General Description
Technical Data MC68HC908AB32 — Rev. 1.0
30 General Description MOTOROLA
1.2 Introduction
The MC68HC908AB32 is a member of the low-cost, high-performance
M68HC08 Family of 8-bit microcontroller units (MCUs) with embedded
EEPROM for user data storage. 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 MC68HC908AB32 include the following:
• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and
M68HC05 Families
• Memory map and pin functions compatible with MC68HC08AB32
and MC68HC08AB16
• 8-MHz internal bus frequency
• 32K-bytes user program FLASH memory with security
1
feature
• 512 bytes of on-chip EEPROM with security feature
• 1K-byte of on-chip RAM
• Clock generator module (CGM)
• Two 16-bit, 4-channel timer interface modules (TIMA and TIMB)
with selectable input capture, output compare, and PWM
capability on each channel
• Programmable interrupt timer (PIT)
• Serial peripheral interface module (SPI)
• Serial communications interface module (SCI)
• 8-channel. 8-bit analog-to-digital converter (ADC)
• Low-power design (fully static with STOP and WAIT modes)
• Master reset pin and power-on reset
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
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