CY7C53120E2-10SXI

Application Specific Microcontrollers Overview

The Infineon Technologies CY7C53120E2-10SXI is a Neuron Chip network processor designed for LonWorks distributed intelligent control networks. It integrates three 8-bit pipelined processors, 2 KB of SRAM, and 2 KB of Flash memory with an on-chip charge pump. The device contains 10 KB of ROM storing LonTalk network protocol firmware. Operating at a maximum input clock frequency of 10 MHz over a temperature range of -40°C to +85°C, it features a versatile 5-pin communication port supporting various transceiver interfaces. The component operates on a 5.0 V supply and is housed in a 32-pin SOIC package.

Application Specific Microcontrollers Feature Summary

• Three 8-bit pipelined processors enable concurrent processing of application code and network traffic.
• Includes 10 KB of ROM containing LonTalk network protocol firmware and 2 KB of SRAM for data buffering.
• Features a programmable 11-pin I/O port configurable in 34 modes, including two 16-bit timer/counters.
• Contains a unique 48-bit ID number for network installation and management.

Application Specific Microcontrollers Applications

• LonWorks node implementation
• Distributed intelligent control networks
• Building automation systems

Application Specific Microcontrollers Procurement Notes

Verify the current lifecycle status of the CY7C53120E2-10SXI before procurement, as distribution channels may list this part as obsolete or end-of-life. Confirm that the 32-pin SOIC package availability aligns with manufacturing requirements. Ensure compatibility with existing design tools, noting that specific firmware versions are required for proper operation.

Application Specific Microcontrollers Selection Notes

Select the CY7C53120E2-10SXI when a 10 MHz operating speed is sufficient for the application. This variant provides 2 KB of Flash memory and 10 KB of ROM, distinguishing it from the E4 version which offers higher speeds and larger memory capacities. Verify that the 32-pin SOIC package fits the board layout constraints compared to the available TQFP options.

Application Specific Microcontrollers Part Context

This component belongs to the CY7C53120 family of Neuron chips, manufactured using 0.35 µm flash process technology. It serves as a direct replacement for the Motorola MC143120E2 device due to identical ROM firmware content. The chip consolidates communication and control functions necessary for LonWorks nodes onto a single integrated circuit.

Application Specific Microcontrollers Replacement Considerations

The CY7C53120E2-10SXI is documented as an exact replacement for the Motorola MC143120E2 device. Designers should verify pinout compatibility and ensure that the 10 MHz maximum clock frequency meets the system timing requirements previously handled by the legacy component.

Application Specific Microcontrollers FAQ

What is the function of the Low Voltage Inhibit (LVI) circuit?

The on-chip LVI circuit trips whenever the VDD input drops below 4.1 ± 0.3 V, preventing corruption of nonvolatile memory during voltage drops.

How is the 5-pin communication port configured?

The port supports Single-Ended, Special Purpose, and Differential modes, allowing interface with twisted-pair, powerline, RF, IR, fiber-optic, and coaxial transceivers.

What is the endurance rating of the on-chip Flash memory?

The Flash memory can typically be written 100,000 times without data loss, with an erase/write cycle time of 20 ms.