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by MC68HC11A8TS/D

© MOTOROLA INC., 1991, 1996

This document contains information on a new product. Specifications and information herein are subject to change without notice.

MOTOROLA

SEMICONDUCTOR

TECHNICAL DATA

MC68HC11A8

MC68HC11A1

MC68HC11A0

Technical Summary

8-Bit Microcontrollers

1 Introduction

The MC68HC11A8, MC68HC11A1, and MC68HC11A0 high-performance microcontroller units (MCUs)

are based on the M68HC11 Family. These high speed, low power consumption chips have multiplexed

buses and a fully static design. The chips can operate at frequencies from 3 MHz to dc. The three MCUs

are created from the same masks; the only differences are the value stored in the CONFIG register, and

whether or not the ROM or EEPROM is tested and guaranteed.

For detailed information about specific characteristics of these MCUs, refer to the

M68HC11 Reference

Manual (M68HC11RM/AD).

1.1 Features

• M68HC11 CPU

• Power Saving STOP and WAIT Modes

• 8 Kbytes ROM

• 512 Bytes of On-Chip EEPROM

• 256 Bytes of On-Chip RAM (All Saved During Standby)

• 16-Bit Timer System

— 3 Input Capture Channels

— 5 Output Compare Channels

• 8-Bit Pulse Accumulator

• Real-Time Interrupt Circuit

• Computer Operating Properly (COP) Watchdog System

• Synchronous Serial Peripheral Interface (SPI)

• Asynchronous Nonreturn to Zero (NRZ) Serial Communications Interface (SCI)

• 8-Channel, 8-Bit Analog-to-Digital (A/D) Converter

• 38 General-Purpose Input/Output (I/O) Pins

— 15 Bidirectional I/O Pins

— 11 Input-Only Pins and 12 Output-Only Pins (Eight Output-Only Pins in 48-Pin Package)

• Available in 48-Pin Dual In-Line Package (DIP) or 52-Pin Plastic Leaded Chip Carrier (PLCC)