DS1307ZN overview
DS1307ZN is a component documented by Dallas Semiconductor. The PDF description identifies it as "64 X 8 Serial Real Time Clock." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.
Datasheet snapshot
- Manufacturer: Dallas Semiconductor
- Part number: DS1307ZN
- Category: IC
- Datasheet length: 11 Pages
Specifications and operating details
The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.
- Inputs to the device will not be recognized at this time to prevent erroneous data from being written to the device from an out of tolerance system.
- Upon power up, the device switches from battery to VCC when VCC is greater than VBAT +0.2V and recognizes inputs when VCC is greater than 1.25 x V BAT.
- As V CC falls below VBAT the RAM and timekeeper are switched over to the external power supply (nominal 3.0V DC) at VBAT.
- SQW/OUT (Square Wave/ Output Driver) - When enabled, the SQWE bit set to 1, the SQW/OUT pin outputs one of four square wave frequencies (1 Hz, 4 kHz, 8 kHz, 32 kHz).
- X1, X2 - Connections for a standard 32.768 kHz quartz crystal.
- The internal oscillator circuitry is designed for operation with a crystal having a specified load capacitance (CL) of 12.5 pF.
- For more information on crystal selection and crystal layout considerations, please consult Application Note 58, “Crystal Considerations with Dallas Real Time Clocks.” The DS1307 can also be driven by an external 32.768 kHz oscillator.
Topics covered by the datasheet
The document includes sections related to:
- FEATURES
- ORDERING INFORMATION
- DESCRIPTION
Engineering review checklist
- Confirm the exact ordering code, package, pinout or terminal arrangement and document revision.
- Compare recommended operating conditions with absolute maximum ratings and retain adequate design margin.
- Validate electrical, thermal, mechanical and environmental behavior in the final application.
Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.
View the complete PDF and model record
Open the DS1307ZN datasheet and model details to review the complete PDF, document pages and available product information.
Source attribution
Adapted from the PDF associated with this DigiCamel model page.
Source model URL: https://www.digicamel.com/product.php?slug=ds1307zn-dallas-semiconductor