Chapter 21 64 KB Flash Module (S12ZFTMRZ64K2KV2)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
715
21.4
Functional Description
21.4.1
Modes of Operation
The FTMRZ64K2K module provides the modes of operation normal and special . The operating mode is
determined by module-level inputs and affects the FCLKDIV, FCNFG, and DFPROT registers (see
).
21.4.2
IFR Version ID Word
The version ID word is stored in the IFR at address 0x1F_C0B6. The contents of the word are defined in
.
•
VERNUM: Version number. The first version is number 0b_0001 with both 0b_0000 and 0b_1111
meaning ‘none’.
21.4.3
Flash Block Read Access
If data read from the Flash block results in a double-bit fault ECC error (meaning that data is detected to
be in error and cannot be corrected), the read data will be tagged as invalid during that access (please look
into the Reference Manual for details). Forcing the DFDF status bit by setting FDFD (see
has effect only on the DFDF status bit value and does not result in an invalid access.
011
FCCOB3
HI
Data 1 [15:8]
LO
Data 1 [7:0]
100
FCCOB4
HI
Data 2 [15:8]
LO
Data 2 [7:0]
101
FCCOB5
HI
Data 3 [15:8]
LO
Data 3 [7:0]
Table 21-28. IFR Version ID Fields
[15:4]
[3:0]
Reserved
VERNUM
Table 21-27. FCCOB - NVM Command Mode (Typical Usage)
CCOBIX[2:0]
Register
Byte
FCCOB Parameter Fields (NVM Command Mode)
