24AA640-EP データシートの表示（PDF） - Microchip Technology
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24AA640-EP Datasheet PDF : 12 Pages
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25AA640/25LC640/25C640
FIGURE 3-1: READ SEQUENCE
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25 26 27 28 29 30 31
instruction
16 bit address
0 0 0 0 0 0 1 1 15 14 13 12
210
high impedance
data out
76543210
FIGURE 3-2: BYTE WRITE SEQUENCE
CS
Twc
instruction
16 bit address
data byte
SI
0 0 0 0 0 0 1 0 15 14 13 12
2 1 07 6 5 4 3 2 1 0
high impedance
SO
FIGURE 3-3: PAGE WRITE SEQUENCE
CS
SCK
SI
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25 26 27 28 29 30 31
instruction
16 bit address
data byte 1
0 0 0 0 0 0 1 0 15 14 13 12
2 1 07 6 5 4 3 2 1 0
CS
SCK
SI
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
data byte 2
data byte 3
7654321076543210
data byte n (32 max)
76543210
© 1997 Microchip Technology Inc.
Preliminary
DS21223A-page 7
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