參數(shù)資料
型號(hào)： DS1251WP-120
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 0K
描述： IC NVSRAM 4MBIT 120NS 34PCM
標(biāo)準(zhǔn)包裝： 40
類型： Phantom 計(jì)時(shí)芯片
特點(diǎn)： 閏年，NVSRAM
存儲(chǔ)容量： 512KB
時(shí)間格式： HH:MM:SS:hh（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： 并聯(lián)
電源電壓： 2.97 V ~ 3.63 V
電壓 - 電源，電池： 3V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 34-PowerCap? 模塊
供應(yīng)商設(shè)備封裝： 34-PowerCap 模塊
包裝： 管件
DS1251/DS1251P
7 of 20
BATTERY LONGEVITY
The DS1251 has a lithium power source that is designed to provide energy for clock activity, and clock
and RAM data retention when the VCC supply is not present. The capability of this internal power supply
is sufficient to power the DS1251 continuously for the life of the equipment in which it is installed. For
specification purposes, the life expectancy is 10 years at +25°C with the internal clock oscillator running
in the absence of VCC power. Each DS1251 is shipped from Maxim with its lithium energy source
disconnected, guaranteeing full energy capacity. When VCC is first applied at a level greater than VPF, the
lithium energy source is enabled for battery-backup operation. Actual life expectancy of the DS1251 will
be much longer than 10 years since no lithium battery energy is consumed when VCC is present.
CLOCK ACCURACY (DIP MODULE)
The DS1251 is guaranteed to keep time accuracy to within ±1 minute per month at +25°C. The clock is
calibrated at the factory by Maxim using special calibration nonvolatile tuning elements. The DS1251
does not require additional calibration and temperature deviations will have a negligible effect in most
applications. For this reason, methods of field clock calibration are not available and not necessary.
CLOCK ACCURACY (POWERCAP MODULE)
The DS1251P and DS9034PCX are each individually tested for accuracy. Once mounted together, the
module is guaranteed to keep time accuracy to within ±1.53 minutes per month (35ppm) at +25°C.
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參數(shù)描述
DS1251WP-120+ 功能描述:實(shí)時(shí)時(shí)鐘 4096K NV SRAM w/Phantom Clock 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
DS1251WP-120+C01 功能描述:實(shí)時(shí)時(shí)鐘 4096K NV SRAM w/Phantom Clock 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
DS1251WP-120+C02 功能描述:實(shí)時(shí)時(shí)鐘 4096K NV SRAM w/Phantom Clock 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
DS1251WP-120IND 功能描述:IC NVSRAM 4MBIT 120NS 34PCM RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
DS1251WP-120IND+ 功能描述:實(shí)時(shí)時(shí)鐘 4096K NV SRAM w/Phantom Clock 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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