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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： | 19/45页 |
| 文件大小： | 1276K |
| 代理商： | RT5C348B |
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Rx5C348A/B
SO
0Ch
Data
Bad Example (1)
(Where the CE pin is once driven low in the process of reading time data)
Less than 62
s
SO
F0h
CE
Time span of less than 31
s
Writing to
Address 0h
(sec.)
0Ch
CE
Bad Example (3)
(Where a time span of less than 61
s is left between the adjacent processes of reading time data)
Good Example
SO
DATA
F4h
DATA
CE
Address Pointer
= 1h
Transfer Format
Register = 4h
Time span of 31
s or more
Reading from
Address 1h
(min.)
DATA
SO
0Ch
Data
31
s or more
Reading from
Address 1h
(min.)
Data
14h
31
s or more
CE
Data transfer from RTCs
0Ch
Data
Data transfer from the host
Bad Example (2)
(Where a time span of less than 31
s is left until the start of the process of writing time data)
Any address other than addresses 0h to 6h
permits of immediate reading or writing without
requiring a time span of 31
s.
SI
Data
Reading from
Address Fh
(control2)
Reading from
Address 0h
(sec.)
Reading from
Address 2h
(hr.)
Address Pointer
= Fh
Transfer Format
Register = 4h
Address Pointer
= Fh
Transfer Format
Register = 0h
Reading from
Address 0h
(sec.)
Reading from
Address 2h
(hr.)
Address Pointer
= 0h
Transfer Format
Register = Ch
Writing to
Address 1h
(min.)
Writing to
Address 2h
(hr.)
Writing to
Address Fh
(contorl2)
Address Pointer
= 0h
Transfer Format
Register = Ch
Reading from
Address 0h
(sec.)
Reading from
Address 0h
(sec.)
Address Pointer
= 0h
Transfer Format
Register = Ch
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Rev.2.01
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