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參數(shù)資料
| 型號： | S-35399A03-J8T2U |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封裝： | HALOGEN FREE AND LEAD FREE, SOP-8 |
| 文件頁數(shù)： | 25/53頁 |
| 文件大?。?/td> | 472K |
| 代理商： | S-35399A03-J8T2U |
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2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35399A03
Seiko Instruments Inc.
31
Up-Count Operation
The up counter is a 24-bit read-only binary counter. This counter starts counting from “000000h” from power-on and returns
to “000000h” at the next clock after it has reached “FFFFFFh”. A clock pulse is a pulse that is output when the second-data
in the real-time data is “00h”. Therefore, some delay is made in the period that a clock pulse is being output due to Write
timing and Write data. The registers are not initialized unless power-on again, so that users are able to grasp the elapsed
time from power-on up to 30 years. Figure 32 shows the example of timing chart of up counter’s operation.
ON
OFF
000001 h 000010 h
FFFFFF h
000000 h
000001 h
000000 h
OFF
Power supply
Clock pulse
of real-time
second data
"00h"
20 s
60 s
40 s
24-bit binary
up counter
60 s
10 s
Write real-time
second data:
50 seconds
Write real-time
second data:
20 seconds
A clock pulse is
60 seconds or less.
A clock pulse is
60 seconds or more.
Figure 32 Timing Chart of 24-Bit Binary Up Counter
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S354 | 制造商:Johnson Electric / Parlex Corporation 功能描述: 制造商:Johnson Electric / Saia-Burgess 功能描述:Non Catalogue / S354 制造商:SAIA - BURGESS ELECTRONICS INC. 功能描述:Non Catalogue / S354 |
| S3540 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 400V 70A 2PIN DO-203AB - Bulk 制造商:MERKLE-KORFF INDUSTRIES 功能描述:OLD COLMAN P/N: 8004002 |
| S354-006 | 功能描述:CABLE SCSI II C50M/M 6' RoHS:是 類別:電纜組件 >> D形，Centronics 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 配置:VHDCI 68 位置公型至公型 長度:10.00'（3.05m） 纜線類型:圓形 - 黑色 屏蔽:屏蔽 樣式:SCSI Ultra 2 |
| S3-5409-LAB (W/O COVER) | 制造商:Molex 功能描述:CONNECTOR - Bulk |
| S3540PF | 制造商:Microsemi Corporation 功能描述:400V 35A 2PIN DO-21 - Bulk |
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