.ti.com/lit/ds/symlink/am3358.pdf | |
| AM35x[10] | ARM Cortex-A8 up to 600 MHz | Up to 1200 | SGX530 | LPDDR1/DDR2 | Linux, Android, WinCE | display subsystem, video in/out, 10/100/1000 Mbit/s EMAC, CAN, USB w/PHY | IA, PLC, Infotainment | Starting at $12.25 (10K) | http://www.ti.com/lit/ds/symlink/am3517.pdf | |
| AM37x[11] | ARM Cortex-A8 up to 1 GHz | Up to 2000 | SGX530 | LPDDR1 | Linux, Android, WinCE | display subsystem, video in/out, PoP packaging, USB, lowest power | PND, ed. tablet, PDT | Starting at $12.25 (10K) | http://www.ti.com/lit/ds/symlink/am3715.pdf | |
| AM437x[12] | ARM Cortex-A9 up to 1 GHz | Up to 2500 | SGX530 | LPDDR2/DDR3/DDR3L | Linux, TI-RTOS, Android, VxWorks, WinCE, Neutrino, Integrity | 10/100/1000 Mbit/s Ethernet Switch w/2 Ports, 4xPRU-ICSS[9] Dual camera support, Secure boot | Industrial automation, Patient monitoring, Navigation equipment, Point of Service, | Starting at $9 for 1ku | http://www.ti.com/lit/ds/symlink/am4379.pdf | |
| AM57x[13] | dual ARM Cortex-A15 up to 1.5 GHz
dual C66x DSP up to 750 MHz quad ARM Cortex-M4s for image processing and general purpose up to 212 MHz |
Up to 10500 | dual SGX544 | DDR3/DDR3L | RISC OS, Linux, TI-RTOS, Android, WinCE | 10/100/1000 Mbit/s Ethernet Switch w/2 Ports, 4xPRU-ICSS (100 Mbps Ethernet)[9] multiple Video Input Ports (parallel or CSI), USB 3.0, PCIe, SATA, and Secure Boot | Analytics, vision, embedded computing, HMI, industrial automation, industrial drives, industrial control, robotics, medical imaging, avionics | Starting at $28 for 1ku | http://www.ti.com/lit/ds/symlink/am5728.pdf | |
| AM62x,[14][15] | single, dual or quad ARM Cortex-A53 up to 1.4 GHz, ARM Cortex-M4F up to 400 MHz | Up to 12880 | 500 MHz (only AM625x) | DDR4/LPDDR4/DDR3L up to 32 GB with ECC | Linux, TI-RTOS, Android | 2x 10/100/1000 Mbit/s Ethernet, 2x PRU (only AM62xxAxC),[9] MIPI-CSI, 2x DPI/LVDS | Embedded computing, HMI, retail automation, automotive, appliance user interface and connectivity, medical equipment | preview status | https://www.ti.com/lit/gpn/am623, https://www.ti.com/lit/gpn/am625 | |
| AM65x[16] | dual or quad ARM Cortex-A53 up to 1.1 GHz,
dual ARM Cortex-R5F up to 400 MHz in isolated safety domain |
Up to 10120 | SGX544 | DDR4/LPDDR4/DDR3L up to 32 GB with ECC | Linux, TI-RTOS, Android | 10/100/1000 Mbit/s Ethernet Port, 3x PRU-ICSSG (6x Gigabit Ethernet),[9] PCIe Gen3, USB 3.0, and embedded Device Management Security Controller (DMSC) with Secure Boot | Embedded computing, HMI, industrial automation, industrial drives, industrial control, robotics, motor control, grid infrastructure, data concentrator | preview status | https://www.ti.com/lit/gpn/am6548 |
See also
[edit]- TI OMAP (Open Multimedia Applications Platform) SoC family
References
[edit]- ^ "BeagleBoard". BeagleBoard.
- ^ "OpenLink". Texas Instruments.
- ^ "Nest Thermostat Teardown".
- ^ "Netgate SG-1000".
- ^ "Recon Instruments revolutionizes ski experiences with MOD Live optics and sensors kit for snow goggles, using complete TI solution – embedded processing, wireless connectivity, analog and power management" (PDF). Texas Instruments.
- ^ "AM18x". Texas Instruments.
