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参数资料
| 型号： | RS5C317B-E1 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封装： | 0.65 MM PITCH, SSOP-14 |
| 文件页数： | 25/40页 |
| 文件大小： | 347K |
| 代理商： | RS5C317B-E1 |
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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.
(TM3 to TM1 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
(II) Supply voltage drop
(III) Crystal oscillation halt
*3) When CLKC pin is held at high level at initial power-on, 32kHz clock is output from the 32KOUT pin.
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
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相关代理商/技术参数 |
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|---|---|
| RS5C321A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
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| RS5C338A | 制造商:RICOH 制造商全称: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 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
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