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Introduction

The MC68HC11F1 is a high-performance member of the M68HC11 family of microcontroller units (MCUs). High-speed expanded systems required the development of this chip with its extra input/output (I/O) ports, an increase in static RAM (one Kbyte), internal chip-select functions, and a non-multiplexed bus which reduces the need for external interface logic. The timer, serial I/O, and analog-to-digital (A/ D) converter enable functions similar to those found in the MC68HC11E9.

Features

? MC68HC11 CPU

? 512 Bytes of On-Chip Electrically Erasable Programmable ROM

(EEPROM) with Block Protect (MC68HC11F1 only)

? 1024 Bytes of On-Chip RAM (All Saved During Standby)

? Enhanced 16-Bit Timer System

— 3 Input Capture (IC) Functions

— 4 Output Compare (OC) Functions

— 4th IC or 5th OC (Software Selectable)

? On-Board Chip-Selects with Clock Stretching

? Real-Time Interrupt Circuit

? 8-Bit Pulse Accumulator

? Synchronous Serial Peripheral Interface (SPI)

? Asynchronous Nonreturn to Zero (NRZ)

Serial Communication Interface (SCI)

? Power saving STOP and WAIT Modes

? Eight-Channel 8-Bit A/D Converter (MC68HC11F1 only)

? Computer Operating Properly (COP) Watchdog System

and Clock Monitor

? Bus Speeds of up to 6 MHz for the MC68HC11FC0

and up to 5 MHz for the MC68HC11F1

? 68-Pin PLCC (MC68HC11F1 only), 64-Pin QFP (MC68HC11FC0 only),

and 80-pin TQFP package options