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參數(shù)資料
| 型號： | S-3530A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實時時鐘芯片) |
| 中文描述： | CMOS實時時鐘IC支持一個IIC總線（支持IIC總線的實時時鐘芯片的CMOS） |
| 文件頁數(shù)： | 16/31頁 |
| 文件大小： | 201K |
| 代理商： | S-3530A |
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Real-Time Clock
S-3530A
Seiko Instruments Inc.
15
6.
Power voltage detecting circuit
S-3530 has an internal power voltage detecting circuit. This circuit gives sampling movement for only 15.6msec. once a second.
If the power voltage decreases below the detected voltage (VDET), 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.
[Note]
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)
1sec
1sec
Stop
Stop
Stop
(1)
(1)
(1) (1)
(1) (1)
(0)
VDD
POWER flag
V
DET
Communication
Latch circuit
output
Sampling pulse
Carry pulse
1sec
1sec
(1)
(0)
Communication
POWER flag
[Timing of sampling pulse]
0.5sec
0.5sec
7.8msec
Carry-up timing
15.6msec
Latch timing
1Hz
V
DET
Sampling pulse
(1)
(0)
Figure 16 Timing of the power voltage detecting circuit
VDD
Stop
Stop
Stop
Stop
相關PDF資料 |
PDF描述 |
|---|---|
| S-3530 | REAL-TIME CLOCK |
| S-3530AEFS | REAL-TIME CLOCK |
| S-3531A | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實時時鐘芯片) |
| S-4520BACA | DOT MATRIX LCD DRIVER |
| S-4520BACG | DOT MATRIX LCD DRIVER |
相關代理商/技術參數(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:實時時鐘 實時時鐘 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 |
| 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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