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參數(shù)資料
| 型號： | S-35L32AEFSG |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO10 |
| 封裝： | 0.50 MM PITCH, PLASTIC, SSOP-10 |
| 文件頁數(shù)： | 18/37頁 |
| 文件大?。?/td> | 502K |
| 代理商： | S-35L32AEFSG |
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REAL-TIME CLOCK
Rev.1.3_00
S-35L32A
Seiko Instruments Inc.
25
6. Power voltage detecting circuit
S-35L32A has an internal power voltage detecting circuit. This circuit gives sampling movement for only
15.6 ms once a second. If the power voltage decreases below the detection voltage (VDET), the BLD latch
circuit latches the “H” level, and sampling movement stops. Only when subsequent communication is of the
status read command, the output of the latch circuit is transferred to the sift register and the sampling
movement is resumed. The decrease in power voltage can be monitored in reading the POWER flag. That is
to say, once it is detected, any detecting operation is not performed and "H" is held unless you perform
initialization or send the status read command.
Caution
When power voltage is increased and the first read operation is performed after decrease in
power voltage occurs and the latch circuit latches "H", "1" can be read on the POWER flag,
however, if the next read operation is performed after the sampling of the detecting circuit,
the POWER flag is reset since sampling is subsequently allowed. See the timing diagram
below.
Latch circuit output
Sampling pulse
(0)
1s
Stop
(1)
(1) (1)
(1)
(0)
POWER flag
VDD
VDET
Communication
Latch circuit
output
Sampling pulse
1 s
(1)
(0)
Communication
POWER flag
Carry pulse
[Timing of sampling pulse]
0.5 s
7.8 ms
Carry-up timing
1 Hz
15.6 ms
Latch timing
Sampling pulse
(1)
(0)
VDET
VDD
Stop
Figure 20 Timing of the power voltage detecting circuit
DISCONTINUED
PRODUCT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-35L32AEFS-TB | 功能描述:實時時鐘 REAL TIME CLOCK RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| S35PF | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Silicon Power Rectifier |
| S35-RO | 功能描述:撥動開關(guān) 3PDT ON-MOM 15A RoHS:否 制造商:C&K Components 觸點形式:DPDT 開關(guān)功能:ON - ON - ON 電流額定值: 電壓額定值 AC:20 V 電壓額定值 DC:20 V 功率額定值:0.4 VA 端接類型:V-Bracket 安裝風格: 端子密封:Epoxy 觸點電鍍:Gold 照明:Not Illuminated |
| S35T | 制造商:Enhance Technology 功能描述:STORPACK, 3X5.25" HDDS - Bulk |
| S3-5V | 制造商:Panasonic Electric Works 功能描述: |
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