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AT25SL321 Datasheet(PDF) 23 Page - Renesas Technology Corp

Part # AT25SL321
Description  32-Mbit, 1.7 V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O, and QPI Support
PDF  82 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

AT25SL321 Datasheet(HTML) 23 Page - Renesas Technology Corp

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DS-AT25SL321-112 Rev. J
Page 23
Nov 1, 2022
© 2022 Renesas Electronics
AT25SL321 Datasheet
8.4
Write Disable (04h)
The Write Disable command is used to reset the Write Enable Latch (WEL) bit in the Status Register. To enter the
Write Disable command, assert CS low prior to driving the command 04h onto the SI on the rising edge of SCK,
and then driving CS high to terminate the operation. The WEL bit is automatically reset write- disable status of 0
after Power-up and upon completion of the every Program, Erase and Write Status Register commands.
Figure 6. Write Disable Command for SPI Mode (left) and QPI Mode (right)
03
5
246
7
1
Mode 3
Mode 0
Mode 3
Mode 0
High-Impedance
SCK
SCK
CS
Command (04h)
Command
(04h)
01
Mode 3
Mode 0
Mode 3
Mode 0
CS
SI
SO
IO
0
IO
1
WP
IO
2
HOLD
IO
3



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