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MM912J637AM2EP is listed in the Application Specific Microcontrollers range at ChipApex. The manufacturer field lists NXP USA Inc.. Its product description is BATTERY SENSOR, LIN, 128KB FLASH. Review the specifications below when checking this part for your BOM.
Application Specific Microcontrollers specifications for MM912J637AM2EP
- Description：BATTERY SENSOR, LIN, 128KB FLASH
- Series：*
- Mfr：NXP USA Inc.
- Package：Bulk
- Applications：-
- Core Processor：-
- Program Memory Type：-
- Controller Series：-
- RAM Size：-
- Interface：-
- Number of I/O：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
Application Specific Microcontrollers datasheet and documents for MM912J637AM2EP
Application Specific Microcontrollers Overview
The MM912J637AM2EP is a fully integrated LIN battery monitoring device based on NXP SMARTMOS and S12 MCU technology. It features an S12 microcontroller with 128 kByte flash, 6.0 kByte RAM, and 4.0 kByte data flash. The device supports precise current measurement via an external shunt resistor, battery voltage measurement via a series resistor at the battery plus pole, and on-chip temperature sensing. It includes a programmable low-noise gain amplifier (PGA) with automatic gain control, signal low-pass filtering, and an accurate internal oscillator. Communication is handled via an integrated LIN 2.1 interface.
Application Specific Microcontrollers Feature Summary
- S12 microcontroller with 128 kB flash, 6.0 kB RAM, and 4.0 kB data flash
- Precision battery voltage, current (up to 8 ranges), and temperature measurement
- Integrated LIN 2.1 bus interface for sensor feedback
- Programmable low-noise gain amplifier (PGA) with automatic gain control
Application Specific Microcontrollers Applications
- 12 V Lead-acid battery monitoring
- Battery State of Charge (SoC) monitoring
- Battery State of Health (SoH) monitoring
Application Specific Microcontrollers Procurement Notes
Verify the analog option configuration before procurement. The AM2EP suffix corresponds to Analog Option 1, which lacks cranking mode characterization and external wake-up/temperature/voltage sense options compared to Option 2. Confirm package type SOT619-16 (48-pin QFN) matches design requirements.
Application Specific Microcontrollers Selection Notes
Select this part for applications requiring high-precision battery monitoring with LIN communication. Ensure the application circuit includes the recommended external components such as the reverse battery protection diode, shunt resistor, and decoupling capacitors. Verify that the lack of external wake-up and optional voltage sense inputs in Analog Option 1 meets system needs.
Application Specific Microcontrollers Part Context
This component belongs to the MM912_637 family, which also includes the MM912I637 variant with 96 kB flash. Both variants share similar architectures but differ in memory size. The AM2EP designation indicates a specific silicon revision and analog option set within this product line.
Application Specific Microcontrollers Replacement Considerations
The MM912J637TV1EP is a pin-compatible alternative with a different temperature range (-40 °C to 105 °C) and Analog Option 1. Note that the AM2EP package is not recommended for new designs; consider the TV1EP or TM2EP packages for future projects.
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