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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： | 37/51页 |
| 文件大小： | 421K |
| 代理商： | RV5C339 |
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39
RV5C339A
6.2 Connection of INTRA and INTRB Pins
The INTRA and INTRB pins follow the N-channel open drain output logic and contain no protective diode on the
power supply side. As such, it can be connected to a pull-up resistor of up to 5.5 volts regardless of supply voltage.
6.3 Connection of 32KOUT Pin
The 32KOUT pin follows the Nch. open drain output and contains no protective diode on the power supply side. As
such, it can be connected to a device with a supply voltage of up to 5.5 volts regardless of supply voltage, provided
that such connection involves considerations for the supply current requirements of a pull-up resistor, which can be
roughly calculated by the following equation:
I=0.5
×(VDD or VCC)/Rp
System power supply
A
B
OSCIN
OSCOUT
VDD
VSS
INTRA or INTRB
Backup battery
32.768kHz
RV5C339A
*
1
OSCIN
OSCOUT
VDD
VSS
32KOUT
System power supply (VCC)
A
B
Backup battery
32.768kHz
Rp
(VDD)
RV5C339A
*
1
*1) Depending on whether the INTRA and INTRB pins are to be
used during battery backup, it should be connected to a pull-up
resistor at the following different positions:
1) Position A in the left diagram when it is not to be used during
battery backup.
2) Position B in the left diagram when it is to be used during
battery backup.
*1) Depending on whether the 32KOUT pin is to be used during
battery backup, it should be connected to a pull-up resistor at
the following different positions:
1) Position A in the left diagram when it is not to be used during
battery backup.
2) Position B in the left diagram when it is to be used during
battery backup.
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| RX-4045NBAA | REAL TIME CLOCK, PDSO22 |
| RX-4045SA-0 | REAL TIME CLOCK, PDSO14 |
| RX-4045SA-3 | REAL TIME CLOCK, PDSO14 |
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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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