Datasheet

MC68HC912DT128A — Rev 4.0 Technical Data

MOTOROLA General Description 25

Technical Data — MC68HC912DT128A

Section 1. General Description

1.1 Contents

1.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

1.3 Devices Covered in this Document. . . . . . . . . . . . . . . . . . . . . .26

1.4 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

1.5 MC68HC912DT128A Block Diagram . . . . . . . . . . . . . . . . . . . .30

1.6 MC68HC912DG128A Block Diagram. . . . . . . . . . . . . . . . . . . .31

1.7 Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

1.2 Introduction

The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device

composed of standard on-chip peripherals including a 16-bit central

processing unit (CPU12), 128K bytes of flash EEPROM, 8K bytes of

RAM, 2K bytes of EEPROM, two asynchronous serial communications

interfaces (SCI), a serial peripheral interface (SPI), an inter-IC interface

C), an enhanced capture timer (ECT), two 8-channel, 10-bit analog-

to-digital converters (ADC), a four-channel pulse-width modulator

(PWM), and three CAN 2.0 A, B software compatible modules

(MSCAN12). System resource mapping, clock generation, interrupt

control and bus interfacing are managed by the lite integration module

(LIM). The MC68HC912DT128A 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. In addition to the I/O ports

available in each module, 16 I/O ports are available with Key-Wake-Up

capability from STOP or WAIT mode.

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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