R2023T-E2-F Datasheet, PDF (30/56 Pages) RICOH electronics devices division – 2-wire Serial Interface Real Time Clock IC

R2023x
* R2023K (FFP12) is the discontinued product as of February, 2016.
The third method to reading data from the internal register is to start reading immediately after writing to the
Slave Address and R/W bit. Since the Internal Address Pointer is set to Fh by default as described in the first
method, this method is only effective when reading is started from the Internal Address Fh.
Example 3 of data read (when data is read from internal addresses Fh to 3h)
R/W=1(Read)
S01100101A
Data
A
Data
A
Slave Address
← (0110010)
Reading of data from Reading of data from
the Internal Address Fh the Internal Address 0h
Data
A
Data
A
Data
/A P
Reading of data from Reading of data from Reading of data from
the Internal Address 1h the Internal Address 2h the Internal Address 3h
Master to slave
S Start Condition
A A /A ^{Acknowledge Signal}
Slave to master
P ^{Stop Condition}
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