RV-3029 Datasheet, PDF (53/67 Pages) MICORO CRYSTAL SWITZERLAND – DTCXO Temperature Compensated Real Time Clock

Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3029
6.8.3.READ MODE
• With the first byte, the Master has addressed the RV-3029 in Write Mode
• The Slave becomes the Transmitter and sends out the data from the last accessed Page / Word address
incremented by 1
• After reading a byte, within the same Memory-Page the Word-Address is automatically incremented by 1.
If “acknowledge” is not received, no auto increment of the address is executed and a following reading
transmits data of the same address
Example of Reading Data at the last accessed Page & Word address incremented by 1
1) Master sends out the “Start Condition”
2) Master sends out the “Slave Address”, ADh for the RV-3029; the R/ W bit = “1” for read mode
3) Acknowledgement from the RV-3029:
At this point, the Master becomes a Receiver, the Slave becomes the Transmitter
4) The RV-3029 sends out the “Data” from the last accessed Page / Word Address incremented by 1
5) Acknowledgement from the Master
6) Steps 4) and 5) can be repeated if necessary. Within the same Page-Address, the Word-Address will be
incremented by 1 automatically
7) The Master, addressed as Receiver, can stop data transmission by not generating an acknowledge on the
last byte that has been sent from the Slave-Transmitter. In this event, the Slave-Transmitter must leave the
data line HIGH to enable the Master to generate a “Stop condition”
8) Master sends out the “Stop Condition”
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