| Part Number | MM912F634CV1AE | MM912F634BV1AE | 
|---|---|---|
| Manufacturer | Freescale Semiconductor | NXP USA Inc. | 
| Category | Embedded - Microcontrollers - Application Specific | Embedded - Microcontrollers - Application Specific | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Applications | Automotive | Automotive | 
| Core Processor | S12 | S12 | 
| Program Memory Type | FLASH (32kB) | FLASH (32kB) | 
| Controller Series | HCS12 | HCS12 | 
| RAM Size | 2K x 8 | 2K x 8 | 
| Interface | LIN, SCI | LIN, SCI | 
| Number of I/O | 9 | 9 | 
| Voltage - Supply | 2.25V ~ 5.5V | 2.25V ~ 5.5V | 
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 48-LQFP Exposed Pad | 48-LQFP Exposed Pad | 
| Supplier Device Package | 48-LQFP (7x7) | 48-HLQFP (7x7) |