General Description

Introduction

The MC68HC908AS60 is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCU). The M68HC08 Family is based on the customer-specified integrated circuit (CSIC) design strategy. All MCUs in the family use the enhanced M68HC08 central processor unit (CPU08) and are available with a variety of modules, memory sizes and types, and package types.

特性 Features

Features of the MC68HC908AS60 include:

? High-performance M68HC08 architecture

? Fully upward-compatible object code with M6805, M146805, and M68HC05 Families

? 8.4-MHz internal bus frequency

? 60 Kbytes of FLASH electrically erasable read-only memory (FLASH)

? FLASH data security(1)

? 1 Kbyte of on-chip electrically erasable programmable read-only memory (EEPROM) with security option

? 2 Kbytes of on-chip random-access memory (RAM)

? Clock generator module (CGM)

? Serial peripheral interface module (SPI)

? Serial communications interface module (SCI)

? 8-bit, 15-channel analog-to-digital converter (ADC-15)

? 16-bit, 6-channel timer interface module (TIMA-6)

? Modulo timer (TIM)

? SAE J1850 byte data link controller digital module (BDLC-D)

? System protection features:

– Computer operating properly (COP) with optional reset

– Low-voltage detection with optional reset

– Illegal opcode detection with optional reset

– Illegal address detection with optional reset

? Low-power design with stop and wait modes

? Master reset pin and power-on reset

Features of the CPU08 include:

? Enhanced HC05 programming model

? Extensive loop control functions

? 16 addressing modes (eight more than the M68HC05)

? 16-bit index register and stack pointer

? Memory-to-memory data transfers

? Fast 8 × 8 multiply instruction

? Fast 16/8 divide instruction

? Binary-coded decimal (BCD) instructions

? Optimization for controller applications

? C language support