MM912H634DM1AER2

Application Specific Microcontrollers Overview

The MM912H634DM1AER2 is a 16-bit microcontroller from the NXP S12 family, integrating an HCS12 CPU with a SMARTMOS analog control IC in a single package. It features 64 kB of P-FLASH and 6 kB of RAM. The device includes a LIN 2.1 physical layer interface, two protected low-side outputs for inductive loads, and two high-side outputs. Key analog features include a current sense module, battery voltage sensing, and a Hall sensor supply output. It operates within a temperature range of -40°C to 125°C and utilizes a 48-pin LQFP-EP package.

Application Specific Microcontrollers Feature Summary

• Integrated HCS12 MCU with 64 kB Flash and 6 kB RAM
• LIN 2.1 Physical Layer Interface with integrated SCI
• Two protected low-side outputs (LS1, LS2) for relay/inductive loads
• Current sense module with selectable gain and reverse battery protection

Application Specific Microcontrollers Applications

• Automotive relay driver applications
• LIN bus node implementations
• Ignition and lighting control systems

Application Specific Microcontrollers Procurement Notes

Verify that the 'R2' suffix corresponds to tape and reel packaging as specified in the ordering information table. Confirm the 'M1' suffix indicates the -40°C to 125°C temperature grade and Analog Option A1, which includes the current sense module and second high-side output.

Application Specific Microcontrollers Selection Notes

Select this variant over the G634 series if 64 kB of program memory is required. Ensure the application requires the Analog Option A1 features, specifically the current sense module and six high-voltage wake-up inputs (L0-L5), which are not present in Option A2.

Application Specific Microcontrollers Part Context

This component belongs to the MM912_634 family, which combines an S12-based microcontroller with a SMARTMOS analog die. The D2D interface allows transparent memory mapping between the MCU and analog dies. The MM912H634 variant provides higher memory capacity compared to the MM912G634.

Application Specific Microcontrollers Replacement Considerations

For tape and reel versions of the same electrical specification, consider MM912H634DV1AE with the R2 suffix added. Verify package compatibility (LQFP-EP vs LQFP) when substituting.