24AA16-I/P Microchip Technology, 24AA16-I/P Datasheet - Page 6

• Manufacturer Part Number: 24AA16-I/P
• Description: IC EEPROM 16KBIT 400KHZ 8DIP
• Manufacturer: Microchip Technology

Specifications of 24AA16-I/P

• Memory Size: 16K (2K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• 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-DIP (0.300", 7.62mm)
• Clock Frequency: 400kHz
• Supply Voltage Range: 1.7V To 5.5V
• Memory Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Package: RoHS Compliant
• Memory Configuration: 8 BLK (256 X 8)
• Interface Type: I2C, Serial, 2-Wire
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24AA16/24LC16B
3.6
A control byte is the first byte received following the
Start condition from the master device (Figure 3-2).
The control byte consists of a four-bit control code.
For the 24XX16, this is set as ‘
and write operations. The next three bits of the control
byte are the block-select bits (B2, B1, B0). They are
used by the master device to select which of the eight
256 word-blocks of memory are to be accessed.
These bits are in effect the three Most Significant bits
of the word address. It should be noted that the
protocol limits the size of the memory to eight blocks
of 256 words, therefore, the protocol can support only
one 24XX16 per system.
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 24XX16 monitors the
SDA bus, checking the device type identifier being
transmitted and, upon receiving a ‘
slave device outputs an Acknowledge signal on the
SDA line. Depending on the state of the R/W bit, the
24XX16 will select a read or write operation.
DS21703F-page 6
Operation
Read
Write
Device Addressing
Control
1010
1010
Code
0
’, a write operation is selected.
Block Address
Block Address
Block Select
1
’, a read operation is
1010
1010
’ binary for read
’ code, the
R/W
1
0
FIGURE 3-2:
Start Bit
S
1
Control Code
0
Slave Address
1
CONTROL BYTE
ALLOCATION
© 2005 Microchip Technology Inc.
0
B2 B1 B0 R/W ACK
Select
Block
Bits
Acknowledge Bit
Read/Write Bit