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Introduction

The MC68HC11C0 high-performance microcontroller unit (MCU) is an enhanced member of the M68HC11 family of microcontrollers. Excluding its new features, the MC68HC11C0 is very similar to the MC68HC11E9 MCU. This device incorporates highly sophisticated on-chip peripheral functions and, with a multiplexed expanded bus, is characterized by high speed and low power consumption. Its fully static design allows this device to operate at frequencies from 3 MHz to dc.

Features

? M68HC11 CPU

? 256 Bytes of On-Chip Static RAM

? 1024 Bytes of Bootstrap ROM (Available in Single-Chip, Bootstrap, and Special-Test Modes)

? Power Saving STOP and WAIT Modes

? 64 Kbyte Address Space, Expandable to 256 Kbytes Using On-Chip Memory Mapping Logic

? Multiplexed Address/Data Bus

? 16-Bit Timer System

— Three Input Capture (IC) Channels

— Four Output Compare (OC) Channels

— One Additional Channel, Software Selectable as Fourth IC or Fifth OC

? 8-Bit Pulse Accumulator

? Real-Time Interrupt Circuit

? Computer Operating Properly (COP) Watchdog Timer

? Clock Monitor

? Five External General-Purpose Chip Select Signals, Each with Programmable Clock Stretching

? One External Vector/Program Chip Select with Programmable Clock Stretching

? Nine External Interrupt Request Inputs (One Nonmaskable Interrupt)

? Two 8-Bit Pulse-Width Modulation (PWM) Timer Channels (Concatenate for a Single 16-Bit PWM)

? Four-Channel 8-Bit Analog-to-Digital (A/D) Converter

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

? Synchronous Serial Peripheral Interface (SPI)

? Six Input/Output (I/O) Ports (35 Pins)

— 31 Bidirectional

— 4 Input Only

? All Bidirectional Port Pins Have Selectable Internal Pull-Up Devices

? Available in 68-Pin Plastic Leaded Chip Carrier (PLCC) and 64-Pin Quad Flat Pack (QFP)