Features of the MC68HC08AS20 include:

? High-Performance M68HC08 Architecture

? Fully Upward-Compatible Object Code with M6805, M146805,

and M68HC05 Families

? 8.4-MHz Internal Bus Frequency

? 20,480 Bytes of Read-Only Memory (ROM)

? ROM Data Security

? 512 Bytes of On-Chip Electrically Erasable Programmable

Read-Only Memory (EEPROM)

? 640 Bytes of On-Chip RAM

? Serial Peripheral Interface Module (SPI)

? Serial Communications Interface Module (SCI)

? 16-Bit, 6-Channel Timer Interface Module (TIM)

? Clock Generator Module (CGM)

? 8-Bit, 15-Channel Analog-to-Digital Converter Module (ADC)

? 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 (Fully Static 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 HC05)

? 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