25LC640-I/SN Microchip Technology, 25LC640-I/SN Datasheet - Page 4

• Manufacturer Part Number: 25LC640-I/SN
• Description: IC EEPROM 64KBIT 2MHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 25LC640-I/SN

• Memory Size: 64K (8K x 8)
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 2MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Organization: 8 K x 8
• Interface Type: SPI
• Maximum Clock Frequency: 2 MHz
• Access Time: 230 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Current: 5 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 2.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

25AA640/25LC640
FIGURE 1-1:
FIGURE 1-2:
FIGURE 1-3:
DS21223H-page 4
SCK
SO
CS
SI
SCK
HOLD
SO
CS
SI
SCK
SO
CS
SI
Mode 1,1
Mode 0,0
5
2
n + 2
n + 2
MSB In
MSB Out
HOLD TIMING
SERIAL INPUT TIMING
SERIAL OUTPUT TIMING
9
13
10
6
n + 1
n + 1
High-Impedance
16
Don’t Care
n
17
18
7
n
High-Impedance
Don’t Care
14
8
16
19
3
LSB In
17
5
n
© 2008 Microchip Technology Inc.
n
LSB Out
11
15
4
3
n - 1
12
n - 1
Mode 1,1
Mode 0,0