參數(shù)資料
型號(hào)： RX-4045NBAA
元件分類： XO, clock
英文描述： REAL TIME CLOCK, PDSO22
封裝： ROHS COMPLIANT, SON-22
文件頁(yè)數(shù)： 13/37頁(yè)
文件大?。?/td> 554K
代理商： RX-4045NBAA
RX - 4045 SA / NB
Page - 17
MQ442-01
8.4.2. Mode-specific output waveforms
1) Pulse mode
A 2-Hz or 1-Hz clock pulse is output.
The relation between the clock pulse and the count operation is shown below.
/INT pin
Overwrite seconds counter
CTFG bit
92s (approx)
(Count up seconds)
Note 1: As is shown in the above diagram, the seconds register's count up operation occurs approximately
92 s after the falling edge of the /INT output. Therefore, if the clock's value is read immediately
after the output's falling edge, the read clock value may appear to be about one second slower than
the RTC module's clock value.
Note 2: When the seconds counter is overwritten, the counter for time values under one second is also
reset, which causes the /INT level to go low ("L") again.
Note 3: When using the clock precision adjustment function, the periodic interrupt's cycle changes once
every 20 seconds.
During pulse mode:
The period during which the output pulse is low can be adjusted backward or forward up to
±3.784 msec.
(For example, the duty for the 1-Hz setting can be adjusted
±0.3784% from 50%.)
2) Level mode
Select among four interrupt cycles: one second, one minute, one hour, or one month.
Counting up of seconds occurs in sync with the falling edge of the interrupt output. The following is a timing
chart when a one-second interrupt cycle has been set.
/INT pin
(Count up seconds)
Write 0 to CTFG
CTFG bit
(Count up seconds)
Write 0 to CTFG
Note: When using the clock precision adjustment function, the periodic interrupt's cycle changes once every
20 seconds.
During level mode
A one-second period can be adjusted backward or forward up to
±3.784 msec.
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RX-4045SA 制造商:EPSON 制造商全稱:EPSON 功能描述:4-wire serial interface high-stability RTC module
RX-4045SA,(AA) 制造商:Epson Toyocom 功能描述:Serial Interface RTC SOP 14pin
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RX-409 功能描述:烙鐵 SOLDERING TIP RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included
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