RV-3029 Datasheet, PDF (48/67 Pages) MICORO CRYSTAL SWITZERLAND – DTCXO Temperature Compensated Real Time Clock

Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3029
6.3. BIT TRANSFER
One data bit is transferred during each clock pulse. The data on the SDA line must remain stable during the HIGH
period of the clock pulse, as changes in the data line at this time are interpreted as control signals. Data change
should be executed during the LOW period of the clock pulse.
Bit Transfer
6.4. START AND STOP CONDITIONS
Any serial communication with the RV-3029 starts with a “START condition” and terminates with the “STOP
condition”.
Definition of START and STOP condition
Both SDA data and SCL clock lines remain HIGH when the bus is not busy.
A HIGH to LOW transition of the data line, while the clock is HIGH, is defined as the START condition (S).
A LOW to HIGH transition of the data line, while the clock is HIGH, is defined as the STOP condition (P).
The RV-3029 does not allow a repeated START. Therefore a STOP has to be released before the next START.
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