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MCF51AC256 ColdFire Integrated Microcontroller Reference Manual

Reference manual for NXP MCF51AC256 and MCF51AC128 series V1 ColdFire microcontrollers, covering architecture, memory maps, pinouts, and peripheral operation.

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Overview

This reference manual provides comprehensive technical details for the MCF51AC256 and MCF51AC128 series of V1 ColdFire integrated microcontrollers. It describes the core architecture, including user and supervisor programming models, memory organization for Flash and RAM, and system clock distribution via the Multi-Purpose Clock Generator (MCG). The document outlines hardware configurations for 80-pin LQFP, 64-pin LQFP/QFP, and 44-pin LQFP packages. Additionally, it details operational modes including Run, Wait, and multiple low-power Stop modes, alongside functional descriptions for resets, interrupts, and ColdFire Rapid GPIO.

Use Cases

  • Embedded system development using ColdFire V1 architecture
  • Hardware design and pin mapping for MCF51AC series microcontrollers
  • Firmware implementation for power management and interrupt handling
  • Configuring Flash memory and clock distribution in industrial or consumer electronics

Topics

MCF51AC256
MCF51AC128
ColdFire V1
Microcontroller
NXP
Reference Manual
Flash Memory
Multi-Purpose Clock Generator
GPIO
Low Power Modes

Referenced Parts

MCF51AC128A

NXP

Devices Supported: MCF51AC128A

MCF51AC128C

NXP

Devices Supported: MCF51AC128C

MCF51AC256A

NXP

Devices Supported: MCF51AC256A

MCF51AC256B

NXP

Devices Supported: MCF51AC256B

MCF51AC256 ColdFire Integrated Microcontroller Reference Manual | Design Resources