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Dallas
DS1307 Real Time Clock Datasheet
Photograph
Features
- Real-time clock counts seconds, minutes, hours, date, month, day, year, and leap year to 2100
- 56-bytes general-purpose NV RAM
- Accuracy >2 minutes/month at 25°C
- Automatic Power Management Circuitry
- 2-wire Serial Interface
- Programmable Square Wave Output Signal
- Uses <300nA in backup mode with oscillator running
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
