34LC02-E/P Microchip Technology, 34LC02-E/P Datasheet - Page 9

• Manufacturer Part Number: 34LC02-E/P
• Description: IC EEPROM 2KBIT 1MHZ 8DIP
• Manufacturer: Microchip Technology

Specifications of 34LC02-E/P

• Memory Size: 2K (256 x 8)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 1MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Organization: 256 K x 8
• Interface Type: I2C
• Maximum Clock Frequency: 1 MHz
• Access Time: 400 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.2 V
• Maximum Operating Current: 3 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

5.0
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the Stop condition for a Write
command has been issued from the master, the device
initiates the internally timed write cycle. ACK polling
can be initiated immediately. This involves the master
sending a Start condition followed by the control byte
for a Write command (R/W =
busy with the write cycle, then no ACK will be returned.
If the cycle is complete, then the device will return the
ACK and the master can then proceed with the next
Read or Write command. See Figure 5-1 for flow
diagram.
FIGURE 5-1:
 2010 Microchip Technology Inc.
ACKNOWLEDGE POLLING
Initiate Write Cycle
Send Control Byte
Write Command
with R/W = 0
Acknowledge
Condition to
Send Stop
(ACK = 0)?
Did Device
Send Start
Operation
Send
Next
ACKNOWLEDGE
POLLING FLOW
Yes
0
). If the device is still
No
34AA02/34LC02
DS22029E-page 9