rs5c338a RICOH Co.,Ltd., rs5c338a Datasheet - Page 23

• Manufacturer Part Number: rs5c338a
• Description: 3-wire Serial Interface Real-time Clock Ics With Voltage Monitoring Function
• Manufacturer: RICOH Co.,Ltd.

1.3-2 Burst Writing Data Transfer Format
The second type of writing data transfer format is designed to transfer a sequence of data serially and can be
selected by specifying in the address pointer a head address with which writing data transfer is to be commenced
and then writing the setting of 0h to the transfer format register. The address pointer is incremented for each
transfer of 1-byte data and cycled from Fh to 0h. This burst writing data transfer can be completed by driving the
CE pin low.
Example of Burst Writing Data Transfer (For Writing Data to Addresses Eh, Fh, and Oh)
1.4 Reading Data Transfer Formats
1.4-1 1-byte Reading Data Transfer Format
The first type of reading data transfer format is designed to transfer 1-byte data at a time and can be selected by
specifying in the address pointer a head address with which reading data transfer is to be commenced and then the
setting of writing Ch to the transfer format register. This 1-byte reading data transfer can be completed by driving
the CE pin low or continued by specifying a new head address in the address pointer and setting the transfer format.
Example of 1-byte Reading Data Transfer (For Reading Data from Addresses Eh and 2h)
CE
SIO
CE
SIO
Specifying Eh
in the address
pointer
Specifying Eh
in the address
pointer
1 1 1 0 0
1 1 1 0 1
Setting 0h
in the transfer
format register
Setting Ch
in the transfer
format register
Data transfer from the host
Data transfer from the host
0
1
0
0
0
0
Writing data
to address Eh
Reading data
from address Eh
Data
Data
Specifying 2h
in the address
pointer
0 0 1 0 1
Writing data
to address Fh
Data transfer from the real-time clocks
Data transfer from the real-time clocks
Data
Setting Ch
in the transfer
format register
1
0
0
Writing data
to address 0h
Reading data
from address 2h
Data
Data
R
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