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AT25FF321A Datasheet(PDF) 13 Page - Renesas Technology Corp

Part # AT25FF321A
Description  32-Mbit, 1.65 V - 3.6 V SPI Serial Flash Memory with Multi-I/O Support
PDF  112 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

AT25FF321A Datasheet(HTML) 13 Page - Renesas Technology Corp

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DS-AT25FF321A-181 Rev. R
Page 13
2024-12-20
© 2024 Renesas Electronics
AT25FF321A Datasheet
4.2.3
Command and Data Only, No Address (1-0-1)
Figure 5 and Figure 6 show a transfer with command and data only. In this type of transfer no address is required.
The 1-0-1 transfer type for a read operation is shown in Figure 5.
Figure 5. SPI Transfer — Command and Data Only — Read Operation
The 1-0-1 transfer type for a write operation is shown in Figure 6.
Figure 6. SPI Transfer — Command and Data Only — Write Operation
SCK
CS
SI
SO
MSB
23
1
0
CCCCCCCC
67
5
410 11
9
812
21 22
17
20
19
18
15 16
13 14
23 24
COMMAND
MSB
MSB
DDDDDD
D
D
D
D
MSB
DDDDDD
D
D
DATA OUT 1
DATA OUT 1
HIGH-IMPEDANCE
Mode 3
Mode 0
SCK
CS
SI
SO
MSB
23
1
0
CCCCCCC
67
5
410 11
9
814 15
13
12
COMMAND
MSB
CDDDDDDD
D
DATA IN
HIGH-IMPEDANCE
Mode 3
Mode 0



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