Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
141
32072H–AVR32–10/2012
AT32UC3A3
12.8.3
Flash Command Register
Name: FCMD
Access Type: Read/Write
Offset: 0x04
Reset value: 0x00000000
Access Type: Read/Write
Offset: 0x04
Reset value: 0x00000000
The 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.
so will cause the FCR write to be ignored, and the PROGE bit to be set.
• CMD: Command
This field defines the flash command. Issuing any unused command will cause the Programming Error flag to be set, and the
corresponding interrupt to be requested if the PROGE bit in FCR is 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
Table 12-5.
Set of commands
Command
Value
Mnemonic
No operation
0
NOP
Write Page
1
WP
Erase Page
2
EP
Clear Page Buffer
3
CPB
Lock region containing given Page
4
LP
Unlock region containing given Page
5
UP
Erase All
6
EA
Write General-Purpose Fuse Bit
7
WGPB
Erase General-Purpose Fuse Bit
8
EGPB
Set Security Bit
9
SSB
Program GP Fuse Byte
10
PGPFB
Erase All GPFuses
11
EAGPF
Quick Page Read
12
QPR
Write User Page
13
WUP
Erase User Page
14
EUP