PT7C4563BWEX

Real Time Clock Overview

The PT7C4563BWEX is a Real-time Clock (RTC) module manufactured by Diodes Incorporated, packaged in an 8-pin SOIC. It operates on a 2-wire I2C bus interface with a supply voltage range of 1.3V to 5.5V and supports an operating temperature from -40°C to +85°C. The device features BCD-coded time and calendar counters for seconds, minutes, hours, date, month, and year, including a century bit. It includes alarm functionality, oscillator fail detection, and a programmable square wave output selectable at 1Hz, 32Hz, 1.024kHz, or 32.768kHz.

Real Time Clock Feature Summary

• I2C Bus Interface: Supports standard 2-wire serial communication with SDA and SCL pins.
• BCD Counters: Provides timekeeping for seconds, minutes, hours, date, day of week, month, and year in Binary-Coded Decimal format.
• Alarm Functionality: Includes comparator registers for minute, hour, date, and weekday alarms with interrupt generation capabilities.
• Square Wave Output: Programmable SQW pin offering selectable frequencies of 1Hz, 32Hz, 1.024kHz, and 32.768kHz.

Real Time Clock Applications

• Embedded systems requiring precise timekeeping and calendar functions.
• Industrial control equipment needing low-power real-time clocking.
• Consumer electronics utilizing I2C-based microcontroller architectures.

Real Time Clock Procurement Notes

Verify component authenticity through authorized distributors as the datasheet indicates this part number may be obsolete or discontinued. Confirm package integrity and RoHS compliance status prior to integration. Ensure design reviews account for potential supply chain limitations associated with discontinued semiconductor products.

Real Time Clock Selection Notes

Select the PT7C4563BWEX when an 8-pin SOIC package is required for I2C RTC applications. Ensure the host system supports the 1.3V to 5.5V supply range and 400kHz I2C clock speeds. Verify that external crystal load capacitance requirements align with the built-in 12pF capacitors specified in the datasheet.

Real Time Clock Part Context

This component belongs to the PT7C4563B series of Real-time Clock Modules. It shares functional similarities with other variants such as PT7C4563CLEX and PT7C4563BQ1WEX, differing primarily in packaging options like TSSOP-8 or automotive-grade specifications. The 'W' suffix specifically denotes the 8-pin SOIC package configuration.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the datasheet marks the PT7C4563B as 'PART OBSOLETE - DISCONTINUED', alternative sourcing should focus on verifying stock availability or consulting manufacturer recommendations for end-of-life replacements.