CDP6818D

Overview

The CDP6818D is a Real Time Clock (RTC) integrated circuit manufactured by Harris Corporation. It provides clock and calendar functionality with a memory size of 50 bytes. The device supports time formats including HH:MM:SS in both 12-hour and 24-hour modes. Key features include an alarm function, leap year compensation, and a square wave output. It is housed in a 24-CDIP package with dimensions of 0.300 inches (7.62mm).

Feature Summary

• Integrated real-time clock and calendar functionality.
• Supports alarm generation and leap year compensation.
• Provides square wave output capability.

Applications

• Data logging systems requiring accurate time stamping.
• Industrial control equipment needing calendar tracking.
• Communication devices utilizing time synchronization.

Procurement Notes

Verify the specific manufacturer datasheet for the CDP6818D to confirm electrical characteristics and pinout compatibility before integration. Ensure the 24-CDIP package dimensions align with the target PCB layout. Confirm that the operating temperature range of 0°C to 70°C meets the environmental requirements of the intended application.

Selection Notes

Select this component when a dedicated RTC solution with built-in calendar logic and alarm features is required. The 50-byte memory capacity should be evaluated against data storage needs. Consider the through-hole mounting type and ceramic DIP package for applications where surface-mount alternatives are not suitable or where thermal robustness is prioritized.

Part Context

This part belongs to the family of real-time clock ICs produced by Harris Corporation. It serves as a standalone timing solution, eliminating the need for external oscillators or complex software routines for basic timekeeping. The device integrates necessary logic for maintaining accurate time and date information in embedded systems.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing system interfaces if considering alternative RTC components from other manufacturers.

FAQ

What time formats does the CDP6818D support?

The CDP6818D supports time formats in HH:MM:SS, compatible with both 12-hour and 24-hour configurations.

Does the CDP6818D include leap year correction?

Yes, the device includes hardware support for leap year compensation as part of its calendar functionality.