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參數(shù)資料
| 型號(hào)： | S-3530AECA |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | REAL TIME CLOCK, UUC8 |
| 封裝： | 2.10 X 1.60 MM, DIE-8 |
| 文件頁數(shù)： | 15/34頁 |
| 文件大小： | 630K |
| 代理商： | S-3530AECA |
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REAL-TIME CLOCK
S-3530A
Rev.1.3_00
22
Seiko Instruments Inc.
6. Power voltage detecting circuit
S-3530 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 “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.
Decrease in power voltage can be monitored by reading the POWER flag. That is to say, once decrease in
power voltage 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)
1 s
Stop
(1)
(1) (1)
(1)
(0)
POWER flag
VDD
VDET
Communication
Sampling pulse
1 s
Communication
Carry pulse
[Timing of sampling pulse]
0.5 s
7.8 ms
Carry-up timing
15.6 ms
Latch timing
1 Hz
Sampling pulse
VDET
VDD
Stop
Latch circuit
output
(1)
(0)
POWER flag
(1)
(0)
Figure 20 Timing of the power voltage detecting circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S-3531AECA-TB-01 | REAL TIME CLOCK, UUC8 |
| S-35380A-T8T1G | REAL TIME CLOCK, PDSO8 |
| S-35380A-J8T1G | REAL TIME CLOCK, PDSO8 |
| S-35390A-I8T1-G | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| S-35390A-J8T1G | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-3530AEFS | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:REAL-TIME CLOCK |
| S-3530AEFS-TB01 | 功能描述:實(shí)時(shí)時(shí)鐘 實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| S3534BR-L006-030-E69 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
| S3534CR-E020-00.5-E69 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
| S3534UR-L006-02.0-E66 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
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