25C040 MicrochipTechnology, 25C040 Datasheet - Page 7

• Manufacturer Part Number: 25C040
• Description: 4KSPIBusSerialEEPROM
• Manufacturer: MicrochipTechnology

FIGURE 3-1:
FIGURE 3-2:
FIGURE 3-3:
1997 Microchip Technology Inc.
SCK
SCK
SCK
CS
SO
SCK
CS
CS
SI
CS
SO
SI
SI
SI
0
0
0
0
0
0
7
0
0
25
1
1
0
READ SEQUENCE
1
BYTE WRITE SEQUENCE
PAGE WRITE SEQUENCE
0
26
6
0
instruction
2
2
instruction
0
2
instruction
5
27 28 29 30 31 32
0
0
3
data byte 2
3
0
3
A8
A8
4
4
4
A8
4
3
0
0
5
5
0
5
2
1
1
high impedance
6
6
1
6
0
1
0
7
7
1
7
A7 6
0
A7
8
A7
8
8
7
33
9 10 11
6
lower address byte
9 10 11 12 13 14 15 16 17 18 19 20 21 22
25AA040/25LC040/25C040
6
lower address byte
5
9 10 11 12 13 14 15 16 17 18 19 20 21 22
high impedance
6
Preliminary
34 35 36
lower address byte
5
5
4
5
data byte 3
4
4
13
3
4
3
3
3
14 15 16 17 18 19 20 21 22 23 24
37 38
2
2
2
2
1
1 A0 7
1 A0
1
39 40
0
0
7
7
6
6
6
5
7
data byte 1
5
5
4
6
data byte
data byte n (16 max)
don’t care
data out
4
4
3
5
3
4
2
3
2
3
1
2
1
2
0
DS21204A-page 7
1
23
0
1
23
0
0
twc