MB88121CPMC1-GS-ERE2

Application Specific Microcontrollers Overview

The MB88121CPMC1-GS-ERE2 is a FlexRay Application Specific Standard Product (ASSP) designed to add FlexRay connectivity to microcontrollers lacking embedded protocol cores. It features a communication controller based on the Bosch ERAY IP core, supporting FlexRay Protocol Version 2.1. The device operates with a single 3.3V or 5.0V supply and includes an internal voltage regulator for the 1.9V core. It supports data rates up to 10 Mbit/s per channel and provides configurable parallel or SPI host interfaces. The component is housed in a 64-pin plastic LQFP package.

Application Specific Microcontrollers Feature Summary

• FlexRay communication controller based on Bosch ERAY IP core compliant with Protocol Version 2.1
• Configurable parallel host interface (16-bit multiplexed/non-multiplexed) and SPI interface (up to 8 Mbit/s)
• Internal PLL generates 80 MHz clock from external inputs of 4, 5, 8, 10, 16, or 20 MHz
• 8 KByte Message RAM supporting up to 128 message buffers with variable payload lengths

Application Specific Microcontrollers Applications

• Automotive chassis control systems requiring FlexRay connectivity
• Industrial automation networks utilizing FlexRay protocols
• Microcontroller systems needing external FlexRay protocol processing

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'GS-ERE2' against official Infineon/Cypress ordering lists, as datasheets primarily reference MB88121B/C variants. Confirm moisture sensitivity handling requirements due to the Yes designation. Ensure the host processor supports the selected interface mode (parallel or SPI) via hardware mode pins.

Application Specific Microcontrollers Selection Notes

Select this variant if the application requires FlexRay Protocol Version 2.1 support. Choose between parallel or SPI interfaces based on host MCU pin availability; note that SPI is available only on B/C versions. Ensure the system power supply matches the 3.3V or 5.0V requirement for B/C types, which include the internal regulator.

Application Specific Microcontrollers Part Context

This component belongs to the MB88121 series of FlexRay ASSPs originally developed by Fujitsu Semiconductor and continued by Cypress/Infineon. The series facilitates integration of FlexRay into 8-bit, 16-bit, and 32-bit microcontrollers without embedded cores. The MB88121C specifically supports higher frequency external clocks including 16 MHz and 20 MHz.

Application Specific Microcontrollers Replacement Considerations

MB88121BPMC1-GSE2 and MB88121CPMC1-GSE2 are documented variants within the same family sharing similar functional specifications and packages.