This datasheet provides details of Freescale Semiconductor MCF51QE128. MCF51QE128 is a 32-bit ColdFire® central processing unit (CPU) with 50.33 MHz CPU frequency, 0.94 Dhrystone 2.1 MIPS per MHz performance and 30 peripheral interrupt requests and seven software interrupts. The chip also features flash read/program/erase, random access memory (RAM) and security circuitry to prevent unauthorized access to RAM and flash contents.
The MCF51QE128 series includes the MCF51QE128, MCF51QE64, and MCF51QE32 devices, all based on the 32‑bit Version 1 ColdFire® core. The CPUs run up to 50.33 MHz (3.6 V‑2.1 V) or 20 MHz at lower voltages, delivering 0.94 DMIPS/MHz. The devices offer up to 70 GPIOs, multiple peripheral modules, and extensive low‑power options.
The data sheet details pin assignments for 80‑, 64‑, and 48‑pin packages, memory sizes (128 KB flash, 8 KB RAM), ADC channels (24), and other peripherals such as TPM, SPI, I²C, and RTC. Revision history and ordering information are also included, with links to the full reference manual for deeper design guidance.
| CPU maximum frequency | 50.33 MHz |
|---|---|
| CPU performance | 0.94 DMIPS per MHz |
| Flash memory size | 131072 bytes (128 KB) |
| RAM size | 8192 bytes (8 KB) |
| Pin count (largest package) | 80 |
| GPIO pins | 70 GPIOs plus 1 input‑only and 1 output‑only pin |
| ADC channels | 24 |
The CPU can run up to 50.33 MHz when supplied between 3.6 V and 2.1 V.
The device includes 24 analog‑to‑digital converter channels.
It has 131072 bytes (128 KB) of flash memory.
The microcontroller provides 70 GPIO pins, plus one input‑only and one output‑only pin.