MM912G634DM1AER2

Application Specific Microcontrollers Overview

The MM912G634DM1AER2 is an integrated S12-based relay driver with LIN interface, combining an HCS12 microcontroller and a SMARTMOS analog control IC in a single package. It features a 16-bit S12 CPU running at a maximum bus frequency of 20 MHz, equipped with 48 kB P-FLASH, 2 kB D-FLASH, and 2 kB RAM. The device includes a LIN 2.1 physical layer interface, six high-voltage wake-up inputs (L5…L0), two protected low-side outputs for inductive loads, and two protected high-side outputs. It operates within a junction temperature range of -40°C to 125°C and is housed in a 48-pin LQFP-EP package.

Application Specific Microcontrollers Feature Summary

• Integrated HCS12 MCU with 48 kB Flash and 2 kB RAM
• LIN 2.1 Physical Layer Interface with integrated SCI
• Six High-Voltage Wake-up Inputs (L0-L5)
• Two Protected Low-Side and Two Protected High-Side Outputs

Application Specific Microcontrollers Applications

• Automotive Relay Drivers
• Body Control Modules
• Lighting Control Systems

Application Specific Microcontrollers Procurement Notes

Verify the R2 suffix indicates tape and reel packaging as specified in the ordering information table. Confirm the specific analog option A1 matches the required feature set, including battery sense and current sense modules. Ensure the LQFP-EP package variant is selected for thermal performance requirements.

Application Specific Microcontrollers Selection Notes

Select this part for applications requiring integrated relay driving capabilities with LIN communication. Compare against MM912H634 variants if higher memory capacity (64 kB Flash) is needed. Verify that the 20 MHz bus frequency meets the processing requirements for the intended automotive application logic.

Application Specific Microcontrollers Part Context

This component belongs to the MM912_634 family of integrated relay drivers. It shares the same core architecture with the MM912H634 series but offers reduced memory configurations (48 kB Flash vs 64 kB). The DM1AE designation specifies the -40°C to 125°C temperature range and Analog Option A1.

Application Specific Microcontrollers Replacement Considerations

MM912G634DM1AE is the lead-free equivalent without the tape and reel suffix. MM912H634DM1AE offers increased memory resources while maintaining similar I/O and peripheral configurations.