Datasheet

MCF51AC256 Family Configurations

MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.7

Freescale Semiconductor 3

1 MCF51AC256 Family Configurations

1.1 Device Comparison

The MCF51AC256 series is summarized in Table 1.

Table 1. MCF51AC256 Series Device Comparison

Feature

MCF51AC256A MCF51AC256B MCF51AC128A MCF51AC128C

80-pin 64-pin 80-pin 64-pin 44-pin 80-pin 64-pin 80-pin 64-pin 44-pin

Flash memory size (Kbytes) 256 128

RAM size (Kbytes) 32 32 or 16

V1 ColdFire core with BDM (background

debug module)

Ye s

ACMP1 (analog comparator) Yes

ACMP2 (analog comparator) Yes Yes No Yes No

ADC (analog-to-digital converter) channels

(12-bit)

24 20 24 20 9 24 20 24 20 9

CAN (controller area network) Yes No Yes No

COP (computer operating properly) Yes

CRC (cyclic redundancy check) Yes

RTI Ye s

DBG (debug) Ye s

IIC1 (inter-integrated circuit) Yes

IRQ (interrupt request input) Yes

INTC (interrupt controller) Yes

KBI (keyboard interrupts) Yes

LVD (low-voltage detector) Yes

MCG (multipurpose clock generator) Yes

OSC (crystal oscillator) Yes

Port I/O

69 54 69 54 36 69 54 69 54 36

RGPIO (rapid general-purpose I/O) 16 12 16 12

SCI1, SCI2 (serial communications

interfaces)

Ye s

SPI1 (serial peripheral interface) Yes

SPI2 (serial peripheral interface) Yes No Yes No Yes No Yes No

FTM1 (flexible timer module) channels 6 4 6 4

FTM2 channels 6 2 6 2 2 6 2 6 2 2