mc9s08sg4 Freescale Semiconductor, Inc, mc9s08sg4 Datasheet - Page 57
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mc9s08sg4
Manufacturer Part Number
mc9s08sg4
Description
8-bit Microcontroller Family
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S08SG4.pdf
(320 pages)
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4.7.5
Freescale Semiconductor
Reset
FPVIOL
FCBEF
FPDIS
FCCF
Field
Field
FPS
7:1
0
7
6
5
W
R
FCBEF
FLASH Status Register (FSTAT)
FLASH Protect Select Bits — When FPDIS = 0, this 7-bit field determines the ending address of unprotected
FLASH locations at the high address end of the FLASH. Protected FLASH locations cannot be erased or
programmed.
FLASH Protection Disable
0 FLASH block specified by FPS7:FPS1 is block protected (program and erase not allowed).
1 No FLASH block is protected.
FLASH Command Buffer Empty Flag — The FCBEF bit is used to launch commands. It also indicates that the
command buffer is empty so that a new command sequence can be executed when performing burst
programming. The FCBEF bit is cleared by writing a 1 to it or when a burst program command is transferred to
the array for programming. Only burst program commands can be buffered.
0 Command buffer is full (not ready for additional commands).
1 A new burst program command can be written to the command buffer.
FLASH Command Complete Flag — FCCF is set automatically when the command buffer is empty and no
command is being processed. FCCF is cleared automatically when a new command is started (by writing 1 to
FCBEF to register a command). Writing to FCCF has no meaning or effect.
0 Command in progress
1 All commands complete
Protection Violation Flag — FPVIOL is set automatically when a command is written that attempts to erase or
program a location in a protected block (the erroneous command is ignored). FPVIOL is cleared by writing a 1
to FPVIOL.
0 No protection violation.
1 An attempt was made to erase or program a protected location.
1
7
= Unimplemented or Reserved
FCCF
1
6
Table 4-11. FPROT Register Field Descriptions
Table 4-12. FSTAT Register Field Descriptions
Figure 4-9. FLASH Status Register (FSTAT)
MC9S08SG8 MCU Series Data Sheet, Rev. 3
FPVIOL
0
5
FACCERR
0
4
Description
Description
3
0
0
FBLANK
0
2
0
0
1
Chapter 4 Memory
0
0
0
57
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