General Description

Introduction

The MC68HC05C9E HCMOS (high-density complementary metal-oxide semiconductor) microcontroller is a member of the M68HC05 Family. The MC68HC05C9E memory map consists of 15,936 bytes of user ROM and 352 bytes of RAM. The MC68HC05C9E includes a serial communications interface, a serial peripheral interface, and a 16-bit capture/compare timer.

Features

Features of the MC68HC05C9E include:

• M68HC05 CPU

• Mask programmable interrupt capability on port B

• Software programmable external interrupt sensitivity

• 15,936 bytes of read-only memory (ROM)

• 352 bytes of random-access memory (RAM)

• Memory mapped input/output (I/O)

• 31 bidirectional I/O lines with high current sink and source on PC7

• Asynchronous serial communications interface (SCI)

• Synchronous serial peripheral interface (SPI)

• 16-Bit capture/compare timer

• Computer operating properly (COP) watchdog timer and clock monitor

• Power-saving wait and stop modes

• On-chip crystal oscillator connections

• Single 4.5 volts to 5.5 volts power supply requirement

• ROM contents security(1) feature

• Available packages:

– 40-pin dual in-line (DIP)

– 44-pin quad flat pack (QFP)