Shanghai Belling Corp., Ltd

BL24C02/04/08/16

5

Device Addressing

The 2K, 4K, 8K and 16K EEPROM devices all require an 8-bit device address word following a start

condition to enable the chip for a read or write operation (see to Figure 4 on page 7).

The device address word consists of a mandatory "1", "0" sequence for the first four most significant bits

as shown. This is common to all the Serial EEPROM devices.

The next 3 bits are the A2, A1 and A0 device address bits for the 2K EEPROM. These 3 bits must

compare to their corresponding hardwired input pins.

The 4K EEPROM only uses the A2 and A1 device address bits with the third bit being a memory page

address bit. The two device address bits must compare to their corresponding hardwired input pins. The