mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 128

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

ColdFire Flash Module (CFM)
6.3.4.8
The CFMCMD is the register to which Flash program, erase, and verify commands are written.
CFMCMD is readable and writable in all modes. Writes to bit 7 have no effect and reads return 0.
6.4
The CFM registers, subject to the restrictions previously noted, can generally be read and written (see
Section 6.3.4, “Register
behave according to the setting of the KEYACC bit in CFMCR. Program, erase, and verify operations are
6-16
Bits
Bits
1–0
6–0
CFM Operation
2
7
CFM Command Register (CFMCMD)
Address
Reset
Field
R/W
CMD[6:0]
Command
BLANK
Name
Name
0x05
0x20
0x40
0x41
0x06
—
—
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Descriptions” for details). Reads of the CFM array occur normally and writes
—
7
Figure 6-12. CFM Command Register (CFMCMD)
Table 6-12. CFMCMD User Mode Commands
Erase Verified Flag. The BLANK flag indicates that the erase verify command
(RDARY1) has checked the two interleaved Flash physical blocks and found them
to be blank. Clear BLANK by writing it to 1. Writing a 0 has no effect.
1 Flash physical blocks verify as erased.
0 If an erase verify command has been requested, and the CCIF flag is set, then
Reserved, should be cleared.
Reserved, should be cleared.
Command. Valid Flash user mode commands are shown in
command in user mode other than those listed in
flag in CFMUSTAT.
Table 6-10. CFMUSTAT Field Descriptions
Table 6-11. CFMCMD Field Descriptions
the selected Flash physical blocks are not blank.
6
PGERSVER
MASERS
RDARY1
PGERS
Name
PGM
IPSBAR + 0x1D_0024
0000_0000
R/W
Description
Description
CMD
Erase verify (all 1s)
Longword program
Page erase verify
Description
Page erase
Mass erase
Table 6-12
Table
will set the ACCERR
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0
6-12. Writing a