mc9s08gt16a Freescale Semiconductor, Inc, mc9s08gt16a Datasheet - Page 60

• Manufacturer Part Number: mc9s08gt16a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Memory
4.6.6
Only five command codes are recognized in normal user modes as shown in
Section 4.4.3, “Program and Erase Command
programming and erase operations.
60
FACCERR
FCMD[7:0]
FBLANK
FPVIOL
Reset
Field
Field
7:0
5
4
2
W
R
FCMD7
FLASH Command Register (FCMD)
Protection Violation Flag — FPVIOL is set automatically when FCBEF is cleared to register a command 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.
Access Error Flag — FACCERR is set automatically when the proper command sequence is not followed
exactly (the erroneous command is ignored), if a program or erase operation is attempted before the FCDIV
register has been initialized, or if the MCU enters stop while a command was in progress. For a more detailed
discussion of the exact actions that are considered access errors, see
is cleared by writing a 1 to FACCERR. Writing a 0 to FACCERR has no meaning or effect.
0 No access error has occurred.
1 An access error has occurred.
FLASH Verified as All Blank (Erased) Flag — FBLANK is set automatically at the conclusion of a blank check
command if the entire FLASH array was verified to be erased. FBLANK is cleared by clearing FCBEF to write a
new valid command. Writing to FBLANK has no meaning or effect.
0 After a blank check command is completed and FCCF = 1, FBLANK = 0 indicates the FLASH array is not
1 After a blank check command is completed and FCCF = 1, FBLANK = 1 indicates the FLASH array is
FLASH Command Bits -- See
0
0
7
completely erased.
completely erased (all 0xFF).
FCMD6
0
0
6
Table 4-11. FSTAT Field Descriptions (continued)
Figure 4-10. FLASH Command Register (FCMD)
Table 4-12. FCMD Field Descriptions
MC9S08GT16A/GT8A Data Sheet, Rev. 1
FCMD5
0
0
5
Table 4-13
Execution”
FCMD4
for a description of FCMD[7:0].
0
0
4
Description
Description
for a detailed discussion of FLASH
FCMD3
3
0
0
Section 4.4.5, “Access
FCMD2
0
0
2
Table
4-13. Refer to
Freescale Semiconductor
FCMD1
0
0
1
Errors.” FACCERR
FCMD0
0
0
0