- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384892 > RV5C386A (RICOH COMPANY LTD) I2C-bus Real-Time Clock ICs with Voltage Monitoring Function PDF資料下載
參數(shù)資料
| 型號： | RV5C386A |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 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 |
| 文件頁數(shù)： | 31/42頁 |
| 文件大小： | 362K |
| 代理商： | RV5C386A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁
PRELIMINARY RV5C386A
12345
- 31 -
< Considerations in Using Oscillation Halt Sensing Circuit >
Be sure to prevent the oscillation halt sensing circuit from malfunctioning by preventing the following:
1) Instantaneous power-down on the VDD
2) Condensation on the crystal oscillator
3) On-board noise to the crystal oscillator
4) Applying to individual pins voltage exceeding their respective maximum ratings
In particular, note that the XSTP bit may fail to be set to 1 in the presence of any applied supply voltage as
illustrated below in such events as backup battery installation. Further, give special considerations to prevent
excessive chattering in the oscillation halt sensing circuit.
VDD
< Supply Voltage Sensing Circuit >
The Supply voltage monitoring circuit is configured to conduct a sampling operation during an interval of 7.8ms per
second to check for a drop in supply voltage below a threshold voltage of 2.1 or 1.6v for the VDSL bit setting of 0 (the
default setting) or 1, respectively, in the Control Register 2, thus minimizing supply current requirements as illustrated in
the timing chart below. This circuit suspends a sampling operation once the VDET bit is set to 1 in the Control Register
2.
VDET
(D6 at Address Fh)
XSTP
VDD
Threshold voltage of 2.1 or 1.6v
1s
VDET
←
0
7.8ms
Sampling operation by supply
voltage monitoring circuit
Internal initiali-
zation period
(1 to 2 sec.)
XSTP, VDET
←
0
相關PDF資料 |
PDF描述 |
|---|---|
| RV5C386A-E2 | I2C-bus Real-Time Clock ICs with Voltage Monitoring Function |
| RV5C387A | I2C-bus Real-Time Clock ICs with Voltage Monitoring Function |
| RV5C387A-E2 | I2C-bus Real-Time Clock ICs with Voltage Monitoring Function |
| RV5VE001A | CRYSTAL 20.0 MHZ 20PF |
| RV5VE001C-E1 | MULTI-POWER SUPPLY |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RV5C386A_03 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION |
| RV5C386A-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:I2C-bus Real-Time Clock ICs with Voltage Monitoring Function |
| RV5C387A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:I2C-bus Real-Time Clock ICs with Voltage Monitoring Function |
| RV5C387A_03 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION |
| RV5C387AE2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。