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參數(shù)資料
| 型號： | DS1644 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA28 |
| 封裝： | 0.720 INCH, PLASTIC, MODULE, DIP-28 |
| 文件頁數(shù)： | 11/11頁 |
| 文件大小： | 178K |
| 代理商： | DS1644 |
DS1644/DS1644P
9 of 11
POWER-DOWN/POWER-UP TIMING
NOTES:
1. All voltages are referenced to ground.
2. Typical values are at 25
°C and nominal
supplies.
3. Outputs are open.
4. Data retention time is at 25
°C and is
calculated from the date code on the device
package. The date code XXYY is the year
followed by the week of the year in which
the device was manufactured. For example,
9225 would mean the 25
th week of 1992.
OUTPUT LOAD
5. tAH1, tDH1 are measured from WE going high.
6. tAH2, tDH2 are measured from CE going high.
7. Real-Time Clock Modules (DIP) can be successfully processed through conventional wave-soldering
techniques as long as temperatures 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.
In addition, for the PowerCap version:
a. Dallas Semiconductor recommends that PowerCap Module bases experience one pass through
solder reflow oriented with the label side up (“l(fā)ive - bug”).
b. Hand soldering and touch-up: Do not touch or apply the soldering iron to leads for more than
3 (three) seconds. To solder, apply flux to the pad, heat the lead frame pad and apply solder. To
remove the part, apply flux, heat the lead frame pad until the solder reflows and use a solder wick
to remove solder.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1646-120 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1646P-120 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1646L-120 | 0 TIMER(S), REAL TIME CLOCK, DSO34 |
| DS1646 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1646P | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1644+120 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS16440-120 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS16440120+ | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1644-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
| DS1644-120 | 功能描述: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 |
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