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參數(shù)資料
| 型號： | RV5C339 |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| 中文描述： | 3線串行接口實(shí)時(shí)時(shí)鐘IC，帶有電壓檢測功能 |
| 文件頁數(shù)： | 48/51頁 |
| 文件大?。?/td> | 421K |
| 代理商： | RV5C339 |
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3
RV5C339A
PIN DESCRIPTIONS
Pin No. Symbol
Name
Description
7
CE
Chip Enable Input
The CE pin is used for interfacing with the CPU. Should be held high to allow
access to the CPU. Incorporates a pull-down resistor. Should be held low or open
when the CPU is powered off. Allows a maximum input voltage of 5.5 volts regard-
less of supply voltage.
2
SCLK
Serial Clock Input
The SCLK pin is used to input clock pulses synchronizing the input and output of
data to and from the SIO pin. Allows a maximum input voltage of 5.5 volts regard-
less of supply voltage.
3
SIO
Serial Input/Output
The SIO pin is used to input and output data intended for writing and reading in
synchronization with the SCLK pin. CMOS input/output.
6
INTRA
Interrupt Output A
The INTRA pin is used to output periodic interrupt signals to the CPU and alarm
interrupt signals (Alarm_D). Disabled at power-on from 0 volts.
Nch. open drain output.
4
INTRB
Interrupt Output B
The INTRB pin is used to output alarm interrupt signals (Alarm_W). Disable at
power-on from 0 volts. Nch. open drain output.
1
32KOUT
32-kHz Clock Output
The 32KOUT pin is used to output 32.768-kHz clock pulses. Enabled at power-on
from 0 volts. Nch. open drain output. The RV5C339A is designed to be disabled
32-kHz clock output in response to a command from the host computer.
The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal oscilla-
tor (with all other oscillation circuit components built into the RV5C339A.)
The VDD pin is connected to the power supply. The VSS pin is grounded.
9
OSCIN
Oscillation Circuit
8
OSCOUT
Input/Output
10
VDD
Positive Power Supply Input
5
VSS
Negative Power Supply Input
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| RV5VG1XXC-E1 | POWER SUPPLY SUPPORT CKT, PDSO8 |
| RX-4045NBAA | REAL TIME CLOCK, PDSO22 |
| RX-4045SA-0 | REAL TIME CLOCK, PDSO14 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RV5C339A | 制造商:RICOH 制造商全稱: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 制造商全稱: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 制造商全稱: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 制造商全稱: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 制造商全稱:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
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