DS1307
64 x 8, Serial, I²C Real-Time Clock
- Part Models
- 6
- 1ku List Price
- Starting From $2.25
Overview
- Completely Manages All Timekeeping Functions
- Real-Time Clock 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, General-Purpose RAM with Unlimited Writes
- Programmable Square-Wave Output Signal
- Simple Serial Port Interfaces to Most Microcontrollers
- I2C Serial Interface
- Low Power Operation Extends Battery Backup Run Time
- Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
- Automatic Power-Fail Detect and Switch Circuitry
- 8-Pin DIP and 8-Pin SO Minimizes Required Space
- Optional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications
- Underwriters Laboratories® (UL) Recognized
The DS1307 serial real-time clock (RTC) 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 DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.
Documentation
Data Sheet 1
Reliability Data 1
Design Note 6
Technical Articles 5
3rd Party Solutions 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1307+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| DS1307N+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| DS1307Z+ | Small-Outline IC, Narrow (0.15in) | ||
| DS1307Z+T&R | Small-Outline IC, Narrow (0.15in) | ||
| DS1307ZN+ | Small-Outline IC, Narrow (0.15in) | ||
| DS1307ZN+T&R | Small-Outline IC, Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Nov 9, 2018 - 1702C ASSEMBLY |
||
| DS1307Z+ | PRODUCTION | |
| DS1307Z+T&R | PRODUCTION | |
| DS1307ZN+ | PRODUCTION | |
| DS1307ZN+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.