Product Summary

The DS1307N is a serial real-time clock (RTC). The DS1307N is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional 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 The DS1307N has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply.

Parametrics

DS1307N absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground: -0.5V to +7.0V; (2)Operating Temperature Range (Noncondensing); (3)Commercial: 0℃ to +70℃; Industrial: -40℃ to +85℃; (4)Storage Temperature Range: -55℃ to +125℃; (5)Soldering Temperature (DIP, leads): +260℃ for 10 seconds; (6)Soldering Temperature (surface mount): See JPC/JEDEC Standard J-STD-020.

Features

DS1307N features: (1)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; (2)56-Byte, Battery-Backed, Nonvolatile (NV) RAM for Data Storage; (3)I2C Serial Interface; (4)Programmable Square-Wave Output Signal; (5)Automatic Power-Fail Detect and Switch Circuitry; (6)Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running; (7)Optional Industrial Temperature Range: -40℃ to +85℃; (8)Available in 8-Pin Plastic DIP or SO; (9)Underwriters Laboratory (UL) Recognized.

Diagrams

DS1307N block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS1307N
DS1307N
Maxim Integrated Products
Real Time Clock 64x8 Serial I2C RTC
Data Sheet
0-6910: $1.49
DS1307N+
DS1307N+
Maxim Integrated Products
Real Time Clock 64x8 Serial I2C RTC
Data Sheet
0-1: $2.79
1-25: $1.87
25-50: $1.36
50-100: $1.34