24AA02H-I/SN Microchip Technology, 24AA02H-I/SN Datasheet - Page 7

• Manufacturer Part Number: 24AA02H-I/SN
• Description: 2K, 256 X 8 SERIAL EE, 1.8V IND, 1/2 ARRAY WP 8 SOIC 3.90mm (.150") TUBE
• Manufacturer: Microchip Technology

Specifications of 24AA02H-I/SN

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 2K (256 x 8)
• Speed: 100kHz, 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.6
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 24XX02H,
this is set as ‘
tions. The next three bits of the control byte are “don’t
cares” for the 24XX02H.
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 24XX02H monitors
the SDA bus, checking the device type identifier being
transmitted and, upon a
outputs an Acknowledge signal on the SDA line.
Depending on the state of the R/W bit, the 24XX02H
will select a read or write operation.
© 2008 Microchip Technology Inc.
Operation
Read
Write
Device Addressing
1010’
Control
1010
1010
Code
binary for read and write opera-
0
’, a write operation is selected.
‘1010’
Block Address
Block Address
Block Select
1
’, a read operation is
code, the slave device
R/W
1
0
FIGURE 4-2:
24AA02H/24LC02BH
Start Bit
x = “don’t care”
S
1
Control Code
0
Slave Address
1
CONTROL BYTE
ALLOCATION
0
x
Select
Block
Bits
x
Acknowledge Bit
Read/Write Bit
x
DS22105A-page 7
R/W ACK