32-Bit ColdFire V1 Microcontrollers


Product Details

Select a section:

Block Diagram

ColdFire MCF51CN128 Microcontroller Block Diagram

ColdFire MCF51CN128 Microcontroller Block Diagram


  • 32-bit ColdFire® V1 central processing unit (CPU)
    • Up to 50.33 MHz ColdFire CPU from 3.6 volts to 3.0 volts, up to 40 MHz CPU from 3.0 volts to 2.1 volts, and up to 20 MHz CPU from 2.1 volts to 1.8 volts across temperature range of –40 °C to 85 °C
    • Support for up to 45 peripheral interrupt requests and seven software interrupts
  • On-chip memory
    • 128 KB flash, 24 KB RAM
    • Flash read/program/erase over full operating voltage and temperature
  • Ethernet
  • External bus
  • Power-saving modes
  • Clock source options
  • System protection
  • Development support
  • Peripherals
  • Input/output
  • This product is included in NXP®.s product longevity program, with assured supply for a minimum of 10 years after launch


Quick reference to our documentation types.

1-5 of 23 documents

Show All

Design Resources


4 hardware offerings


Engineering Services

3 engineering services

To find a complete list of our partners that support this product, please see our Partner Marketplace.


1-5 of 7 trainings

Show All