25lc640a Microchip Technology Inc., 25lc640a Datasheet - Page 5

• Manufacturer Part Number: 25lc640a
• Description: 64k Spi Bus Serial Eeprom
• Manufacturer: Microchip Technology Inc.

FIGURE 1-1:
FIGURE 1-2:
FIGURE 1-3:
© 2007 Microchip Technology Inc.
SCK
CS
SO
SI
SCK
HOLD
SI
SO
CS
SCK
SO
CS
SI
Mode 1,1
Mode 0,0
HOLD TIMING
SERIAL INPUT TIMING
SERIAL OUTPUT TIMING
2
n + 2
n + 2
5
MSB out
MSB in
9
6
13
10
n + 1
16
n + 1
High-Impedance
Don’t Care
n
17
7
18
n
High-Impedance
Don’t Care
25AA640A/25LC640A
14
8
16
19
LSB in
17
3
n
n
5
ISB out
11
4
15
3
n - 1
12
DS21830C-page 5
n-1
Mode 1,1
Mode 0,0