Chapter 1
General Description
1.1 Introduction
The MC68HC908AZ32A is a member of the low-cost, high-performance M68HC08 Family of 8-bit
microcontroller units (MCUs). 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.
1.2 Features
Features of the MC68HC908AZ32A include:
• High-Performance M68HC08 Architecture
• Fully Upward-Compatible Object Code with M6805, M146805, and M68HC05 Families
• 8.4 MHz Internal Bus Frequency
• 32,256 bytes of FLASH Electrically Erasable Read-Only Memory (FLASH)
• FLASH Data Security
• 512 bytes of On-Chip Electrically Erasable Programmable Read-Only Memory with Security Option
(EEPROM)
• 1K byte of On-Chip 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)
• 16-Bit, 2-Channel Timer Interface Module (TIMB)
• Programmable Interrupt Timer (PIT)
• 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
• 5-Bit Keyboard Interrupt Module
• MSCAN Controller (Scalable CAN) implements CAN 2.0b Protocol as Defined in BOSCH
Specification September 1991
MC68HC908AZ32A Data Sheet, Rev. 2
Freescale Semiconductor
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FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
