CDP68HC68T1M2

Overview

The CDP68HC68T1MZ is a Real-Time Clock (RTC) IC manufactured by Renesas Electronics Corporation. It integrates clock/calendar functionality with 32 bytes of static RAM and utilizes a 3-wire SPI interface for communication. The device supports power supply voltages from 3V to 6V and battery input voltages ranging from 2.2V to 6V. It operates within a temperature range of -40°C to 85°C and features low standby current consumption, typically between 20µA and 500µA at 5V. The component is housed in a 20-SOIC package.

Feature Summary

• Provides timekeeping functions including seconds, minutes, hours, day of week, date, month, and year with automatic leap year adjustment.
• Integrates 32 bytes of static RAM accessible via the Serial Peripheral Interface (SPI).
• Includes alarm capabilities, periodic interrupts, and power-fail detection features.

Applications

• Computer systems requiring precise time synchronization
• Data logging equipment needing calendar tracking
• Industrial control systems with RTC requirements

Procurement Notes

Verify the exact part number suffix, as the provided model contains 'M2' while official records list 'MZ'. Confirm RoHS compliance status and check for End-of-Life notices, as the related CDP68HC68T1 series has been discontinued. Ensure the ordering information matches the specific manufacturer documentation before proceeding.

Selection Notes

Select this component when an SPI-based real-time clock with integrated memory is required. Consider the operating voltage range and temperature specifications to ensure compatibility with the target system environment. Verify that the 20-SOIC package fits the available board space and that the SPI interface aligns with the host controller's capabilities.

Part Context

This component belongs to the CDP68HC68 family of real-time clocks produced by Renesas Electronics. It serves as a specialized timing solution for embedded applications, combining timekeeping logic with non-volatile data storage. The device is designed to maintain accurate timekeeping even during primary power failures using a backup battery source.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The related CDP68HC68T1 series has been marked as discontinued; verify current availability and potential obsolescence risks before finalizing design decisions.