PT7C43190WE

Real Time Clock Overview

The PT7C43190 is a Real-time Clock (RTC) module manufactured by Diodes Incorporated. It operates on a 3-wire serial bus interface with burst mode support, utilizing CS, SCK, and SIO pins. The device supports both 12-hour and 24-hour time formats and includes alarm interrupt capabilities. It features a programmable square wave output selectable at 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, or 32kHz. The IC provides clock calibration functionality and integrates power-on detection and low voltage detection circuits. Recommended operating conditions specify a supply voltage range of 1.35V to 5.5V and an operating temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• 3-wire serial bus interface with burst mode communication
• Programmable square wave output (1Hz, 2Hz, 4Hz, 8Hz, 16Hz, 32kHz)
• Clock calibration function for frequency adjustment
• Integrated power-on detector and low power supply voltage detector

Real Time Clock Applications

• Real-time clock modules requiring low standby current
• Systems needing precise timekeeping with calibration capabilities
• Alarm-based interrupt systems in embedded controllers

Real Time Clock Procurement Notes

Verify the specific package type and ordering suffix against the manufacturer's official documentation before procurement. Confirm that the component meets RoHS 3 compliance requirements if applicable to the target assembly process. Ensure the selected variant matches the required pin configuration and electrical specifications for the intended application environment.

Real Time Clock Selection Notes

Select this component when a 3-wire serial interface is preferred over I2C or SPI protocols. The PT7C43190 is suitable for applications requiring hardware-level clock calibration to compensate for crystal aging or environmental drift. Designers must account for the open-drain nature of the INT and SIO pins, ensuring appropriate pull-up resistors are included in the circuit design.

Real Time Clock Part Context

The PT7C43190 belongs to the family of real-time clock modules produced by Diodes Incorporated. It serves as a dedicated timing solution for microcontroller-based systems, providing calendar and time-keeping functions independent of the main processor. The device simplifies system design by integrating necessary control logic and oscillators into a single compact package.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult the manufacturer's official documentation for potential cross-references or updated product line replacements.