FS-352

Overview

The Digi FS-352 is a ConnectCore 7U embedded core processor module based on the NetSilicon NS7520 processor. It features a 32-bit NET+ARM architecture with an ARM7TDMI core operating at 55 MHz. The module includes 16 MB of onboard RAM and 8 MB of Flash memory. Connectivity options include an integrated 10/100 Mbps Ethernet MAC/PHY, two configurable serial interfaces (UART or SPI Master), and a standard mode I²C software bus interface. Additional hardware resources consist of 16 shared GPIO ports, an external memory bus interface, two independent 27-bit timers, and an on-board JTAG interface for debugging.

Feature Summary

• NetSilicon NS7520 processor with ARM7TDMI core running at 55 MHz
• 16 MB RAM and 8 MB Flash memory capacity
• Integrated 10/100 Mbps Ethernet MAC/PHY
• Configurable UART/SPI serial interfaces and I²C bus

Applications

• Embedded industrial control systems requiring high-performance RISC processing
• Networked devices utilizing integrated Ethernet connectivity
• Applications requiring flexible development via LxNETES Linux or NET+OS platforms

Procurement Notes

Verify the specific model designation FS-352 to ensure it corresponds to the variant with 8 MB of Flash memory, as the ConnectCore 7U family also offers a 2 MB Flash option (FS-355). Confirm that the required development environment aligns with the supported royalty-free platforms, specifically LxNETES 2.3 or NET+OS 6.0, which provide the necessary toolchains and documentation for this hardware.

Selection Notes

Select the FS-352 when the application demands 8 MB of non-volatile storage in addition to the standard 16 MB RAM. This module is suitable for designs requiring a compact 48-pin DIP form factor while maintaining access to extensive peripheral interfaces such as the external memory bus and multiple serial configurations. Ensure the target operating environment supports the specified 3.3VDC power requirement and the commercial temperature range of 0°C to +70°C.

Part Context

The FS-352 is part of the ConnectCore 7U family, representing the first module in this series to utilize the NetSilicon NS7520 processor technology. It serves as a core processor platform designed to offer superior software design flexibility through complete development support. The module is manufactured by Digi International in collaboration with FS Forth-Systeme GmbH and NetSilicon, leveraging UNC20 product technology.

Replacement Considerations

The FS-355 is the direct alternative within the same form factor, differing only in having 2 MB of Flash memory instead of 8 MB. No other cross-model replacements are documented in the provided source material.