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24AA640-IST Datasheet(PDF) 7 Page - Microchip Technology

Part # 24AA640-IST
Description  64K SPI Bus Serial EEPROM
Download  12 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

24AA640-IST Datasheet(HTML) 7 Page - Microchip Technology

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25AA640/25LC640/25C640
© 1997 Microchip Technology Inc.
Preliminary
DS21223A-page 7
FIGURE 3-1:
READ SEQUENCE
FIGURE 3-2:
BYTE WRITE SEQUENCE
FIGURE 3-3:
PAGE WRITE SEQUENCE
SO
SI
SCK
CS
0
2
3
4
5
6
7
8
9
10 11
21 22 23 24 25 26 27 28 29 30 31
1
0
1
0
0
0
0
0
1
15 14 13 12
2
1
0
7
6
5
4
3
2
1
0
instruction
16 bit address
data out
high impedance
SO
SI
CS
0
0
0
0
0
0
0
1
15 14 13 12
2
1
0
7
6
5
4
3
2
1
0
instruction
16 bit address
data byte
high impedance
Twc
SI
CS
9 10 11
21 22 23 24 25 26 27 28 29 30 31
0
0
0
0
0
0
0
1
15 14 13 12
2
1
0
7
6
5
4
3
2
1
0
instruction
16 bit address
data byte 1
SCK
0
2
3
4
5
6
7
1
8
SI
CS
41 42 43
46 47
7
6
5
4
3
2
1
0
data byte n (32 max)
SCK
32
34 35 36 37 38 39
33
40
7
6
5
4
3
2
1
0
data byte 3
7
6
5
4
3
2
1
0
data byte 2
44 45


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