A Compact SoM Designed for Modern Industrial Applications
Calixto Systems has introduced the AM62L STAMP SOM, a highly compact 40 × 40 mm System-on-Module (SoM) built around the Texas Instruments Sitara AM62L processor family. Despite its small size, the module delivers a balanced combination of computing performance, industrial connectivity, and hardware security, making it well suited for embedded Linux applications where both space and reliability are critical.
The module primarily targets industrial automation, Human-Machine Interfaces (HMI), EV charging infrastructure, smart retail terminals, and other intelligent edge devices that demand long-term stability and flexible peripheral integration.
Reliable Processing Power with Efficient Memory Architecture
At the core of the AM62L STAMP SOM is the Texas Instruments AM62Lx processor featuring single-core or dual-core Arm Cortex-A53 CPUs operating at frequencies up to 1.25 GHz. The processor is optimized for low-power embedded computing while providing sufficient performance for industrial control, graphical interfaces, and communication-intensive workloads.
Memory options include:
- Up to 2GB LPDDR4/LPDDR4x RAM
- 8GB or 16GB eMMC onboard flash storage
- Dual SD/MMC interfaces for additional storage expansion
This hardware configuration provides an excellent balance between power efficiency and application responsiveness, making it suitable for continuously operating industrial equipment.
Industrial I/O Designed for Real-World Automation
One of the strongest aspects of the AM62L STAMP SOM is its exceptionally rich collection of industrial interfaces. Calixto Systems has equipped the module with numerous communication options that allow engineers to connect sensors, PLCs, industrial controllers, and field devices without requiring additional interface hardware.
Available interfaces include:
- 2 × Gigabit Ethernet MAC (RGMII)
- 2 × USB 2.0 High-Speed OTG
- 3 × CAN FD
- 8 × UART
- 4 × SPI
- 5 × I²C
- OSPI interface
- ADC
- PWM
- GPIO
- GPMC interface
For visualization applications, the module supports both 4-lane MIPI DSI displays and 24-bit Parallel RGB (DPI) displays, allowing developers to design anything from compact operator panels to larger industrial touchscreens.
Audio capabilities are provided through McASP interfaces together with integrated DAC support.
Built-In Security for Connected Industrial Devices
As industrial equipment becomes increasingly connected, embedded security is no longer optional. The AM62L STAMP SOM incorporates multiple hardware security technologies directly within the processor architecture.
Security features include:
- Secure Boot
- Trusted Execution Environment (TEE)
- AES hardware encryption
- Public Key Accelerator (RSA/ECC)
- DRBG
- True Random Number Generator (TRNG)
- Unique Device Identifier (Unique ID)
These capabilities help protect firmware integrity, secure communications, and prevent unauthorized software execution—particularly valuable for industrial IoT devices deployed in remote or security-sensitive environments.
Industrial-Grade Mechanical Design
The module adopts a 40 × 40 mm solder-down STAMP form factor with 37 × 4 castellated edge pads, simplifying integration into custom carrier boards while reducing connector costs.
Power is supplied through a 3.3V DC input (±5%), with power management expected to utilize Texas Instruments’ reference PMIC designed for the AM62L platform.
Two operating temperature versions are available:
- Commercial: 0°C to +70°C
- Industrial: -40°C to +85°C
This wide operating range enables deployment across factory automation, transportation, outdoor equipment, and other demanding industrial environments.
Evaluation Kit Accelerates Product Development
To shorten development cycles, Calixto Systems also offers a dedicated AM62L STAMP SOM Evaluation Kit.
The evaluation platform exposes many of the module’s major interfaces, including:
- Gigabit Ethernet
- USB
- CAN
- RS-485
- Display connectors
- mikroBUS expansion socket
These interfaces enable developers to quickly prototype embedded applications before designing custom carrier boards.
One interesting observation, however, is that although the SoM itself supports McASP audio and DAC functionality, these audio interfaces are not exposed on the evaluation board. Developers intending to build multimedia or voice-enabled products may therefore need to implement custom hardware earlier in the design process.
Linux Software Support Simplifies Embedded Development
Software support is centered on a Yocto Project-based Linux BSP, providing developers with a production-ready software environment.
The BSP includes:
- Bootloader
- Environment configuration
- Linux kernel
- Root filesystem
- Sample applications
Calixto Systems also supplies open-source hardware design files for the evaluation board, making it easier for engineers to create customized carrier boards while reducing hardware development time.
The company references its GitHub repository as a development resource. At present, however, many repositories remain relatively limited in content, suggesting that the software ecosystem is still evolving.
How the AM62L STAMP SOM Fits into Today’s Embedded Market
The AM62L STAMP SOM enters an increasingly competitive market of low-power industrial computing modules based on Texas Instruments’ AM62L platform. Compared with connector-based modules, its solderable STAMP design offers improved mechanical robustness and lower manufacturing costs, making it particularly attractive for high-volume industrial products.
Although even smaller alternatives exist, the AM62L STAMP SOM distinguishes itself by offering an excellent combination of compact dimensions, extensive industrial I/O, strong security architecture, and long-term embedded Linux support. For equipment manufacturers building industrial HMIs, EV charging stations, smart kiosks, machine controllers, or edge gateways, this module provides a practical foundation for reliable product development.
Final Thoughts
From an industrial automation perspective, the AM62L STAMP SOM demonstrates a thoughtful balance between hardware capability and deployment practicality. Its wide selection of industrial communication interfaces, comprehensive security engine, and industrial temperature support make it particularly suitable for next-generation edge computing devices.
While the software ecosystem could benefit from more mature open-source resources and the evaluation board would be more complete with exposed audio functionality, these are relatively minor limitations compared to the module’s overall strengths. For engineers seeking a compact, Linux-ready embedded computing platform with strong industrial connectivity, the AM62L STAMP SOM represents a compelling solution capable of supporting a broad range of modern automation applications.
