MC68HC912D60A MOTOROLA [Motorola, Inc], MC68HC912D60A Datasheet - Page 72

• Manufacturer Part Number: MC68HC912D60A
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Operating Modes and Resource Mapping
5.3.1 Normal Operating Modes
Technical Data
72
BKGD
1
1
1
1
0
0
0
0
The states of the BKGD, MODB, and MODA pins are latched into these
bits on the rising edge of the reset signal.
There are two basic types of operating modes:
For operation above 105°C, the MC68HC912D60A (M temperature
range product only) is limited to single chip modes of operation.
A system development and debug feature, background debug mode
(BDM), is available in all modes. In special single-chip mode, BDM is
active immediately after reset.
These modes provide three operating configurations. Background
debugging is available in all three modes, but must first be enabled for
some operations by means of a BDM background command, then
activated.
Freescale Semiconductor, Inc.
MODB
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0
0
1
1
0
0
1
1
Operating Modes and Resource Mapping
Normal modes — some registers and bits are protected
against accidental changes.
Special modes — allow greater access to protected control
registers and bits for special purposes such as testing and
emulation.
MODA
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0
1
0
1
0
1
0
1
Table 5-1. Mode Selection
Normal Expanded Narrow
Special Expanded Narrow
Special Expanded Wide
Normal Expanded Wide
Reserved (Forced to
Normal Single Chip
Special Single Chip
Special Peripheral
Peripheral)
Mode
ADDR/DATA
ADDR/DATA
ADDR/DATA
ADDR/DATA
ADDR/DATA
MC68HC912D60A — Rev 3.0
G.P. I/O
G.P. I/O
Port A
—
ADDR/DATA
ADDR/DATA
ADDR/DATA
MOTOROLA
G.P. I/O
G.P. I/O
Port B
ADDR
ADDR
—