Futurlec - The Electronic Components and Semiconductor Superstore
View Cart

DS1307 Real Time Clock Datasheet - Buy DS1307

DS1307 Dallas Semiconductor Real Time Clock IC


arrowReal-time clock counts seconds, minutes, hours, date, month, day, year, and leap year to 2100

arrow56-bytes general-purpose NV RAM

arrowAccuracy >2 minutes/month at 25°C

arrowAutomatic Power Management Circuitry

arrow2-wire Serial Interface

arrowProgrammable Square Wave Output Signal

arrowUses <300nA in backup mode with oscillator running

Pin Layout
DS1307 Dallas Semiconductor IC Pin Layout

Pin Description
Pin Number Description
1 X1 - 32.768kHz Crystal Connection
2 X2 - 32.768kHz Crystal Connection
3 Vbat - +3V Battery Input
4 GND - Ground
5 SDA - Serial Data
6 SCLK - Serial Clock
7 SQW/OUT - Squarewave Output
8 Vcc - Primary Power Supply

Dimensional Drawing
DS1307 DIP8 Dimension Drawing
DS1307 DIP8 Dimension Drawing