- 您现在的位置：买卖IC网 > PDF目录297329 > RV5C339 (Ricoh Co., Ltd.) 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION PDF资料下载
参数资料
| 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： | 33/51页 |
| 文件大小： | 421K |
| 代理商： | RV5C339 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页当前第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页
RV5C339A
36
4.2 Periodic Interrupt
Setting of the periodic selection bits (CT2 to CT0) enables periodic interrupt from the INTRA pin to the CPU. There
are two waveform modes: pulse mode and level mode. In the pulse mode, the output has a waveform duty cycle of
around 50%. In the level mode, the output is cyclically driven low and, when the CTFG bit is set to 0, the output is set
to high (OFF).
Waveform Mode, Cycle and Falling Timing
1) Pulse Mode : 2-Hz and 1-Hz clock pulses are output in synchronization with the increment of the second counter
as illustrated in the timing chart on the next page.
2) Level Mode : periodic interrupt signals are output with selectable interrupt cycle settings of 1 second, 1 minute, 1
hour, and 1 month. The increment of the second counter is synchronized with the falling edge of
periodic interrupt signals. For example, periodic interrupt signals with an interrupt cycle setting of
1 second are output in synchronization with the increment of the second counter as illustrated in
the timing chart on the next page.
3) When the oscillation adjustment circuit is used, the interrupt cycle will fluctuate once per 20 seconds as follows:
Pulse Mode : the “L” period of output pulses will increment or decrement by a maximum of ±3.784ms.
For example, 1-Hz clock pulses will have a duty cycle of 50 ±0.3784%.
Level Mode : a periodic interrupt cycle of 1 second will increment or decrement by a maximum of ±3.784ms.
CT2
CT1
CT0
Description
Waveform mode
Cycle and falling timing
0
—
Off (“H”)
0
1
—
Fixed at low (“L”)
0
1
0
Pulse Mode*1
2Hz (Duty cycle of 50%)
0
1
Pulse Mode*1
1Hz (Duty cycle of 50%)
1
0
Level Mode*2
Once per 1 second (Synchronized with second counter increment)
1
0
1
Level Mode*2
Once per minute (at 00 seconds of every minute)
1
0
Level Mode*2
Once per hour (at 00 minutes and 00 seconds of every hour)
1
Level Mode*2
Once per month (at 00 hours, 00 minutes, and 00 seconds of first day of every month)
(Default setting)
相关PDF资料 |
PDF描述 |
|---|---|
| RV5VG1XXC-E1 | POWER SUPPLY SUPPORT CKT, PDSO8 |
| RX-4045NBAA | REAL TIME CLOCK, PDSO22 |
| RX-4045SA-0 | REAL TIME CLOCK, PDSO14 |
| RX-4045SA-3 | REAL TIME CLOCK, PDSO14 |
| RX-4801JE | REAL TIME CLOCK, PDSO20 |
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 |
发布紧急采购，3分钟左右您将得到回复。