The MCF51AC256 series are members of the ColdFire® family of 32-bit variable-length reduced instruction set (RISC) microcontroller. This document provides an overview of the MCF51AC256 series, focusing on its highly
●integrated and diverse feature set.
●The MCF51AC256 series are based on the V1 ColdFire core and operates at processor core speeds up to 50.33 MHz. As part of Freescale’s Controller Continuum®, it is an ideal upgrade for designs based on the MC9S08AC128 series of 8-bit microcontrollers.
●The MCF51AC256 features the following functional units:
●• V1 ColdFire core with background debug module
●• Up to 256 KB of flash memory
●• Up to 32 KB of static RAM (SRAM)
●• Up to two analog comparators (ACMP)
●• Analog-to-digital converter (ADC) with up to 24 channels
●• Controller-area network (CAN)
●• Cyclic redundancy check (CRC)
●• Inter-integrated circuit (IIC)
●• Keyboard interrupt (KBI)
●• Multipurpose clock generator (MCG)
●• Rapid general-purpose input/output (RGPIO)
●• Two serial communications interfaces (SCI)
●• Up to two serial peripheral interfaces (SPI)
●• Two flexible timer modules (FTM)
●• Timer pulse-width modulator (TPM)
