24LC02B-I/SNG Microchip Technology, 24LC02B-I/SNG Datasheet - Page 18

• Manufacturer Part Number: 24LC02B-I/SNG
• Description: IC EEPROM 2KBIT 400KHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 24LC02B-I/SNG

• Memory Size: 2K (256 x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Memory Configuration: 256 X 8
• Ic Interface Type: I2C
• Clock Frequency: 400kHz
• Supply Voltage Range: 2.5V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Package: 8SOIC N
• Interface Type: Serial-I2C
• Density: 2 Kb
• Maximum Operating Frequency: 0.4 MHz
• Maximum Random Access Time: 900 ns
• Typical Operating Supply Voltage: 3.3|5 V
• Organization: 256x8
• Data Retention: 200(Min) Year
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24AAXX/24LCXX/24FCXX
7.0
Since the device will not acknowledge commands
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 con-
trol byte for a Write command (R/W = 0). If the device
is still busy with the write cycle, then no ACK will be
returned. If no ACK is returned, the Start bit and control
byte must be re-sent. If the cycle is complete, then the
device will return the ACK and the master can then pro-
ceed with the next Read or Write command. See
Figure 7-1 for flow diagram.
DS21930C-page 18
ACKNOWLEDGE POLLING
FIGURE 7-1:
Initiate Write Cycle
Send Control Byte
Write Command
with R/W = 0
Condition to
Acknowledge
Send Stop
Send Start
Did Device
(ACK = 0)?
Operation
Send
Next
ACKNOWLEDGE
POLLING FLOW
© 2007 Microchip Technology Inc.
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