AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 109
![no-image](/images/no-image-200.jpg)
AT91SAM7S32-AI
Manufacturer Part Number
AT91SAM7S32-AI
Description
AT91 ARM Thumb-based Microcontrollers
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT91SAM7S32-AI.pdf
(446 pages)
- Current page: 109 of 446
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Flash Full Erase
Command
6071A–ATARM–28-Oct-04
Table 25. Write Command (Continued)
The Flash command Write Page and Lock (WPL) is equivalent to the Flash Write Command.
However, the lock bit is automatically set at the end of the Flash write operation. As a lock
region is composed of several pages, the programmer writes to the first pages of the lock
region using Flash write commands and writes to the last page of the lock region using a Flash
write and lock command.
The Flash command Erase Page and Write (EWP) is equivalent to the Flash Write Com-
mand. However, before programming the load buffer, the page is erased.
The Flash command Erase Page and Write the Lock (EWPL) combines EWP and WPL
commands.
This command is used to erase the Flash memory planes.
All lock regions must be unlocked before the Full Erase command by using the CLB com-
mand. Otherwise, the erase command is aborted and no page is erased.
Table 26. Full Erase Command
Step
5
6
7
...
n
n+1
n+2
n+3
n+4
n+5
...
Step
1
2
Handshake Sequence
Write handshaking
Write handshaking
Write handshaking
...
Write handshaking
Write handshaking
Write handshaking
Write handshaking
Write handshaking
Write handshaking
...
Handshake Sequence
Write handshaking
Write handshaking
MODE[3:0]
ADDR3
DATA
DATA
...
ADDR0
ADDR1
ADDR2
ADDR3
DATA
DATA
...
AT91SAM7S32 Preliminary
MODE[3:0]
CMDE
DATA
DATA[7:0]
32-bit Flash Address Last Byte
*Memory Address++
*Memory Address++
...
32-bit Memory Address First byte
32-bit Flash Address
32-bit Flash Address
32-bit Flash Address Last Byte
*Memory Address++
*Memory Address++
...
DATA[7:0]
EA
0
109
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