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串行实时时钟DS1307--IIC接口


FEATURES
 Real-time clock (RTC) counts seconds,
minutes, hours, date of the month, month, day
of the week, and year with leap-year
compensation valid up to 2100
 56-byte, battery-backed, nonvolatile (NV)
RAM for data storage
 Two-wire serial interface
 Programmable squarewave output signal
 Automatic power-fail detect and switch
circuitry
 Consumes less than 500nA in battery backup
mode with oscillator running
 Optional industrial temperature range:
-40°C to +85°C
 Available in 8-pin DIP or SOIC
 Underwriters Laboratory (UL) recognized
ORDERING INFORMATION
DS1307 8-Pin DIP (300-mil)
DS1307Z 8-Pin SOIC (150-mil)
DS1307N 8-Pin DIP (Industrial)
DS1307ZN 8-Pin SOIC (Industrial)

DESCRIPTION
The DS1307 Serial Real-Time Clock is a low-power, full binary-coded decimal (BCD) clock/calendar
plus 56 bytes of NV SRAM. Address and data are transferred serially via a 2-wire, bi-directional bus.
The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of
the month date is automatically adjusted for months with fewer than 31 days, including corrections for
leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The
DS1307 has a built-in power sense circuit that detects power failures and automatically switches to the
battery supply.

生产厂商:Dallas 半导体

datasheet:
DS1307.pdf
下载: pdf 文件
 


 
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