MC908GR32AVFAE Datasheet, PDF (19/314 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 1
General Description
1.1 Introduction
The MC68HC908GR60A, MC68HC908GR48A, and MC68HC908GR32A are members 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.
The information contained in this document pertains to all three devices with the exceptions noted in
Appendix A MC68HC908GR48A and Appendix B MC68HC908GR32A.
1.2 Features
For convenience, features have been organized to reflect:
• Standard features
• Features of the CPU08
1.2.1 Standard Features
Features of the MC68HC908GR60A include:
• High-performance M68HC08 architecture optimized for C-compilers
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• 8-MHz internal bus frequency
• Clock generation module supporting 1-MHz to 8-MHz crystals
• FLASH program memory security⁽¹⁾
• On-chip programming firmware for use with host personal computer which does not require high
voltage for entry
• In-system programming (ISP)
• System protection features:
– Optional computer operating properly (COP) reset
– Low-voltage detection with optional reset and selectable trip points for 3.3-V and 5.0-V
operation
– Illegal opcode detection with reset
– Illegal address detection with reset
• Low-power design; fully static with stop and wait modes
• Standard low-power modes of operation:
– Wait mode
– Stop mode
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for
unauthorized users.
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
Freescale Semiconductor
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