Unit Operation CLOCK and Info TRANSITIONS

The SDA pin is normally pulled high with an exter- nal system. Knowledge to the SDA pin may possibly alter only during SCL very low time durations (seek advice from Data Validity timing diagram). Facts modifications in the course of SCL higher intervals will show a commence or prevent situation as described below.

Get started Issue: A high-to-low transition of SDA with SCL significant is usually a begin ailment which have to precede almost every other command (check with Begin and End Definition timing diagram).

Stop Ailment: A low-to-high transition of SDA with SCL higher is usually a end issue. Following a browse sequence, the end command will position the EEPROM inside of a standby energy method (seek advice from Start out and Prevent Definition timing diagram).

Acknowledge: All addresses and knowledge text are serially transmitted to and in the EEPROM in 8 little bit text. The EEPROM sends a zero to accept that it's got obtained each individual term. This happens all through the ninth clock cycle.

STANDBY Mode: The AT24C02A/04A/08A/16A functions a very low energy standby method which can be enabled: (a) upon power-up and (b) right after the receipt from the Halt little bit and the completion of any inner functions.

MEMORY RESET: Following an interruption in protocol, electricity reduction or technique reset, any 2-wire component might be reset by pursuing these measures: (a) Clock around 9 cycles, (b) glimpse for SDA higher in every cycle when SCL is higher and after that (c) develop a begin ailment as SDA is substantial.