PT7C43190AWEX

Real Time Clock Overview

The PT7C43190 is a Real-time Clock Module manufactured by Diodes Incorporated. It features a 3-wire serial interface with burst mode support and operates within a supply voltage range of 1.35 V to 5.5 V. The device supports both 12-hour and 24-hour time formats, utilizing an external 32.768 kHz crystal oscillator. Key electrical parameters include a typical current consumption of 0.3 µA at 3.0 V during non-communication states and an operating temperature range of -40°C to +85°C. The IC includes clock calibration capabilities, power-on detection, and low power supply voltage detection circuits.

Real Time Clock Feature Summary

• Supports 12-hour and 24-hour time display formats with calendar counters.
• Features a 3-wire serial bus interface (SCK, SIO, CS) with burst mode capability.
• Includes programmable square wave output options: 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, and 32kHz.
• Provides two independent alarm interrupts and per-minute edge interrupt outputs via the INT pin.

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping.
• Data logging equipment needing long-term battery backup.
• Smart meters and utility devices with low power constraints.

Real Time Clock Procurement Notes

Verify the specific ordering suffix for package type and tape/reel configuration against the manufacturer's official documentation. Confirm RoHS compliance status and lead-free definitions as specified in the product datasheet before finalizing procurement orders.

Real Time Clock Selection Notes

Select this component when a 3-wire serial interface is preferred over I2C or SPI protocols. Ensure the design accommodates the required external 32.768 kHz crystal and load capacitors, considering the internal built-in capacitance specifications for accurate frequency tuning.

Real Time Clock Part Context

This part belongs to the PT7C43190 series of real-time clock modules from Diodes Incorporated. It is designed for applications requiring robust timekeeping with minimal power consumption and flexible interrupt management through its dedicated alarm and timer functions.

Real Time Clock Replacement Considerations

No public confirmed substitute part numbers are available in the provided source material. Evaluate alternatives based on interface compatibility (3-wire serial), voltage range, and package dimensions if substitution is necessary.

Real Time Clock FAQ

What is the communication interface protocol for the PT7C43190?

The PT7C43190 uses a 3-wire serial bus interface consisting of SCK (Serial Clock), SIO (Serial Data I/O), and CS (Chip Select) pins, supporting burst mode data transfer.

Can the PT7C43190 operate in both 12-hour and 24-hour modes?

Yes, the device supports both 12-hour and 24-hour time display formats, which can be selected via the Status Register 1.

What are the available programmable square wave output frequencies?

The INT pin can be configured to output square waves at frequencies of 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, or 32kHz.