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參數(shù)資料
| 型號(hào)： | RS5C317A |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | ULTRA-COMPACT HIGH PERFORMANCE SERIAL REAL-TIME CLOCK ICs |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封裝： | 0.65 MM PITCH, SSOP-14 |
| 文件頁數(shù)： | 31/40頁 |
| 文件大?。?/td> | 309K |
| 代理商： | RS5C317A |
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RS5C317A/B
27
11. Timer
TMOUT outputs periodic pulses every registered time period (in BANK=1, at 9h). Setting TMR bit to 1 makes
the timer counter reset and possible to operate as a watch-dog-timer.
12. 32kHz Clock Output
Clock signal of 32kHz crystal oscillator can be output from the 32KOUT pin. When this function is disabled the
32KOUT pin is held at high impedance.
32kHz clock output can be controlled through CLKC pin and CLEN pin.
*
1) Timer counter is available when the CE pin is set 0.
*
2) Timer function is disabled when the XSTP bit is set to 1.
(TM
3
to TM
1
and TMCL of timer register become to 0)
*
3) Refer to “Timer register” in FUNCTON section regarding to T1, T2, and T3 in the above figure.
*
4) TMOUT will be OFF when the TMR bit is set to one with TMOUT=L (ON)
*
5) Write operation to the timer registers causes starting to operate of timer counter after resetting.
*
1) CLKC pin incorporates pulled down resistor.
*
2) The CLEN bit will be set to 0 when the XSTP bit is set to 1.
The conditions of the XSTP bit being set to 1 is as follows:
(I) Initial power-on
*
3) Do not hold the CLKC pin at high level when initial power on.
(II) Supply voltage drop
(III) Crystal oscillation halt
TMR
←
1
TMR
←
1
0.977 ms
MAX. T1
T2
T3
TMOUT
CLKC pin
CLEN bit
32KOUT output
L (open)
0 (disabled to write)
High impedance
H
0
Output 32kHz clock
H
1
High impedance
相關(guān)PDF資料 |
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| RS5C321A | ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
| RS5C321B | ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RS5C317A/B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:real-time clock ICs |
| RS5C317B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:ULTRA-COMPACT HIGH PERFORMANCE SERIAL REAL-TIME CLOCK ICs |
| RS5C321A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
| RS5C321A/B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:real-time clock ICs |
| RS5C321B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
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