PT7C4563UEX

Real Time Clock Overview

The PT7C4563UEX is a Real-Time Clock (RTC) module manufactured by Diodes Incorporated. It provides timekeeping and calendar functions via an I2C bus interface, utilizing Binary Coded Decimal (BCD) formats for both date and time data. The device operates within a supply voltage range of 1.3 V to 5.5 V and supports a dedicated 3 V battery input for continuous operation during main power loss. Designed for surface-mount assembly, it is housed in a TSSOP-8 package and functions reliably across an industrial temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• I2C/SMBus compatible serial interface for system communication
• BCD format output for seconds, minutes, hours, date, month, and year
• Low current consumption of 1.5 µA at 5V during timer operation
• Integrated alarm function with programmable interrupt output

Real Time Clock Applications

• Industrial control systems requiring precise time synchronization
• Consumer electronics with battery-backed clock functionality
• Automotive infotainment and instrument clusters
• Data logging devices needing timestamp accuracy

Real Time Clock Procurement Notes

Verify the specific suffix 'U' against official Diodes Incorporated documentation to confirm exact tape-and-reel quantity and packaging specifications. Ensure compatibility with existing PCB footprints for the TSSOP-8 package. Confirm that the I2C address matches the target system design requirements before procurement.

Real Time Clock Selection Notes

Select this component when an I2C-connected RTC with low standby current is required. The 1.3V minimum operating voltage allows integration with low-voltage logic systems. The wide supply range up to 5.5V ensures compatibility with standard 5V microcontrollers. Verify that the BCD output format aligns with the host processor's decoding capabilities.

Real Time Clock Part Context

This part belongs to the PT7C4563C series of real-time clock modules from Diodes Incorporated. Variants within this family, such as the PT7C4563CLEX and PT7C4563BQ1WEX, share core functional specifications but differ in package types like SOIC or TSSOP and qualification standards. The UEX suffix typically denotes specific packaging and reel configurations for automated assembly.

Real Time Clock Replacement Considerations

Direct replacements include other parts from the PT7C4563 series, such as PT7C4563CLEX or PT7C4563BQ1WEX, provided the package footprint and pinout are compatible. Cross-model substitution requires verification of the specific suffix differences regarding packaging and electrical tolerances.