mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 91

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

2.3.2.3
All bits read 0 and are not writable in normal mode. The WRALL bit is writable only in special mode to
simplify mass erase and erase verify operations. When writing to the FTSTMOD register in special mode,
all unimplemented/reserved bits must be written to 0.
Freescale Semiconductor
The unbanked FTSTMOD register is used to control Flash test features.
WRALL
Reset
Field
4
W
R
Write to All Register Banks — If the WRALL bit is set, all banked registers sharing the same register address
will be written simultaneously during a register write.
0 Write only to the bank selected via BKSEL.
1 Write to all register banks.
Flash Test Mode Register (FTSTMOD)
7
0
0
= Unimplemented or Reserved
6
0
0
Figure 2-6. Flash Test Mode Register (FTSTMOD)
Table 2-8. FTSTMOD Field Descriptions
MC9S12E256 Data Sheet, Rev. 1.08
5
0
0
WRALL
4
0
Description
3
0
0
Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
2
0
0
1
0
0
0
0
0
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