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參數(shù)資料
| 型號： | DS1689 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| 封裝： | 0.600 INCH, DIP-28 |
| 文件頁數(shù)： | 23/32頁 |
| 文件大?。?/td> | 376K |
| 代理商： | DS1689 |
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DS1689/DS1693
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will be in auto-sense mode and will determine the correct operating voltage based on the VCCI voltage
level.
PSEL (Power Select Input) - This pin selects whether 3-volt operation or 5-volt operation will be used.
When PSEL is a logic 1, 5-volt operation is selected. When PSEL is a logic 0 or is floated, the device will
be in auto-sense mode and will determine the correct mode of operation based on the voltage on VCCI.
VCCO (External SRAM Power Supply Output) - This pin will be internally connected to VCCI when
VCCI is within nominal limits. However, during power fail, VCCO will be internally connected to the VBAT
or VBAUX (whichever is larger). For 5-volt operation, switch over from VCCI to the backup supply occurs
when VCCI drops below the larger of VBAT and VBAUX. For 3-volt operation, switch over from VCCI to the
backup supply occurs at VPF if VPF is less than VBAT and VBAUX. If VPF is greater than VBAT and VBAUX,
the switch from VCCI to the backup supply occurs when VCCI drops below the larger of VBAT and VBAUX.
DS1689/DS1693 BLOCK DIAGRAM Figure 1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1720S+T&R | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1720S+ | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1720S | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1721S+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT |
| DS1721U+ | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, SQUARE, SURFACE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1689_05 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689S | 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1689S/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689S/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689S/T&R | 制造商:Rochester Electronics LLC 功能描述: |
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