RS5C348A RICOH Co.,Ltd., RS5C348A Datasheet - Page 24

• Manufacturer Part Number: RS5C348A
• Description: 4-wire Serial Interface Real-time Clock
• Manufacturer: RICOH Co.,Ltd.

Rx5C348A/B
Rev.2.01
(3) Combination of 1-byte Reading and writing Data Transfer Formats
The 1-byte reading and writing data transfer formats can be combined together and further followed by any other
data transfer format.
CE
SI
SO
The reading and writing data transfer formats correspond to the settings in the transfer format register as shown
in the table below.
Example of Reading Modify Writing Data Transfer
12345
Specifying Fh
in the
Address
1
Pointer
1
1
1
Setting Ch in
the Transfer
1
Format
Register
1
0 0
Data transfer from the host
(For Reading and Writing Data from and to Address Fh)
Writing data
transfer
Reading data
transfer
Reading data from
DATA
address Fh
1 Byte
8h
(1,0,0,0)
Ch
(1,1,0,0)
Specifying Fh
in the
Address
1
Pointer
1 1
- 24 -
1
Setting 8h in
the Transfer
1
Data transfer from the RTCs
Format
Register
0 0 0
Burst
0h
(0,0,0,0)
4h
(0,1,0,0)
Writing data to
DATA
address Fh