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參數(shù)資料
| 型號： | RV5C348B |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | 4-WIRE SERIAL INTERFACE |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO10 |
| 封裝： | 4 X 2.90 MM, 1.20 MM HEIGHT, 0.50 MM PITCH, SSOP-10 |
| 文件頁數(shù)： | 38/45頁 |
| 文件大?。?/td> | 1276K |
| 代理商： | RV5C348B |
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Rx5C348A/B
Reading Time and Calendar Data
(1) Ordinary Process of Reading Time and Calendar Data
Read from Time Counter
and Calendar Counter
*2)
CE
← L
CE
← H
*1)
*1) When writing to clock and calendar counters, do not insert Stop Condition
until all times from second to year have been written to prevent error in
writing time. (Detailed "P.24
Considerations in Reading and Writing
Time Data under special condition".
*2) Take care so that process from Start Condition to Stop Condition will be
complete within 0.5sec.
(Detailed in "P.24
Considerations in
Reading and Writing Time Data under special condition".
(2) Basic Process of Reading Time and Calendar Data with Periodic Interrupt Function
*1) This step is intended to select the level mode as a
waveform mode for the periodic interrupt function.
*2) This step must be completed within 1.0 second.
*3) This step is intended to set the CTFG bit to 0 in the
Control Register 2 to cancel an interrupt to the CPU.
*2)
Other Interrupt
Processes
Set Periodic Interrupt
Cycle Selection Bits
CTFG=1?
Read from Time Counter
and Calendar Counter
Yes
No
Control Register 2
←(X1X1X011)
Generate Interrupt in CPU
*1)
*3)
12345
Rev.2.01
- 43 -
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