mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 589

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

21.3.2.9
Read: Anytime (provided this register is in the map).
Write: Each bit has specific write conditions. Please refer to the descriptions of each bit on the following
pages.
The MODE register is used to establish the operating mode and other miscellaneous functions (i.e.,
internal visibility and emulation of port E and K).
In special peripheral mode, this register is not accessible but it is reset as shown to system configuration
features. Changes to bits in the MODE register are delayed one cycle after the write.
This register is not in the on-chip memory map in expanded and special peripheral modes. Therefore, these
accesses will be echoed externally.
Freescale Semiconductor
Normal Expanded Wide
Emulation Expanded
Emulation Expanded
Special Single Chip
Normal Single Chip
Normal Expanded
Special Test
Peripheral
Mode Register (MODE)
Narrow
Narrow
Reset
Wide
W
R
MODC
0
0
0
0
1
1
1
1
7
= Unimplemented or Reserved
MODB
Figure 21-13. Mode Register (MODE)
0
0
1
1
0
0
1
1
MC9S12HZ256 Data Sheet, Rev. 2.05
6
MODA
0
1
0
1
0
1
0
1
5
4
0
0
0
0
0
0
0
0
0
Chapter 21 Multiplexed External Bus Interface (MEBIV3)
IVIS
0
1
1
1
0
0
0
0
3
0
0
0
0
0
0
0
0
0
2
EMK
0
1
0
1
0
0
0
0
1
EME
0
1
0
1
0
0
0
0
0
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