General Description 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
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