- ^ "AM243x" (PDF). Texas Instruments.
- ^ "AM335x Arm Cortex-A8 processors". Texas Instruments.
- ^ a b c d e "PRU-ICSS: Programmable Realtime Unit SubSystem (PRU) and Industrial Communication Subsystem". 29 December 2020.
- ^ "AM35x". Texas Instruments.
- ^ "AM37x". Texas Instruments.
- ^ "AM437x". Texas Instruments.
- ^ "AM57x". Texas Instruments.
- ^ "AM623x". Texas Instruments.
- ^ "AM625x". Texas Instruments.
- ^ "AM65x". Texas Instruments.
External links
[edit]Sitara ARM processor
View on Grokipediafrom Grokipedia
The Sitara ARM processors are a family of scalable, system-on-chip (SoC) microprocessors developed by Texas Instruments (TI), featuring ARM Cortex-A cores and integrated peripherals for efficient edge computing in embedded systems.[1] These processors target applications in automotive advanced driver-assistance systems (ADAS), industrial automation, Internet of Things (IoT) devices, smart cameras, robotics, and human-machine interfaces (HMI).[1]
Introduced in 2011 with the AM335x series based on the single-core ARM Cortex-A8, the Sitara family has evolved to include higher-performance models such as the AM57x with dual ARM Cortex-A15 cores and the AM62x with dual 64-bit ARM Cortex-A53 cores.[2][3][4] Key architectural elements include power-efficient designs, hardware accelerators for vision and deep learning, functional safety certifications (e.g., ISO 26262 for automotive), and security features like secure boot and encryption.[1][5]
The processors support open-source operating systems such as Linux and Android, with TI providing software development kits (SDKs) that enable unified development across the family for rapid prototyping and deployment.[1] Notable for their cost-effectiveness and broad performance range—from low-power IoT nodes to high-end multimedia processing—the Sitara lineup facilitates heterogeneous computing by combining ARM CPUs with digital signal processors (DSPs) and co-processors for optimized real-time operations.[6][7] This versatility has made them integral to safety-critical and AI-driven innovations across industries.[8]
These early series demonstrated efficient power scaling, with the AM335x achieving approximately 0.36 W per MHz in active modes at 1 GHz, enabling battery-friendly or fanless operation in embedded systems while paving the way for multi-core evolutions.[11][25][3]
These series provide a progression from cost-optimized entry points to scalable, AI-enhanced processors, with the AM62x offering accessible performance for basic vision tasks and the AM69x enabling advanced, multi-stream processing in expansive edge deployments.[16][17]
History and Development
Origins and Initial Launch
Texas Instruments introduced the Sitara brand in October 2009 as part of a major expansion of its embedded processor portfolio, unifying its ARM-based offerings previously derived from DaVinci video processors and OMAP mobile platforms into a single family targeted at industrial and embedded applications.[9] This rebranding aimed to provide a cohesive lineup of scalable ARM processors for low-power, cost-sensitive designs, emphasizing integration for connectivity and control in non-consumer markets.[10] Following the brand launch, the first devices were the AM35x series with ARM Cortex-A8 cores at up to 600 MHz, targeted at industrial applications. The AM18x series, based on the ARM9 core, followed in 2010, with clock speeds reaching up to 456 MHz and optimized for industrial control applications such as human-machine interfaces and automation.[11] The AM1808 emerged as the flagship of this early lineup, featuring a 375-456 MHz ARM926EJ-S core, integrated peripherals for real-time processing, and support for TI-RTOS to enable deterministic operations in embedded systems.[12] These processors prioritized low power consumption and reliability, marking Sitara's initial focus on bridging legacy ARM9 architectures with modern embedded needs without the multimedia emphasis of prior DaVinci lines. In October 2011, Texas Instruments launched the AM335x series, the first Sitara processors priced under $5 in volume, incorporating a Cortex-A8 core clocked up to 1 GHz and an integrated PowerVR SGX530 GPU for enhanced graphics capabilities in low-power designs.[2] This release solidified Sitara's position in cost-effective embedded computing, with early adoption in development platforms like the BeagleBone, which leveraged the AM335x for open-source prototyping in industrial and educational applications.[13] The AM335x maintained compatibility with TI-RTOS while expanding support for Linux, facilitating rapid deployment in real-time control and connectivity-focused systems.Key Milestones and Evolution
