Technical overview and specifications for the Freescale MCF51JM128 32‑bit ColdFire USB microcontroller.
The MCF51JM128 is a 32‑bit V1 ColdFire® microcontroller featuring a USB On‑The‑Go (OTG) interface, CAN controller, 12‑channel 12‑bit ADC, and extensive peripheral options. It offers up to 128 KB flash, 16 KB SRAM, and operates from 2.7 V to 5.5 V across –40 °C to +105 °C.
The device includes security modules such as a Cryptographic Acceleration Unit (CAU) supporting DES, 3DES, AES, MD5, SHA‑1, and a Random Number Generator Accelerator (RNGA). Development is supported by CodeWarrior tools, USB‑LITE protocol stack, and BDM debugging interfaces. This manual is written in Chinese.
| CPU Core | V1 ColdFire, 32‑bit |
|---|---|
| Flash Memory | up to 128 KB |
| SRAM | up to 16 KB |
| ADC | 12 channels, 12‑bit resolution |
| SPI Interfaces | 2 SPI ports |
| Operating Frequency | up to 50.33 MHz |
| Temperature Range | -40 °C to +105 °C |
| Supply Voltage | 2.7 V to 5.5 V |
It supports USB host, device, and On‑The‑Go (OTG) configurations.
It includes a Cryptographic Acceleration Unit (CAU) with DES, 3DES, AES, MD5, SHA‑1 support and a Random Number Generator Accelerator (RNGA) that generates 32‑bit random numbers.