MC68HC912D60A Datasheet, PDF (71/460 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Technical Data — MC68HC912D60A
Section 5. Operating Modes and Resource Mapping
5.1 Contents
5.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.3 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.4 Background Debug Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
5.5 Internal Resource Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . .77
5.6 Memory Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
5.2 Introduction
Eight possible operating modes determine the operating configuration of
the MC68HC912D60A. Each mode has an associated default memory
map and external bus configuration. After reset, most system resources
can be mapped to other addresses by writing to the appropriate control
registers.
5.3 Operating Modes
The operating mode out of reset is determined by the states of the
BKGD, MODB, and MODA pins during reset.
The SMODN, MODB, and MODA bits in the MODE register show current
operating mode and provide limited mode switching during operation.
MC68HC912D60A — Rev 3.0
MOTOROLA
Operating Modes and Resource Mapping
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Technical Data
71