AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 266

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

15.8.2
Name:
Access Type:
Offset:
Reset Value:
• KEY: Write Protection Key
• PAGEN: Page Number
Table 15-6.
9166C–AVR-08/11
Command
No operation
Write 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
31
23
15
7
-
This field should be written with the value 0xA5 to enable the command defined by the bits of the register. If the field is written
with a different value, the write is not performed and no action is started.
This field always reads as 0.
The PAGEN field is used to address a page or fuse bit for certain operations. In order to simplify programming, the PAGEN field
is automatically updated every time the page buffer is written to. For every page buffer write, the PAGEN field is updated with the
page number of the address being written to. Hardware automatically masks writes to the PAGEN field so that only bits
representing valid page numbers can be written, all other bits in PAGEN are always 0. As an example, in a flash with 1024
pages (page 0 - page 1023), bits 15:10 will always be 0.
Flash Command Register
Semantic of PAGEN Field in Different Commands
30
22
14
6
-
FCMD
Read/Write
0x04
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.
29
21
13
5
PAGEN description
Not used
The number of the page to write
Not used
Page number whose region should be locked
Page number whose region should be unlocked
Not used
GPFUSE #
GPFUSE #
Not used
28
20
12
4
PAGEN [15:8]
PAGEN [7:0]
KEY
27
19
11
3
CMD
26
18
10
2
25
17
9
1
AT32UC3C
24
16
8
0
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