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| 型号： | RV5C339 |
| 厂商： | Ricoh Co., Ltd. |
| 英文描述： | 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| 中文描述： | 3线串行接口实时时钟IC，带有电压检测功能 |
| 文件页数： | 43/51页 |
| 文件大小： | 421K |
| 代理商： | RV5C339 |
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RV5C339A
8.3-3 Applied Process of Reading Time and Calendar Data Synchronized with Periodic Interrupt Function
Time data need not be read from all the time counters when used for such ordinary purposes as time count
indication. This applied process can be used to read time and calendar data with substantial reductions in the load
involved in such reading.
CTFG=1?
Generate Interrupt to CPU
Write “
×,×,×,×,0,1,0,0”
to control Register 1
Write “
×,1,×,1,×,0,1,1”
to Control Register 2
NO
YES
Second Digit=00?
NO
YES
Use Previous Minute,
Hour, Day-of-week,
and Day-of-month Data
Read Minute, Hour, Day-of-week,
and Day-of-month Counters
*
1
*
2
*
4
*
3
Other Interrupt
Processes
Write “
×,1,×,1,×,0,1,1”
to Control Register 2
For Time Indication in “Day-of-month, Day-of-week, Hour,
Minute, and Second” Format:
*1) This step is intended to select the level mode as a waveform mode for the periodic interrupt function.
*2) If this step is completed within 1 second, the step of waiting described in “8.3-1 Ordinary Process of Reading Time and Calendar Data” above need not be
conducted. This step is detailed in “1.5 Considerations in Reading and Writing Time Data”.
*3) This step is intended to read time data from all the time counters only in the first session of reading time data after writing time data.
*4) This step is intended to set the CTFG bit to 0 in the control register 2 to cancel an interrupt to the CPU.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RV5C339A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RV5C339A_03 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION |
| RV5C339A-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RV5C348A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RV5C348B | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
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