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參數資料
| 型號： | DS1693 |
| 英文描述： | 3-Volt/5-Volt Serialized Real-Time Clock with NV RAM Control |
| 文件頁數： | 30/32頁 |
| 文件大?。?/td> | 321K |
| 代理商： | DS1693 |
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DS1689/DS1693
30 of 32
NOTES:
1.
All voltages are referenced to ground.
2.
Typical values are at 25 C and nominal supplies.
3.
Outputs are open.
4.
Value for voltage and currents is from the V
CCI
input pin to the V
CCO
pin.
5.
Write protection trip point occurs during power fail prior to switchover from V
CC
to V
BAT
.
6.
Value for voltage and currents is from the V
BAT
input pin to the V
CCO
pin.
7.
Applies to the AD0-AD7 pins, and the SQW pin when each is in a high impedance state.
8.
The
IRQ
pin is open drain.
9.
Measured with a load of 50 pF + 1 TTL gate.
10.
Wakeup kickstart timeout generated only when the oscillator is enabled and the countdown chain is
not reset.
11.
V
SW
is determined by the larger of V
BAT
and V
BAUX
.
12.
Z
CE
is an average input to output impedance as the input is swept from GND to V
CCI
and less than
4 mA is forced through Z
CE
.
13.
The DS1693 will keep time to an accuracy of 1 minute per month during data retention time for the
period of t
DR
.
14.
t
DR
is the amount of time that the internal battery can power the internal oscillator and internal
registers of the DS1693. As such, t
DR
is specified with V
CCO
floating. If V
CCO
is powering an external
SRAM, an auxiliary battery must be connected to the V
BAUX
pin. The auxiliary battery should be sized
such that it can power the external SRAM for the t
DR
period.
The
CEI
pin has an internal pull-up of 60 k .
16.
The PSEL pin has an internal pull-down of 60 k
17.
For industrial grade parts, I
BAT
(with OSC off) limit increases to 250 nA.
18.
Real-Time Clock Modules can be successfully processed through conventional wave-soldering
techniques as long as temperature exposure to the lithium energy source contained within does not
exceed +85 C. Post-solder cleaning with water washing techniques is acceptable, provided that
ultrasonic vibration is not used.
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|---|---|
| DS1693+ | 功能描述: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 |
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| DS1699-10 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:ELECTRONIC DIGITAL RHEOSTAT |
| DS1699-100 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:ELECTRONIC DIGITAL RHEOSTAT |
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