The 32-bit microcontroller unit is part of the M•CORE MMC20xx family and uses the M200 core architecture. It includes an OnCE debug port implemented as a JTAG-like serial interface for command-controller access and embedded debug control. The device documentation identifies SPI module behavior, SPI_EN control conditions, instruction-set errata, debug-mode errata, and mask-set applicability for 1J56W, 3J56W, and 0K22K devices.
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| Processor width | 32bit |
| Core family | M•CORE M200 |
| Microcontroller family | MMC20xx |
| Debug interface | OnCE JTAG-like serial port |
| JTAG instruction register width | 8bit |
| OnCE command register width | 8bit |
| Peripheral noted in errata | SPI module with SPI_EN pin |
| Applicable mask sets | 1J56W, 3J56W, 0K22K |
These are design resources that include the Motorola MMC2003
Software UART implementation for Motorola MMC2001 microcontrollers using PWM timers and the M•CORE API for half-duplex serial communication up to 19,200 baud.
