CC-ST-DW7A-ZM

Overview

The Digi CC-ST-DW7A-ZM is a System-on-Module (SOM) from the ConnectCore MP1 family, built on the STMicroelectronics STM32MP157C microprocessor. It features a dual-core Arm Cortex-A7 running at 650 MHz and an Arm Cortex-M4 core at 209 MHz, integrated with a 3D GPU. The module includes up to 1 GB of SLC NAND flash and up to 1 GB of DDR3L memory. Designed for industrial applications, it operates within a temperature range of -40 °C to 85 °C and utilizes the Digi SMTplus surface-mount form factor measuring 29 mm x 29 mm x 3 mm.

Feature Summary

• Processor: STMicroelectronics STM32MP157C with dual Cortex-A7 (650 MHz) and Cortex-M4 (209 MHz).
• Memory Configuration: Up to 1 GB SLC NAND flash and up to 1 GB DDR3L.
• Connectivity: Gigabit Ethernet GMAC supporting IEEE 1588v2; no wireless radios included.
• Graphics: Vivante 3D GPU supporting OpenGL ES 2.0 at up to 533 MHz.

Applications

• Industrial headless gateways requiring secure wired connectivity.
• Medical devices utilizing high-level security frameworks.
• Display devices with advanced HMIs powered by the 3D GPU.
• Embedded systems requiring long-term component longevity.

Procurement Notes

Verify the specific memory configuration required, as the part number indicates support for up to 1 GB of both SLC NAND and DDR3L. Confirm that the absence of Wi-Fi and Bluetooth modules aligns with the design requirements, as this is an Ethernet-only variant. Ensure the carrier board supports the 76-pad edge castellated or 245-pad LGA mounting options defined in the Digi SMTplus standard.

Selection Notes

Select this model over wireless variants when only wired Gigabit Ethernet is needed. Compare against the CC-WST-DW7A-NM if dual-band Wi-Fi 5 and Bluetooth 5.2 are required instead. Consider the CC-ST-DW69-ZM if the application can utilize 512 MB of memory rather than the maximum 1 GB capacity offered by the DW7A series.

Part Context

This module belongs to the Digi ConnectCore MP157 Secure Wireless/Ethernet Modules category. It shares the same processor and mechanical footprint as other MP157 SOMs but differs in memory size and connectivity options. It is distinct from the MP133 series, which features a single Cortex-A7 core.

Replacement Considerations

Public confirmed substitute part numbers include CC-ST-DW69-ZM for lower memory configurations or CC-WST-DW7A-NM for wireless integration. Verify pin compatibility with existing carrier designs before substitution.