S12SPIV2D datasheet(19/126 Pages) FREESCALE

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MC9S12DJ64 Device User Guide — V01.17

Section 1 Introduction

1.1 Overview

The MC9S12DJ64 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip

peripherals including a 16-bit central processing unit (HCS12 CPU), 64K bytes of Flash EEPROM, 4K

bytes of RAM, 1K bytes of EEPROM, two asynchronous serial communications interfaces (SCI), one

serial peripheral interfaces (SPI), an 8-channel IC/OC enhanced capture timer, two 8-channel, 10-bit

analog-to-digital converters (ADC), an 8-channel pulse-width modulator (PWM), a digital Byte Data Link

Controller (BDLC), 29 discrete digital I/O channels (Port A, Port B, Port K and Port E), 20 discrete digital

I/O lines with interrupt and wakeup capability, a CAN 2.0 A, B software compatible modules

(MSCAN12), and an Inter-IC Bus. The MC9S12DJ64 has full 16-bit data paths throughout. However, the

external bus can operate in an 8-bit narrow mode so single 8-bit wide memory can be interfaced for lower

cost systems. The inclusion of a PLL circuit allows power consumption and performance to be adjusted to

suit operational requirements.

1.2 Features

•

HCS12 Core

–

16-bit HCS12 CPU

i. Upward compatible with M68HC11 instruction set

ii. Interrupt stacking and programmer’s model identical to M68HC11

iii. Instruction queue

iv. Enhanced indexed addressing

–

MEBI (Multiplexed External Bus Interface)

–

MMC (Module Mapping Control)

–

INT (Interrupt control)

–

BKP (Breakpoints)

–

BDM (Background Debug Mode)

•

CRG (low current Colpitts or Pierce oscillator, PLL, reset, clocks, COP watchdog, real time

interrupt, clock monitor)

•

8-bit and 4-bit ports with interrupt functionality

–

Digital filtering

–

Programmable rising or falling edge trigger

•

Memory

–

64K Flash EEPROM

–

1K byte EEPROM

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