Diodes Incorporated
Back to Inactve Datasheet Archive

PT7C4363B (Obsolete)

Real Time Clock (I2C)

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The PT7C4363B serial real-time clock is a low-power clock/calendar with a programmable square-wave output.


  • Supports High-ESR Crystals Up To 100kΩ
  • Using external 32.768kHz quartz crystal 
  • Supports I2C-Bus's high speed mode (400 kHz) 
  • Includes time (Hour/Minute/Second) and calendar (Year/Month/Date/Day) counter functions (BCD code)
  • Programmable square wave output signal


  • Networking switch
  • Smart home appliance

Product Specifications

Product Parameters

Alarm Interrupt 1
Battery Backup 0
Clock Calibration 0
Compliance(Only Automotive supports PPAP) Standard
Interface I2C
NV Ram N/A
Time Display 24

Technical Documents

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2651 2023-11-13 2023-11-13 Qualified Additional Fab Source, Assembly Test Sites, Die Revision, BOM, Datasheet, Tape and Reel Packing Quantity.
PCN-2642 2023-09-05 2024-03-05 Device End of Life (EOL)
PCN-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change


Related Application FAQs