24LC01B-I/SN Microchip Technology, 24LC01B-I/SN Datasheet - Page 7

• Manufacturer Part Number: 24LC01B-I/SN
• Description: IC EEPROM 1KBIT 400KHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 24LC01B-I/SN

• Memory Size: 1K (128 x 8)
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Organization: 128 K x 8
• Interface Type: I2C
• Maximum Clock Frequency: 0.4 MHz
• Access Time: 900 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

5.0
A control byte is the first byte received following the
Start condition from the master device. The control byte
consists of a four-bit control code. For the 24XX01, this
is set as ‘
The next three bits of the control byte are “don’t cares”
for the 24XX01.
The last bit of the control byte defines the operation to
be performed. When set to ‘
selected. When set to ‘
Following the Start condition, the 24XX01 monitors the
SDA bus, checking the device type identifier being
transmitted. Upon receiving a ‘
device outputs an Acknowledge signal on the SDA line.
Depending on the state of the R/W bit, the 24XX01 will
select a read or write operation.
FIGURE 5-2:
© 2009 Microchip Technology Inc.
Operation
Read
Write
DEVICE ADDRESSING
1010
’ binary for read and write operations.
Control
x = “don’t care”
Code
1010
1010
1
Control
Code
0
0
ADDRESS SEQUENCE BIT ASSIGNMENTS
’, a write operation is selected.
1
Control Byte
Block Address
Block Address
Block Select
0
1
1010
’, a read operation is
x
Select
Block
’ code, the slave
bits
x
x
R/W
R/W
1
0
FIGURE 5-1:
x
Start Bit
x = “don’t care”
S
A
6
Address Low Byte
24AA01/24LC01B
•
1
Control Code
•
0
•
Slave Address
1
•
CONTROL BYTE
ALLOCATION
0
•
A
0
x
Select
Block
Bits
x
Acknowledge Bit
Read/Write Bit
x
DS21711J-page 7
R/W ACK