MC9S12T64 Datasheet, PDF (105/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Operating Modes
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Background Debug Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Secured Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Introduction
Eight possible operating modes determine the operating configuration of
the MC9S12T64. Each mode has an associated default memory map
and external bus configuration.
Operating Modes
The operating mode out of reset is determined by the states of the
MODC, MODB, and MODA pins during reset (refer to Table 20).
The MODC, MODB, and MODA bits in the MODE register show current
operating mode and provide limited mode switching during operation.
The states of the MODC, MODB, and MODA pins are latched into these
bits on the rising edge of the reset signal.
Operating Modes
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MC9S12T64Revision 1.1.1