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Figure 33.4-4 Configuration of the Flash Memory Write Control registers (FMWC0-FMWC5)
Address:
0003F8
: FMWC0 (reserved for "Satellite" Flash)
H
0003F9
: FMWC1 (reserved for "Main" Flash)
H
0003FA
: FMWC2 (reserved for "Main" Flash)
H
0003FB
: FMWC3 (reserved for "Main" Flash)
H
0003FC
: FMWC4 (reserved for "Main" Flash)
H
0003FD
: FMWC5 (reserved for "Main" Flash)
H
7
FMWC0
WCB7 WCB6 WCB5
R/W R/W R/W R/W R/W
15
FMWC1
WCA7 WCA6 WCA5
R/W R/W R/W R/W R/W
7
FMWC2
WC15 WC14
R/W R/W R/W R/W R/W
15
FMWC3
WC23 WC22
R/W R/W R/W R/W R/W
7
FMWC4
WC31 WC30
R/W R/W R/W R/W R/W
15
FMWC5
WC39 WC38
R/W R/W R/W R/W R/W
R/W
: Readable and writable
: Initial value
Table 33.4-5 Function of each Bit of the Flash Memory Write Control registers (FMWC0-7)
Bit name
bit 0 - bit 15
WCB0 to
WCB7,
WCA0 to
WCA7 and
WC8 to
WC39:
Write Control
bits of sector
SB0-SB7 and
SA0-SA39
6
5
4
3
2
1
WCB4
WCB3
WCB2 WCB1
R/W R/W R/W
14
13
12
11
10
9
WCA4
WCA3
WCA2 WCA1
R/W R/W R/W
6
5
4
3
2
1
WC12
WC11
WC13
WC10
WC9
R/W R/W R/W
14
13
12
11
10
9
WC21
WC20
WC19
WC18 WC17
R/W R/W R/W
6
5
4
3
2
1
WC29
WC28
WC27
WC26 WC25
R/W R/W R/W
14
13
12
11
10
9
WC37
WC36
WC35
WC34 WC33
R/W R/W R/W
• These bits control if the corresponding sector can be written and erased or not.
• After reset, these bits are reset to '0' (no programming/erasing possible).
• Writing a bit to '1' enables programming/erasing of the corresponding sector.
Setting bits to '1' however is possible only with the first write access to the
register after any reset.
• Writing a bit back to '0' disables programming/erasing again. A bit can be
written to '0' at any time.
• Bits of not available sectors can not be written and are always read as '0'.
0
Initial value
0 0 0 0 0 0 0 0
WCB0
B
8
Initial value
0 0 0 0 0 0 0 0
WCA0
B
0
Initial value
0 0 0 0 0 0 0 0
WC8
B
8
Initial value
0 0 0 0 0 0 0 0
WC16
B
0
Initial value
0 0 0 0 0 0 0 0
WC24
B
8
Initial value
0 0 0 0 0 0 0 0
WC32
B
bit 0-15
WCx
Write Control for Sector x
0
Writing to or erasing the sector x is prohibited
1
Writing to or erasing the sector x is allowed
Function
CHAPTER 33 FLASH MEMORY
857
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