MM912J637AV1EPR2

Application Specific Microcontrollers Overview

The MM912J637AV1EPR2 is an Intelligent Battery Sensor (IBS) designed for automotive lead-acid battery monitoring. It integrates a 16-bit second-order Sigma-Delta Analog-to-Digital Converter (ADC) and a Programmable Gain Amplifier (PGA) to precisely measure battery voltage, current, and temperature. The device utilizes S12 MCU technology and features an integrated LIN 2.1 interface for communication on the vehicle bus. Key internal components include a programmable wake-up timer and an integrated temperature sensor positioned for accurate thermal readings near the battery terminal.

Application Specific Microcontrollers Feature Summary

• Integrated 16-bit second-order Sigma-Delta ADC with Programmable Gain Amplifier (PGA)
• LIN 2.1 interface for vehicle network communication
• Precise measurement of differential current via external shunt resistor
• Integrated temperature sensor for battery thermal monitoring

Application Specific Microcontrollers Applications

• Monitoring state of charge and health in 12V lead-acid automotive batteries
• Fuel economy optimization through precise battery status feedback
• Reducing component failures via real-time parameter tracking

Application Specific Microcontrollers Part Context

This component belongs to the MM912_637 series of smart battery sensors manufactured by NXP Semiconductors. The part number suffix 'AV1EP' indicates specific package and revision details, while 'R2' denotes tape and reel packaging. The device is based on the HCS12/S12 microcontroller architecture, distinguishing it from general-purpose MCUs by its specialized analog front-end for battery management.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verification of pin compatibility and software configuration requirements is necessary when considering alternative devices within the MM912 family or other IBS solutions.