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Introduction

The MC68HC705C8A, an enhanced version of the MC68HC705C8, is a member of the low-cost, high-performance M68HC05 Family of 8-bit microcontroller units (MCU). The MC68HSC705C8A, introduced in Appendix A. MC68HSC705C8A, is an enhanced, high-speed version of the MC68HC705C8A. The M68HC05 Family is based on the customer-specified integrated circuit (CSIC) design strategy. All MCUs in the family use the M68HC05 central processor unit (CPU) and are available with a variety of subsystems, memory sizes and types, and package types.

Features

Features of the MC68HC705C8A include:

? M68HC05 central processor unit (CPU)

? On-chip oscillator with crystal/ceramic resonator

? Memory-mapped input/output (I/O)

? Selectable memory configurations

? Selectable programmable and/or non-programmable computer operating properly (COP) watchdog timers

? Selectable port B external interrupt capability

? Clock monitor

? High current drive on pin C7 (PC7)

? 24 bidirectional I/O lines and 7 input-only lines

? Serial communications interface (SCI) system

? Serial peripheral interface (SPI) system

? Bootstrap capability

? Power-saving stop, wait, and data-retention modes

? Single 3.0-volt to 5.5-volt supply (2-volt data-retention mode)

? Fully static operation

? Software-programmable external interrupt sensitivity

? Bidirectional RESET pin