DS1307Z データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1307Z Datasheet PDF : 12 Pages
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www.maxim-ic.com
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)
DS1307
64 x 8 Serial Real-Time Clock
PIN ASSIGNMENT
X1 l
8 VCC
X2 2 7 SQW/OUT
VBAT 3 6 SCL
GND 4 5 SDA
DS1307 8-Pin DIP (300-mil)
X1 l
8 VCC
X2 2 7 SQW/OUT
VBAT 3 6 SCL
GND 4 5 SDA
DS1307 8-Pin SOIC (150-mil)
PIN DESCRIPTION
VCC
X1, X2
- Primary Power Supply
- 32.768kHz Crystal Connection
VBAT
GND
- +3V Battery Input
- Ground
SDA
- Serial Data
SCL
- Serial Clock
SQW/OUT - Square Wave/Output Driver
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.
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