Diodes Incorporated
Back to Real Time Clock (RTC)

PT7C433833A (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

Real Time Clock (I2C)

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Description

The PT7C433833A is a low-power clock/calendar with a programmable square-wave output and 56 bytes of nonvolatile RAM.

Address and data are transferred serially via a 2-wire, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month 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. PT7C4338eeA has a built-in power sense circuit that detects power failures and automatically switches to the battery supply.

Feature(s)

  • Accuate calendar and time keeping
  • Programmable square wave output
  • Built in 56 bytesof NVRAM
  • Easy I2C interface
  • Automatic power switch to backup battery

Application(s)

  • Networking switch, smart home appliance

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Time Display 12, 24
NV Ram 56x8
Interface I2C
Alarm Interrupt 0
Battery Backup 1
Clock Calibration 0

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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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