The Sitara ARM processor family, developed by Texas Instruments, underwent substantial evolution starting in the mid-2010s, transitioning from earlier ARM9-based designs to more powerful multi-core architectures optimized for embedded applications requiring high performance and real-time processing. This period saw a shift toward integrating advanced ARM Cortex-A series cores with specialized digital signal processors (DSPs) and connectivity features to address growing demands in industrial and multimedia systems. In 2015, Texas Instruments introduced the AM57x series, featuring dual Cortex-A15 cores operating at up to 1.5 GHz alongside an integrated C66x DSP for enhanced signal processing capabilities, marking a key step in delivering high-performance computing within a single system-on-chip (SoC).[14] This release emphasized advanced integration of compute, real-time control, and multimedia functions, setting the stage for scalable embedded solutions.[6] The AM64x family was announced in 2021, introducing a hybrid architecture with ARM Cortex-A53 application cores combined with real-time Cortex-R5F cores, and built-in support for Time-Sensitive Networking (TSN) to enable deterministic industrial Ethernet communications.[15] This design focused on functional safety and scalability for industrial automation, bridging high-level processing with low-latency control.[4] In June 2022, the AM62x series launched with quad Cortex-A53 cores reaching up to 1.4 GHz, incorporating a dedicated deep learning accelerator to support edge AI and vision processing tasks efficiently.[8] This iteration prioritized low-power operation while enabling advanced machine learning inference directly on the device.[16] The AM69x processors debuted in 2023, equipped with octal Cortex-A72 cores operating at up to 2 GHz, PCIe Gen3 interfaces, and support for high-bandwidth peripherals, targeting demanding networking and automotive workloads.[17] These SoCs represented a leap in multi-core performance and I/O scalability for cost-sensitive, high-compute environments.[18] The AM62A series was announced in 2023 with enhanced security features, including secure boot mechanisms and integrated crypto engines, alongside improvements in power efficiency to better suit automotive and edge deployments. These features built on the AM62x foundation, incorporating a hardware security module (HSM) for IP protection and advanced power management.[5] In 2025, the AM62Px variants extended the family with improved multimedia and connectivity capabilities. As of November 2025, no major new Sitara families beyond these extensions have been announced, with Texas Instruments continuing to emphasize ecosystem enhancements and software optimizations across existing families.| Year | Model | Key Innovation |
|---|---|---|
| 2015 | AM57x | Dual Cortex-A15 cores + C66x DSP integration |
| 2021 | AM64x | Hybrid Cortex-A53 + R5F cores with TSN support |
| 2022 | AM62x | Quad Cortex-A53 cores + deep learning accelerator |
| 2023 | AM69x | Octal Cortex-A72 cores with PCIe Gen3 |
| 2023 | AM62A | Enhanced security (secure boot, crypto engines, HSM) and power efficiency |
Architecture and Features
Processor Cores and Performance
