25LC640A-I/ST Microchip Technology, 25LC640A-I/ST Datasheet - Page 5

• Manufacturer Part Number: 25LC640A-I/ST
• Description: IC EEPROM 64KBIT 10MHZ 8TSSOP
• Manufacturer: Microchip Technology

Specifications of 25LC640A-I/ST

• Memory Size: 64K (8K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 10MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Memory Configuration: 8K X 8
• Ic Interface Type: SPI
• Clock Frequency: 10MHz
• Supply Voltage Range: 2.5V To 5.5V
• Memory Case Style: TSSOP
• No. Of Pins: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 1-1:
FIGURE 1-2:
FIGURE 1-3:
© 2008 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
DS21830D-page 5
n-1
Mode 1,1
Mode 0,0