Chapter 21 64 KB Flash Module (S12ZFTMRZ64K2KV2)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
725
Upon clearing CCIF to launch the Read Once command, a Read Once phrase is fetched and stored in the
FCCOB indexed register. The CCIF flag will set after the Read Once operation has completed. Valid
phrase index values for the Read Once command range from 0x0000 to 0x0007. During execution of the
Read Once command, any attempt to read addresses within P-Flash block will return invalid data.
8
21.4.7.5
Program P-Flash Command
The Program P-Flash operation will program a previously erased phrase in the P-Flash memory using an
embedded algorithm.
CAUTION
A P-Flash phrase must be in the erased state before being programmed.
Cumulative programming of bits within a Flash phrase is not allowed.
FCCOB3
Read Once word 1 value
FCCOB4
Read Once word 2 value
FCCOB5
Read Once word 3 value
Table 21-40. Read Once Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see
)
Set if an invalid phrase index is supplied
FPVIOL
None
MGSTAT1
Set if any errors have been encountered during the read
MGSTAT0
Set if any non-correctable errors have been encountered during the read
Table 21-41. Program P-Flash Command FCCOB Requirements
Register
FCCOB Parameters
FCCOB0
0x06
Global address [23:16] to
identify P-Flash block
FCCOB1
Global address [15:0] of phrase location to be programmed
(1)
1. Global address [2:0] must be 000
FCCOB2
Word 0 program value
FCCOB3
Word 1 program value
FCCOB4
Word 2 program value
FCCOB5
Word 3 program value
Table 21-39. Read Once Command FCCOB Requirements
Register
FCCOB Parameters
Содержание MC9S12ZVHL32
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