FS-355

Overview

The Digi ConnectCore 7U (Model FS-355) is a universal 32-bit embedded core processor module based on the NetSilicon NS7520 processor with an ARM7TDMI core. Operating at 55 MHz, it provides 16 MB of RAM and 2 MB of onboard Flash memory within a compact 48-pin DIP form factor. The module integrates a 10/100 Mbps Ethernet MAC/PHY, two configurable serial interfaces supporting UART or SPI modes, and a standard I2C software bus interface. It features 16 shared GPIO ports and an external memory bus interface for expanded component integration.

Feature Summary

• NetSilicon NS7520 processor with ARM7TDMI core running at 55 MHz
• Integrated 10/100 Mbps Ethernet MAC/PHY
• Two configurable serial interfaces (UART up to 230 Kbps or SPI Master)
• 16 MB RAM and 2 MB Flash memory

Applications

• Embedded systems requiring high-performance 32-bit processing
• Industrial applications utilizing CAN bus communication
• Devices integrating Bluetooth connectivity
• Biometric fingerprint reading systems

Procurement Notes

Verify the specific memory configuration required for the application, as the FS-355 model designation corresponds to the variant with 2 MB of Flash memory. Confirm that the 48-pin DIP form factor aligns with the target carrier board design. Ensure compatibility with the selected development platform, such as LxNETES Linux or NET+OS, prior to procurement.

Selection Notes

Select the FS-355 when 2 MB of Flash storage is sufficient for the firmware and operating system requirements. Consider the FS-352 model if 8 MB of Flash memory is necessary. Evaluate the need for the external memory bus interface if additional component integration beyond the internal resources is required for the specific design.

Part Context

The ConnectCore 7U is part of the ConnectCore embedded core processor module family. It utilizes FS Forth UNC20 product technology and serves as a core processor platform designed to offer superior software design flexibility through complete development platform support options including royalty-free development kits.

Replacement Considerations

The FS-352 is a direct alternative within the same product line offering identical processing capabilities but with 8 MB of Flash memory instead of 2 MB. No other cross-model substitutes are documented in the provided source material.