AT32UC3B0512_1 Datasheet, PDF (131/676 Pages) ATMEL Corporation – 32-bit AVR® Microcontroller

AT32UC3B
14.8.2 Flash Command Register
Name:
Access Type:
Offset:
Reset value:
FCMD
Read/Write
0x04
0x00000000
FCMD can not be written if the flash is in the process of performing a flash command. Doing so
will cause the FCR write to be ignored, and the PROGE bit to be set.
31
30
29
28
27
26
25
24
KEY
23
22
21
20
19
18
17
16
PAGEN [15:8]
15
14
13
12
11
10
9
8
PAGEN [7:0]
7
6
5
4
3
2
1
0
-
-
CMD
• CMD: Command
This field defines the flash command. Issuing any unused command will cause the Programming Error bit to be set, and the
corresponding interrupt to be requested if FCR.PROGE is set.
Table 14-5. Set of commands
Command
No operation
Write Page
Erase Page
Clear Page Buffer
Lock region containing given Page
Unlock region containing given Page
Erase All
Write General-Purpose Fuse Bit
Erase General-Purpose Fuse Bit
Set Security Bit
Program GP Fuse Byte
Erase All GPFuses
Quick Page Read
Value
0
1
2
3
4
5
6
7
8
9
10
11
12
Mnemonic
NOP
WP
EP
CPB
LP
UP
EA
WGPB
EGPB
SSB
PGPFB
EAGPF
QPR
32059I–06/2010
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