參數(shù)資料
型號(hào)： RS5C338A
廠商： RICOH COMPANY LTD
元件分類(lèi)： XO, clock
英文描述： 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO10
封裝： 6.40 X 3.50 MM, 1.25 MM HEIGHT, SSOP-10
文件頁(yè)數(shù)： 15/52頁(yè)
文件大?。?/td> 440K
代理商： RS5C338A
R
×
5C338A
12
Relation Between the Mode Waveform and the CTFG Bit
Pulse mode
Approx. 92
μ
s
CTFG bit
INTR pin
(Increment of second counter)
Rewriting of the second counter
Level mode
Setting CTFG bit to 0
(Increment of
second counter)
Setting CTFG bit to 0
CTFG bit
INTR pin
(Increment of
second counter)
(Increment of
second counter)
*
) In the pulse mode, the increment of the second counter is delayed by approximately 92μs from the falling edge of clock pulses. Consequently, time
readings immediately after the falling edge of clock pulses may appear to lag behind the time counts of the real-time clocks by approximately 1 second.
Rewriting the second counter will reset the other time counters of less than 1 second, driving the INTR pin low.
2) Level Mode : periodic interrupt signals are output with selectable interrupt cycle settings of 1 second, 1 minute, 1
hour, and 1 month. The increment of the second counter is synchronized with the falling edge of
periodic interrupt signals. For example, periodic interrupt signals with an interrupt cycle setting of
1 second are output in synchronization with the increment of the second counter as illustrated in
the timing chart below.
3) When the oscillation adjustment circuit is used, the interrupt cycle will fluctuate once per 20 seconds as follows:
Pulse Mode : the “L” period of output pulses will increment or decrement by a maximum of ±3.784ms.
For example, 1-Hz clock pulses will have a duty cycle of 50 ±0.3784%.
Level Mode : a periodic interrupt cycle of 1 second will increment or decrement by a maximum of ±3.784ms.
相關(guān)PDF資料
PDF描述
RS5C348A-E2 Real-Time Clock
RS5C348B-E2 Real-Time Clock
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RS5C338A-E2 制造商:RICOH 制造商全稱(chēng):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(chēng):RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE
RS5C348A-E2 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Real-Time Clock
RS5C348B 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE
RS5C348B-E2 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Real-Time Clock
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