- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384890 > RS5C321B (RICOH COMPANY LTD) ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz PDF資料下載
參數(shù)資料
| 型號： | RS5C321B |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封裝： | 0.65 MM PITCH, SSOP-8 |
| 文件頁數(shù)： | 23/33頁 |
| 文件大?。?/td> | 252K |
| 代理商： | RS5C321B |
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頁當前第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁
RS5C321A/B
19
Considerations in Use of XSTP Bit
7. Oscillator Halt Sensing
Oscillation Halt can be sensed through monitoring the XSTP bit with preceding setting of the XSTP bit to 0 by
writing any data to the control register 1. Upon oscillator halt sensing, the XSTP bit is switched from 0 to 1. This
function can be applied to judge clock data validity. The CLEN bit is set to 0 when XSTP=1, and 32KOUT pin is
forced to output 32.768kHz clock pulses.
*
1) While the CE pin is held at the low level, the XSTP bit is set to 1 upon power-on from 0V.
Note that any instantaneous power disconnection may cause operational failure. When the CE pin is held at the high level, oscillation halt is not
sensed and the value of the XSTP bit when the CE pin is held at the low level is retained.
*
2) Once oscillation halt has been sensed, the XSTP bit is held at 1 even if oscillation is restarted.
Ensure error-free oscillation halt sensing by preventing the following:
1) Instantaneous disconnection of VDD
2) Condensation on the crystal oscillator
3) Generation of noise on the PCB in the crystal oscillator
4) Application of voltage exceeding prescribed maximum ratings to the individual pins of the IC
Power-on from 0V
*
1
XSTP
Oscillation halt
Writing of data to
control register 1
(in the presence of oscillation)
Oscillation restart
*
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RS5C338A-E2 | DIODE ZENER SINGLE 500mW 2.4Vz 0.05mA-Izt 0.05 2uA-Ir 1 SOD-123 3K/REEL |
| RS5C338A | 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RS5C348A-E2 | Real-Time Clock |
| RS5C348B-E2 | Real-Time Clock |
| RT1710B6 | LVDS & LVPECL FPGA Terminator RoHS Compliant Parts Available |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RS5C338A | 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 |
| RS5C338A-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 |
| RS5C348A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
| RS5C348A-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Real-Time Clock |
| RS5C348B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。