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| 型号： | DS1689S-TRL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/36页 |
| 文件大小： | 0K |
| 描述： | IC RTC SER W/NV RAM CTRL 28-SOIC |
| 标准包装： | 1,000 |
| 类型： | 时钟/日历 |
| 特点： | NVSRAM |
| 存储容量： | 114B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | 并联 |
| 电源电压： | 2.7 V ~ 3.3 V，4.5 V ~ 5.5 V |
| 电压 - 电源，电池： | 2.5 V ~ 3.7 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 管件 |
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DS1689/DS1693
33 of 36
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 VCCI input pin to the VCCO pin.
5) Write protection trip point occurs during power fail prior to switchover from VCC to VBAT.
6) Value for voltage and currents is from the VBAT input pin to the VCCO 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 50pF + 1 TTL gate.
10) Wake-up/kickstart timeout generated only when the oscillator is enabled and the countdown chain is
not reset.
11) VSW is determined by the larger of VBAT and VBAUX.
12) ZCE is an average input to output impedance as the input is swept from GND to VCCI and less than
4mA is forced through ZCE.
13) The DS1693 keeps time to an accuracy of
±1 minute per month during data retention time for the
period of tDR.
14) tDR is the amount of time that the internal battery can power the internal oscillator and internal
registers of the DS1693. As such, tDR is specified with VCCO floating. If VCCO is powering an external
SRAM, an auxiliary battery must be connected to the VBAUX pin. The auxiliary battery should be sized
such that it can power the external SRAM for the tDR period.
15) The
CEI pin has an internal pullup of 60k
.
16) The PSEL pin has an internal pulldown of 60k
.
17) For industrial grade parts, IBAT (with OSC off) limit increases to 250nA.
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1691 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1691 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691/1692 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691A | 制造商:NSC 制造商全称:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs |
| DS1691AJ/883 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs |
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