25lc040a Microchip Technology Inc., 25lc040a Datasheet - Page 8

• Manufacturer Part Number: 25lc040a
• Description: 4k Spi Bus Serial Eeprom
• Manufacturer: Microchip Technology Inc.

25AA040A/25LC040A
FIGURE 2-2:
FIGURE 2-3:
DS21827E-page 8
SCK
SCK
CS
CS
SI
SI
SCK
SO
CS
SI
0
0
Instruction+Address MSb
0
0
24
Instruction+Address MSb
7
1
0
1
0
25
0
6
2
0
BYTE WRITE SEQUENCE
PAGE WRITE SEQUENCE
2
5
26 27 28 29 30 31
3
0
Data Byte 2
3
0
A
4
4
8
A
4
3
5
0
8
5
0
1
2
6
1
6
0
1
7
0
7
A
8
0
7
A
8
Lower Address Byte
7
A
32
7
9 10 11
High-impedance
6
Lower Address Byte
A
9 10 11
A
33 34 35
6
6
5
A
A
5
Data Byte 3
5
4
A
A
12 13 14 15 16 17 18 19 20 21 22 23
4
4
3
A
12 13 14 15 16 17 18 19 20 21 22 23
A
36 37
3
3
2
A
A
2
2
1
A
A
38 39
1
1
0
A
0
0
7
7
6
6
7
5
Data Byte 1
Data Byte n (16 max.)
5
Data Byte
6
4
© 2007 Microchip Technology Inc.
4
5
3
3
4
2
2
3
1
1
2
0
0
1
Twc
0