MC9S12HY64 Datasheet, PDF (539/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

32 KByte Flash Module (S12FTMRC32K1V1)
Offset Module Base + 0x0013
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 15-25. Flash Reserved7 Register (FRSV7)
All bits in the FRSV7 register read 0 and are not writable.
15.4 Functional Description
15.4.1 Modes of Operation
The FTMRC32K1 module provides the modes of operation shown in Table 15-25. The operating mode is
determined by module-level inputs and affects the FCLKDIV, FCNFG, and DFPROT registers, Scratch
RAM writes, and the command set availability (see Table 15-27).
Table 15-25. Modes and Mode Control Inputs
Operating
Mode
Normal:
Special:
FTMRC Input
mmc_mode_ss_t2
0
1
15.4.2 IFR Version ID Word
The version ID word is stored in the IFR at address 0x0_40B6. The contents of the word are defined in
Table 15-26.
Table 15-26. IFR Version ID Fields
[15:4]
Reserved
[3:0]
VERNUM
• VERNUM: Version number. The first version is number 0b_0001 with both 0b_0000 and 0b_1111
meaning ‘none’.
15.4.3 Flash Command Operations
Flash command operations are used to modify Flash memory contents.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
539