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参数资料
| 型号： | RT5C348B |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | XO, clock |
| 英文描述： | 4-WIRE SERIAL INTERFACE |
| 中文描述： | REAL TIME CLOCK, PDSO10 |
| 封装： | 4 X 2.90 MM, 0.85 MM HEIGHT, 0.50 MM PITCH, TSSOP-10 |
| 文件页数： | 16/45页 |
| 文件大小： | 1276K |
| 代理商： | RT5C348B |
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Rx5C348A/B
Reading Data Transfer Formats
(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 selecting this
type of reading data Transfer Format.
1
0
Data
Example of 1-byte Reading Data Transfer (For Reading Data from Addresses Eh and 2h)
CE
SO
1
0 0
1
0
1
0
1 0 0
0 1
SI
Data transfer from the host
Data transfer from the RTCs
Specifying 2h
in the
Address
Pointer
Setting Ch in
the Transfer
Format
Register
Reading data from
address Eh
Reading data from
address 2h
Specifying Eh
in the
Address
Pointer
Setting Ch in
the Transfer
Format
Register
(2) Burst Reading Data Transfer Format
The second type of reading 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 reading data transfer is to be
commenced and then writing the setting of 4h 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 reading data transfer can be
completed by driving the CE pin low.
1
DATA
Example of Burst Reading Data Transfer (For Reading Data from Addresses Fh, 0h, and 1h)
CE
SO
1
0
0 0
1
DATA
SI
Data transfer from the host
Data transfer from the RTCs
Reading data from
address Fh
Specifying Fh
in the
Address
Pointer
Setting 4h in
the Transfer
Format
Register
Reading data from
address 0h
Reading data from
address 1h
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Rev.2.01
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