CY7C53120E4-40SXI

Application Specific Microcontrollers Overview

The CY7C53120E4-40SXI is a Neuron Chip network processor manufactured by Infineon Technologies, designed for LonWorks distributed intelligent control networks. It features three 8-bit pipelined processors for concurrent application and network traffic processing. The device includes 4 KB of Flash memory, 12 KB of ROM containing LonTalk protocol firmware, and 2 KB of SRAM. It supports a maximum input clock frequency of 40 MHz over an operating temperature range of –40°C to 85°C. The component is housed in a 32-pin SOIC package with a nominal 5.0 V supply voltage.

Application Specific Microcontrollers Feature Summary

• Three 8-bit pipelined processors enable concurrent execution of application code and network traffic.
• Integrated 12 KB ROM contains LonTalk network protocol firmware and 34 preprogrammed I/O drivers.
• Versatile 5-pin communication port (CP0–CP4) supports direct connect and network transceiver interfaces.
• On-chip Low Voltage Detect (LVD) circuit prevents nonvolatile memory corruption during voltage drops.

Application Specific Microcontrollers Applications

• LonWorks node implementation
• Building automation systems
• Industrial process control

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix 'SXI' corresponds to the 32-pin SOIC package configuration. Confirm that the required firmware version 13 is compatible with existing LonBuilder or NodeBuilder software environments. Ensure external oscillator stabilization times are accounted for in the reset circuit design due to the 40 MHz operation requirement.

Application Specific Microcontrollers Selection Notes

Select this part when a fixed 12 KB ROM implementation of the LonTalk protocol is required without external memory dependencies. The 40 MHz speed rating distinguishes it from the 10 MHz CY7C53120E2 variant. Consider the 32-pin SOIC package constraints regarding thermal dissipation and pin availability compared to the 44-pin TQFP option if more general-purpose I/O is needed.

Application Specific Microcontrollers Part Context

This component belongs to the CY7C53120 family of Neuron chips, which also includes the CY7C53150. Unlike the CY7C53150, which requires external memory for system firmware, the CY7C53120E4 integrates all necessary firmware in on-chip ROM. It serves as a specialized controller for deterministic real-time networking applications within the LonWorks ecosystem.

Application Specific Microcontrollers Replacement Considerations

The datasheet identifies the Motorola MC143150Bx and Toshiba TMPN3150B1 as exact replacements for the CY7C53150. No explicit replacement parts are listed for the CY7C53120E4-40SXI in the provided documentation.