The Sitara ARM processors employ a range of CPU core architectures, evolving from early 32-bit designs to modern 64-bit configurations to meet diverse embedded computing needs. Initial models, such as the AM17xx series, feature the ARM926EJ-S core based on the ARMv5TE architecture, operating at clock speeds up to 456 MHz with a performance of approximately 456 DMIPS. These cores include 16 KB instruction and 16 KB data caches, providing basic efficiency for industrial control applications.[19] Subsequent generations introduced the ARM Cortex-A8 core in the AM335x family, utilizing the ARMv7-A architecture with NEON SIMD extensions for enhanced multimedia processing, achieving up to 1 GHz clock speeds and 2,000 DMIPS.[3] Later Sitara processors incorporate more advanced ARMv7-A cores, including single Cortex-A9 in the AM437x series (up to 1 GHz, 2,500 DMIPS, with 32 KB L1 instruction and data caches per core plus 256 KB shared L2 cache) and dual Cortex-A15 in the AM57x series (up to 1.5 GHz, 10,500 DMIPS total, with 32 KB L1 caches per core and 1 MB shared L2 cache).[20][21] The Cortex-A15 configuration in the AM57x delivers approximately five times the computational performance of the AM335x's Cortex-A8 in general-purpose tasks, attributed to its dual-core design and higher efficiency (3.5 DMIPS/MHz per core), while maintaining compatibility with ARMv7-A software ecosystems.[21][3] Modern Sitara families, such as the AM62x, shift to 64-bit ARMv8-A with up to quad Cortex-A53 cores clocked at 1.4 GHz, offering scalable performance up to 16,800 DMIPS in quad-core configurations, supported by 32 KB L1 caches per core and 256–512 KB shared L2 cache.[16][22] Higher-performance variants, such as the AM69A with up to eight Cortex-A72 cores at 2 GHz, extend capabilities for demanding AI and vision applications.[23] These processors emphasize power efficiency, with idle consumption under 400 mW in typical OS idle modes.[24] Hybrid integration includes real-time cores like dual Cortex-R5F (up to 800 MHz, lockstep-capable for functional safety, with 32 KB cache per core) for deterministic tasks and a single Cortex-M4F (up to 400 MHz, with 256 KB SRAM) for low-power control and microcontroller duties.[16]| Processor Family | Core Type | Max Clock Speed | DMIPS (Total) | L2 Cache Size |
|---|---|---|---|---|
| AM17xx (Early) | ARM926EJ-S | 456 MHz | 456 | N/A (L1 only) |
| AM335x | Cortex-A8 | 1 GHz | 2,000 | 256 KB |
| AM437x | Cortex-A9 | 1 GHz | 2,500 | 256 KB |
| AM57x | Dual Cortex-A15 | 1.5 GHz | 10,500 | 1 MB |
| AM62x (Modern) | Quad Cortex-A53 | 1.4 GHz | 16,800 | 256–512 KB |
Integrated Peripherals and Accelerators
The Sitara ARM processors integrate a variety of on-chip peripherals and accelerators to support embedded applications requiring real-time processing, multimedia handling, and robust connectivity. These components, including programmable real-time units, graphics processors, and hardware security modules, enable efficient offloading from the main CPU cores, enhancing overall system performance and power efficiency across different product families.[4] In terms of multimedia capabilities, early Sitara models such as the AM335x incorporate PowerVR SGX530 and SGX544 GPUs, which deliver up to 20 million polygons per second and support OpenGL ES 2.0 and Direct3D Mobile for 2D/3D graphics rendering. Higher-end families like the AM57x feature dual-core PowerVR SGX544 GPUs operating at up to 532 MHz, capable of advanced 3D graphics acceleration. For video processing, the IVA-HD subsystem in AM335x and AM57x provides hardware-accelerated H.264 encoding and decoding, supporting up to 1080p at 30 fps in early variants and extending to 4K at 15 fps or 1080p at 60 fps in later models. Modern entry-level processors, such as the AM62x, include a 3D GPU with over 500 million pixels per second fill rate, supporting OpenGL ES 3.1 and Vulkan 1.2 for resolutions up to 2048x1080 at 60 fps. Additionally, the AM62Ax integrates a Vision Processing Accelerator (VPAC) with an Image Signal Processor (ISP) handling up to 5 megapixels at 60 fps, including 12-bit RGB-IR support.[3][21][16][5] Digital signal processing is facilitated by dedicated accelerators, with the AM57x featuring up to two C66x DSP cores clocked at 1.5 GHz each, offering fixed- and floating-point operations for audio, image, and signal processing tasks, including 32 fixed-point multiplies per cycle. In contrast, modern scalable series like the AM62Ax employ a C7x DSP at 1.0 GHz delivering 40 GFLOPs, augmented by a Matrix Multiply Accelerator (MMA) providing up to 2 TOPS at INT8 precision for deep learning inference. Real-time processing is further supported by the PRU-ICSS subsystem across families; for instance, the AM335x and AM57x include dual-core PRUs at 200 MHz with 8 KB RAM each, programmable for custom real-time I/O and industrial protocols, while the AM62x offers a dual-core PRU at 333 MHz. The AM64x extends this with two PRU-ICSSG instances featuring three PRUs for enhanced industrial communication.