參數(shù)資料
型號(hào)： DS17885S-5
英文描述： 3V/5V Real-Time Clock
中文描述： 3V/5V實(shí)時(shí)時(shí)鐘
文件頁(yè)數(shù)： 6/38頁(yè)
文件大小： 410K
代理商： DS17885S-5
DS17885/DS17887
6 of 38
DS17885 ONLY
X1, X2 –
Connections for a standard 32.768kHz quartz crystal. For greatest accuracy, the DS17885 must
be used with a crystal that has a specified load capacitance of either 6pF or 12.5pF. The crystal select
(CS) bit in extended-control register 4B is used to select operation with a 6pF or 12.5pF crystal. The
crystal is attached directly to the X1 and X2 pins. There is no need for external capacitors or resistors.
Note: X1 and X2 are very high-impedance nodes. It is recommended that they and the crystal be guard-
ringed with ground and that high frequency signals be kept away from the crystal area.
For more information about crystal selection and crystal layout considerations, refer to
Application Note
58
, “Crystal Considerations with Dallas Real-Time Clocks.” The DS17885 can also be driven by an
external 32.768kHz oscillator. In this configuration, the X1 pin is connected to the external oscillator
signal and the X2 pin is floated.
V
BAT
–
Battery input for any standard 3V lithium cell or other energy source. Battery voltage must be
held between 2.5V and 3.7V for proper operation. UL recognized to ensure against reverse charging
.
相關(guān)PDF資料
PDF描述
DS17885SN-3 3V/5V Real-Time Clock
DS17885SN-5 3V/5V Real-Time Clock
DS17887 3V/5V Real-Time Clock
DS17885EN-3 3V/5V Real-Time Clock
DS17885EN-5 3V/5V Real-Time Clock
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS17885S-5/T&R+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 8KBYTE 24SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC 5V 8K NV RAM 24-SOIC
DS17885S-5/T&R 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
DS17885S-5/T&R+ 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC 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
DS17885S-5+ 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC 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
DS17885SN-3 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:3V/5V Real-Time Clock
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