參數(shù)資料
型號(hào)： RV5C387A
廠商： RICOH COMPANY LTD
元件分類(lèi)： XO, clock
英文描述： I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO10
封裝： 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁(yè)數(shù)： 36/42頁(yè)
文件大?。?/td> 363K
代理商： RV5C387A
RV5C387A PRELIMINARY
12345
- 36 -
14.6.2.
Connection of /INTRA, /INTRB, and /INTRC Pin
The /INTRA, /INTRB, and /INTRC pins follow the N-channel open drain output logic and contains 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.
VDD
OSCIN
OSCOUT
/INTRA, /INTRB, or
/INTRC
*1)
32768Hz
B
A
Backup power supply
System power supply
VSS
14.6.3.
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
VDD
OSCIN
OSCOUT
32KOUT
VSS
32768Hz
B
Rp
Backup power supply
(VDD)
System power supply (VCC)
A
*1)
*1) Depending on whether the /INTRA, /INTRB, and
/INTRC 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.
相關(guān)PDF資料
PDF描述
RV5C387A-E2 I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
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RV5VE001C-E1 MULTI-POWER SUPPLY
RV5VE001C-E2 MULTI-POWER SUPPLY
RV5VE001A-E1 MULTI-POWER SUPPLY
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