[21][5][3][16][4] Connectivity interfaces vary by family to address diverse embedded needs. Ethernet support includes dual Gigabit ports in the AM335x and AM57x via CPSW with RGMII/MII interfaces and IEEE 1588 timing, evolving to 2- or 3-port Gigabit switches with Time-Sensitive Networking (TSN) in the AM62x and AM64x for deterministic industrial data transfer. USB options range from dual USB 2.0 High-Speed DRD ports (480 Mbps) in the AM335x and AM62x to SuperSpeed USB 3.0 (5 Gbps) and USB 3.1 Gen1 in the AM57x and AM64x. PCIe interfaces provide Gen2 single- or dual-lane support (up to 5 GT/s) in the AM335x, AM57x, and AM64x, with some models compliant to PCIe Base Specification Rev 4.0. Industrial I/O includes up to 2 CAN-FD ports (8 Mbps) in the AM62x and AM64x, alongside 3 CAN 2.0 ports (1 Mbps) in the AM57x; MMC/SD controllers support eMMC 5.1 and SD 4.1 with speeds up to 200 MHz; and UARTs number up to 8 in the AM64x, 10 in the AM57x, and 6 in the AM335x, with baud rates to 12 Mbps.[3][21][16][4] Security features are embedded via hardware crypto engines supporting AES (128/192/256-bit), SHA-2, DES/3DES, RNG, and public-key acceleration (RSA/ECC) in the AM57x, AM62x, and AM64x, often integrated within a Hardware Security Module (HSM). Secure boot with root-of-trust and anti-rollback protection is standard, enforced through eFuses and secure ROM across families. The PRU-ICSS contributes to isolated real-time I/O security by enabling deterministic, low-latency control loops.[21][16][4][3] Memory subsystems support DDR3L, DDR4, and LPDDR4 interfaces, with bus widths up to 32-bit in the AM62x (extending to 72-bit with ECC in select configurations) and 16-bit in the AM64x. Addressable capacities reach up to 4 GB in the AM57x and AM62x, and 2 GB in the AM64x, with integrated error-correcting code (ECC) for single- and double-error detection/correction on on-chip SRAM and external DDR. On-chip SRAM varies from 2.5 MB with ECC in the AM57x to 2 MB OCSRAM in the AM64x.[21][16][4]Product Families
Early ARM9 and Cortex-A8 Series
The early ARM9 and Cortex-A8 series of Sitara processors laid the foundation for Texas Instruments' embedded computing portfolio, targeting cost-sensitive industrial, automation, and connectivity applications with single-core architectures optimized for low power and real-time performance. These series introduced scalable options for upgrading from legacy designs, emphasizing integrated peripherals for human-machine interfaces (HMIs), networking, and basic multimedia, while establishing TI's position in the sub-$5 MPU market for long-lifecycle deployments. The AM18x family, introduced in 2010, featured the ARM926EJ-S core operating at clock speeds ranging from 300 MHz to 456 MHz, depending on the variant and supply voltage (1.0V to 1.3V). Each core included 16 KB instruction cache and 16 KB data cache, with an additional 8 KB vector table RAM and 128 KB on-chip SRAM for efficient code execution and data handling. Memory support encompassed up to 256 MB DDR2 or mDDR via a dedicated controller, alongside asynchronous interfaces through the Enhanced Memory Interface A (EMIFA) that accommodated 8- or 16-bit NOR flash devices with up to four chip selects, enabling bootable configurations up to several megabytes in practice for industrial firmware storage. Variants like the AM1808 supported extended industrial temperature ranges from -40°C to 105°C, making it suitable for harsh environments in factory automation and motor control systems.[11] Building on this, the AM35x series, launched around 2009, transitioned to the more advanced ARM Cortex-A8 core at up to 600 MHz, with 16 KB L1 instruction cache, 16 KB L1 data cache, and 256 KB unified L2 cache featuring error-correcting code (ECC) for reliability. Similar to the AM18x in memory support (up to 256 MB DDR2/mDDR), it added enhanced multimedia capabilities via the IVA2.2 imaging/video/audio accelerator, which handled MPEG-4 encoding/decoding at up to D1 resolution (720x480) for basic video processing in portable media players and digital signage. Integrated USB 2.0 OTG with high-speed (480 Mbps) PHY support enabled versatile host/device connectivity, while peripherals like dual-display controllers (up to 1024x768 resolution) and 10/100 Mbps Ethernet MAC further expanded its role in connected embedded designs. The AM3517 variant, for instance, included PowerVR SGX530 3D graphics acceleration for up to 20 million polygons per second, differentiating it for graphical user interfaces.