Shanghai Belling Corp., Ltd
BL24C02/04/08/16
requires an 11-bit data word address for random word addressing.
ꢀDevice Operation
CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an external device. Data
on the SDA pin may change only during SCL low time periods (see to Figure 1 on page 4). Data changes
during SCL high periods will indicate a start or stop condition as defined below.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which must
precede any other command (see to Figure 2 on page 4).
STOP CONDITION: A low-to-high transition of SDA with SCL high is a stop condition. After a read
sequence, the stop command will place the EEPROM in a standby power mode (see Figure 2 on page
4).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the EEPROM in
8-bit words. The EEPROM sends a "0" to acknowledge that it has received each word. This happens
during the ninth clock cycle. STANDBY MODE: The K24C02/K24C04/K24C08/K24C16 features a
low-power standby mode which is enabled: (a) upon power-up and (b) after the receipt of the STOP bit
and the completion of any internal operations
MEMORY RESET: After an interruption in protocol, power loss or system reset, any two-wire part can be
reset by following these steps:
1. Clock up to 9 cycles.
2. Look for SDA high in each cycle while SCL is high.
3. Create a start condition.
4
BELLING [ BELLING ]
