M68HC08 datasheet(13/124 Pages) FREESCALE

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MC68HC05C9A Advance Information Data Sheet, Rev. 5.1

Freescale Semiconductor

Chapter 1

General Description

1.1 Introduction

The MC68HC05C9A HCMOS (high-density complementary metal-oxide semiconductor) microcontroller

is a member of the M68HC05 Family. The MC68HC05C9A memory map consists of 15,936 bytes of user

ROM and 352 bytes of RAM. The MC68HC05C9A includes a serial communications interface, a serial

peripheral interface, and a 16-bit capture/compare timer.

1.2 Features

Features of the MC68HC05C9A 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 3.0 volts to 5.5 volts power supply requirement

•

ROM contents security(1) feature

•

Available packages:

–

40-pin dual in-line (DIP)

–

44-pin plastic leaded chip carrier (PLCC)

–

44-pin quad flat pack (QFP)

–

42-pin plastic shrink dual in-line (SDIP) packages

1.3 Mask Options

Eight mask options are available to select external interrupt capability (including an internal pullup device)

on each of the port B pins.

1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the ROM difficult for

unauthorized users.

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