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INTRODUCTION

The MC68HC11F1 high-performance microcontroller unit (MCU) is an enhanced derivative of the M68HC11 family of microcontrollers and includes many advanced features. This MCU, with a nonmultiplexed expanded bus, is characterized by high speed and low power consumption. The fully static design allows operation at frequencies from 4 MHz to dc.

Features

? M68HC11 Central Processing Unit (CPU)

? Power Saving STOP and WAIT Modes

? 512 Bytes Electrically Erasable Programmable Read-Only Memory (EEPROM)

? 1024 Bytes RAM, Data Retained During Standby

? Nonmultiplexed Address and Data Buses

? Enhanced 16-Bit Timer

? Three Input Capture (IC) Channels

? Four Output Compare (OC) Channels

? One Additional Channel, Selectable as Fourth IC or Fifth OC

? 8-Bit Pulse Accumulator

? Real-Time Interrupt Circuit

? Computer Operating Properly (COP) Watchdog

? Enhanced Asynchronous Nonreturn to Zero (NRZ) Serial Communications Inter face (SCI)

? Enhanced Synchronous Serial Peripheral Interface (SPI)

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

? Four Chip-Select Signal Outputs with Programmable Clock Stretching

¡ª Two I/O Chip Selects

¡ª One Program Chip Select

¡ª One General-Purpose Chip Select

? Available in 68-Pin Plastic Leaded Chip Carrier (PLCC) and 80-Pin Plastic Quad Flat Pack (QFP)