PT7C4563BQ1WEX

Real Time Clock Overview

The PT7C4563BQ1WEX is an automotive-grade real-time clock (RTC) IC from Diodes Incorporated, designed for precise timekeeping in vehicle systems. It operates on a 32.768kHz crystal oscillator and supports I²C/SMBus communication with a supply voltage range of 1.3V to 5.5V. The device provides alarm interrupts, programmable square wave outputs, and oscillator fail detection. It is qualified under AEC-Q100 standards and housed in an 8-pin SOIC package.

Real Time Clock Feature Summary

• AEC-Q100 Grade 1 qualified for automotive reliability
• I²C/SMBus interface supporting up to 400kHz clock frequency
• Programmable square wave output at 32.768k, 1.024k, 32, or 1Hz
• Built-in oscillator fail detect and alarm interrupt functionality

Real Time Clock Applications

• Automotive infotainment systems
• Vehicle telematics units
• Electronic control modules requiring persistent timekeeping

Real Time Clock Procurement Notes

Verify the part number suffix '1WEX' corresponds to the specific tape-and-reel packaging and AEC-Q100 Grade 1 qualification as defined by Diodes Incorporated. Confirm that the component meets RoHS 3 compliance requirements for the intended manufacturing process.

Real Time Clock Selection Notes

Select this component when an automotive-qualified RTC with low power consumption and I²C connectivity is required. Ensure the system design accommodates the 1.3V to 5.5V operating voltage range and includes external pull-up resistors for the SDA and SCL lines.

Real Time Clock Part Context

This part belongs to the PT7C4563 series of real-time clocks. The 'BQ' designation indicates automotive compliance, while '1' specifies AEC-Q100 Grade 1 temperature rating. The 'WEX' suffix denotes the 8-pin SOIC package with tape-and-reel shipping configuration.

Real Time Clock Replacement Considerations

Direct pin-to-pin replacements within the same family include PT7C4563BQ1WE. Other compatible parts may exist but require verification of electrical characteristics and package dimensions against the original specification.