MC68HC08AS20 Datasheet, PDF (28/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

1.2 Introduction
The MC68HC08AS20 is a member of the low-cost, high-performance
M68HC08 Family of 8-bit microcontroller units (MCUs). 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.
1.3 Features
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)
Advance Information
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MC68HC08AS20 —Rev. 4.1
Freescale Semiconductor