25AA640-I/P Microchip Technology, 25AA640-I/P Datasheet - Page 4

• Manufacturer Part Number: 25AA640-I/P
• Description: IC EEPROM 64KBIT 1MHZ 8DIP
• Manufacturer: Microchip Technology

Specifications of 25AA640-I/P

• Memory Size: 64K (8K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 1MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Memory Configuration: 8K X 8
• Ic Interface Type: SPI
• Clock Frequency: 1MHz
• Supply Voltage Range: 1.8V To 5.5V
• Memory Case Style: DIP
• No. Of Pins: 8
• Lead Free Status / RoHS Status: 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