[25] The AM33x series, released in 2011, refined the Cortex-A8 architecture with clock speeds scaling from 300 MHz to 1 GHz across performance points (OPP50 to Nitro), maintaining the 32 KB L1 instruction/data caches and 256 KB L2 cache for improved instruction throughput via NEON SIMD coprocessor support. It supported up to 1 GB of DDR2, DDR3, or LPDDR memory (16-bit interface, up to 800 MHz DDR3), with integrated 10/100/1000 Mbps Ethernet MAC (up to dual ports with IEEE 1588 precision timing) and optional 2D/3D graphics via PowerVR SGX530 on select models for resolutions up to 1280x1024. These processors solidified TI's market presence by offering pin-compatible scalability for industrial Ethernet protocols like PROFINET and EtherNet/IP, powering applications in PLCs and gateways. In 2019, TI announced extended lifecycle support exceeding 10 years for the AM335x devices, ensuring availability for safety-critical systems requiring long-term stability.[3][2] Key variants within the AM33x, such as the AM3352, AM3358, and AM3359, provided tiered feature sets: the AM3352 operated at up to 600 MHz without dedicated graphics but included dual Gigabit Ethernet ports for networking-focused designs; the AM3358 and AM3359 reached 1 GHz with integrated 3D graphics and Programmable Real-Time Unit Industrial Communication Subsystem (PRU-ICSS) for real-time protocols, plus dual Ethernet, targeting high-performance HMIs and motion control. The following table compares core attributes across representative devices in these series:| Device | Core | Max Clock (MHz) | L1 Cache (I/D, KB) | Key Peripherals | Power Efficiency Example | Temp Range (°C) |
|---|---|---|---|---|---|---|
| AM1808 | ARM926EJ-S | 456 | 16/16 | EMIFA (NOR/EMIF), 10/100 Ethernet | ~0.66 mW/MHz (300 mW at 456 MHz) | -40 to 105 |
| AM3517 | Cortex-A8 | 600 | 16/16 | IVA2.2 (MPEG4), USB OTG, 3D GPU | N/A | -40 to 105 |
| AM3352 | Cortex-A8 | 600 | 32/32 | Dual Gb Ethernet, No GPU | ~0.5 mW/MHz (300 mW at 600 MHz) | -40 to 105 |
| AM3358 | Cortex-A8 | 1000 | 32/32 | 3D GPU, PRU-ICSS, Dual Gb Ethernet | 0.36 mW/MHz (~360 mW at 1 GHz) | -40 to 105 |
High-Performance Multi-Core Series
The high-performance multi-core series of Sitara ARM processors, introduced starting in 2015, targets demanding industrial and automotive applications requiring integrated real-time processing, multimedia acceleration, and connectivity. These processors feature heterogeneous architectures combining high-throughput ARM Cortex-A cores with specialized coprocessors and DSPs, enabling scalable performance for tasks like advanced vision systems and precise control. Key offerings include the AM57x family, launched in October 2015, and the AM64x family, announced in June 2021, both emphasizing multi-core configurations optimized for throughput and determinism.[14][26] The AM57x processors provide dual ARM Cortex-A15 cores operating at up to 1.5 GHz, paired with dual ARM Cortex-M4 coprocessors for real-time tasks and dual TI C66x floating-point DSP cores running at up to 750 MHz for signal processing. They include a 1 MB shared L2 cache for the A15 cores, support for PCIe Gen2 interfaces with up to two 5 GT/s lanes, and up to 4 GB of DDR3 memory across dual controllers. Pricing for entry-level AM57x variants starts at approximately $27 in 1,000-unit quantities, making them suitable for high-volume deployments. This architecture delivers robust multimedia capabilities, including hardware-accelerated 1080p60 video decode for H.264 and MPEG-4 formats.