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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： | 38/51页 |
| 文件大小： | 421K |
| 代理商： | RV5C339 |
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RV5C339A
40
6.4 Connection of CE Pin
Observe the following precautions when you connect the CE pin.
1) The CE pin is configured to enable the oscillation halt sensing circuit only when driven low. As such, it should be
driven low or open at power-on from 0 volts.
2) The CE pin should also be driven low or open immediately upon the host going down (see “1.5 Considerations in
Reading and Writing Time Count Data”).
3) The reading function should be disrupted when the CE signal goes to “low” during read cycle. While, the upper 4
bits of the data might be written to the inner shift register when the CE signal goes to “low” during write cycle.
(Because the writing function is executed 4 bits by 4 bits.) In either case, after the CE signal returns to “High”,
no trouble will occur in the next read or write cycle.
Lower limit operating voltage
for the CPU
Backup voltage
0.2
×VDD
MIN. 0
s MIN. 0s MIN. 0s
VDD
CE
I/O
CONTROL
SCLK
SIO
CE
2
3
7
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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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