MCF51AC128AVPUE データシートの表示（PDF） - Freescale Semiconductor

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MCF51AC128AVPUE

MCF51AC256 ColdFire Microcontroller

Freescale Semiconductor 

MCF51AC256 Family Configurations

1.3 Features

Table 2 describes the functional units of the MCF51AC256 series.

Table 2. MCF51AC256 Series Functional Units

Functional Unit

CF1 Core (V1 ColdFire core)

BDM (background debug module)

DBG (debug)

VBUS (debug visibility bus)

SIM (system integration module)

Flash (flash memory)

RAM (random-access memory)

RGPIO (rapid general-purpose input/output)

VREG (voltage regulator)

COP (computer operating properly)

LVD (low-voltage detect)

CF1_INTC (interrupt controller)

ADC (analog-to-digital converter)

FTM1, FTM2 (flexible timer/pulse-width

modulators)

TPM3 (timer/pulse-width modulator)

CRC (cyclic redundancy check)

ACMP1, ACMP2 (analog comparators)

IIC (inter-integrated circuit)

KBI (keyboard interrupt)

MCG (multipurpose clock generator)

OSC (crystal oscillator)

CAN (controller area network)

SCI1, SCI2 (serial communications interfaces)

SPI1 (8-bit serial peripheral interfaces)

SPI2 (16-bit serial peripheral interfaces)

Function

Executes programs and interrupt handlers

Provides single pin debugging interface (part of the V1 ColdFire core)

Provides debugging and emulation capabilities (part of the V1 ColdFire

core)

Allows for real-time program traces (part of the V1 ColdFire core)

Controls resets and chip level interfaces between modules

Provides storage for program code, constants and variables

Provides storage for program variables

Allows for I/O port access at CPU clock speeds

Controls power management across the device

Monitors a countdown timer and generates a reset if the timer is not

regularly reset by the software

Monitors internal and external supply voltage levels, and generates a reset

or interrupt when the voltages are too low

Controls and prioritizes all device interrupts

Measures analog voltages at up to 12 bits of resolution

Provides a variety of timing-based features

Provides a variety of timing-based features

Accelerates computation of CRC values for ranges of memory

Compares two analog inputs

Supports standard IIC communications protocol

Provides pin interrupt capabilities

Provides clocking options for the device, including a phase-locked loop

(PLL) and frequency-locked loop (FLL) for multiplying slower reference

clock sources

Allows a crystal or ceramic resonator to be used as the system clock source

or reference clock for the PLL or FLL

Supports standard CAN communications protocol

Serial communications UARTs capable of supporting RS-232 and LIN

protocols

Provides 8-bit 4-pin synchronous serial interface

Provides 16-bit 4-pin synchronous serial interface with FIFO

MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.4

Freescale Semiconductor

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