[21][27][21][28][21][21][29][28] The AM64x processors feature a dual-core ARM Cortex-A53 cluster at up to 1 GHz with a 256 KB shared L2 cache (SECDED ECC protected), complemented by up to four ARM Cortex-R5F cores at 1 GHz for deterministic real-time operations and a single ARM Cortex-M4F core. Overall system SRAM totals 1.7 MB, including tightly coupled memory for the R5F cores. Integrated PRU-ICSSG subsystems enable gigabit Time-Sensitive Networking (TSN) Ethernet protocols, supporting industrial standards like EtherCAT, PROFINET, and EtherNet/IP for low-latency communication. The family is certified for functional safety under ISO 26262 (up to ASIL-D), with variants such as the AM642 (dual A53 + dual R5F) and AM644 (dual A53 + quad R5F). Power consumption typically ranges from 1-5 W depending on configuration and workload, facilitated by advanced power management including integrated LDOs.[4][15][4][4][4][30][4][31] These series excel in specialized performance niches: the AM57x suits vision and robotics applications, leveraging its DSP and video accelerators for real-time image processing and 1080p60 decoding in embedded systems. In contrast, the AM64x focuses on real-time industrial control, providing deterministic networking via TSN-enabled Ethernet for factory automation and motion control.[32][28][33][4]| Variant | A53 Cores | R5F Cores | Package | Power Envelope (Typical) |
|---|---|---|---|---|
| AM6422 | Dual @ 1 GHz | Dual @ 1 GHz | 324-pin BGA (15 × 15 mm) | 1-3 W |
| AM6442 | Dual @ 1 GHz | Quad @ 1 GHz | 441-pin FCBGA (17.2 × 17.2 mm) | 2-5 W |
Modern Entry-Level and Scalable Series
The modern entry-level and scalable series of Sitara ARM processors, introduced starting in 2022, emphasizes cost-effective designs with integrated AI acceleration for edge computing applications, balancing low power consumption, scalable performance, and support for vision processing. The AM62x family, launched in 2022, features up to a quad-core 64-bit Arm Cortex-A53 processor subsystem operating at up to 1.4 GHz, paired with a 512 KB shared L2 cache protected by SECDED error correction.[16] This series includes an integrated neural processing unit (NPU) delivering 2 TOPS of AI performance, enabling efficient deep learning inference for tasks like object detection and image classification.[35] It supports camera interfaces such as CSI and RGB for vision-enabled systems, along with up to 2 GB of LPDDR4 memory, making it suitable for resource-constrained edge devices. Variants like the AM623 and AM625 start at pricing around $5 in 1,000-unit quantities, targeting high-volume deployments.[36] The AM62P family, introduced in December 2023, extends the AM62x for human-machine interface (HMI) applications with enhanced multimedia capabilities, including up to quad-core Arm Cortex-A53 at 1.4 GHz, 512 KB L2 cache, a 4K video codec supporting H.265 encode/decode, and triple display outputs for advanced graphical interfaces in industrial and automotive HMIs.[37] Building on this foundation, the AM69x series, released in 2023, scales up for more demanding edge computing needs with an octal-core 64-bit Arm Cortex-A72 processor subsystem at up to 2 GHz and 4 MB of shared L2 cache (2 MB per quad-core cluster).[17] It incorporates an advanced Mali GPU for graphics acceleration and four deep learning accelerators providing up to 32 TOPS total AI performance (8 TOPS per accelerator), optimized for multi-camera vision and real-time analytics.[17] Connectivity options include up to eight Ethernet ports with 10 GbE support and USB 3.2 interfaces, enhancing its role in networked edge environments like factory automation. The AM6948 variant exemplifies this scalable design for data center edge processing.[17] Scalability within the series is further enhanced by the AM62A (AM62Ax) family, introduced in 2024, which adds automotive-grade qualification (AEC-Q100) for rugged environments while maintaining the core AM62x architecture.[5] It features improved vision processing with support for 4K resolution via the integrated Image Signal Processor (ISP) and consumes less than 1.5 W in active low-power modes, enabling extended operation in battery-constrained systems.[5] This variant supports system-in-package (SIP) options with integrated RAM for compact designs, reducing board space and simplifying integration.[38]| Feature | AM62x | AM69x |
|---|---|---|
| AI Performance (TOPS) | 2 (single NPU) | 32 (four accelerators) |
| Package Options | BGA, SIP with up to 2 GB LPDDR4 | BGA, scalable multi-port configs |
| Target Scalability | Entry-level edge AI | High-performance edge networking |
