參數(shù)資料
型號(hào): PT7C4311WEX
廠商: Pericom
文件頁(yè)數(shù): 12/17頁(yè)
文件大?。?/td> 0K
描述: IC RTC LEAP YEAR Y2K 8SOIC
標(biāo)準(zhǔn)包裝: 1
類型: 時(shí)鐘/日歷
特點(diǎn): 閏年,方波輸出,Y2K
存儲(chǔ)容量: 56B
時(shí)間格式: HH:MM:SS(24 小時(shí))
數(shù)據(jù)格式: YY-MM-DD-dd
接口: I²C,2 線串口
電源電壓: 1.2 V ~ 5.5 V
電壓 - 電源,電池: 2 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: PT7C4311WEXDKR
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PT0322(08/09)
Ver: 2
4
Data Sheet
PT7C4311
Real-time Clock Module (I
2C Bus)
Function Description
Overview of Functions
1.
Clock function
CPU can read or write data including the year (last two digits), month, date, day, hour, minute, and second. Any (two-digit) year
that is a multiple of 4 is treated as a leap year and calculated automatically as such until the year 2100.
2.
Interface with CPU
2-wire I2C interface. The PT7C4311 continually monitors VCC for an out of tolerance condition. Should VCC fall below VSO, the
device terminates an access in progress and resets the device address counter. Inputs to the device will not be recognized at this
time to prevent erroneous data from being written to the device from an out of tolerance system. When VCC falls below VSO, the
device automatically switches from battery to VCC at VSO and recognizes inputs.
3.
Oscillator enable/disable
Oscillator and time count chain can be enabled or disabled at the same time by ST bit.
4.
Calibration function
With the calibration bits properly set, accuracy PT7C4311 can be improved to better than ±2 ppm at 25°C.
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