CDP68HC68T1M2Z

Overview

The CDP68HC68T1M2Z is a Real-Time Clock (RTC) IC manufactured by Renesas Electronics Corporation. It integrates a clock/calendar function with 32 bytes of static RAM and utilizes a 3-wire Serial Peripheral Interface (SPI). The device supports voltage supplies from 3V to 6V for main operation and 2.2V to 6V for battery backup. Key electrical parameters include a standby current ranging from 20µA to 500µA at 5V, depending on configuration. It operates within a temperature range of -40°C to 85°C and is housed in a 20-SOIC package.

Feature Summary

• Integrated SPI interface for serial communication
• 32-byte static RAM for data storage
• Automatic leap year compensation
• Programmable alarm and periodic interrupt modes

Applications

• Systems requiring precise timekeeping and calendar functions
• Data logging applications utilizing the integrated RAM
• Embedded devices with SPI bus connectivity

Procurement Notes

Verify component status as the base model CDP68HC68T1 has been reported as End-of-Life (EOL) in public records. Confirm availability and lead times directly with authorized distributors or Renesas Electronics. Ensure the specific suffix T1M2Z matches required packaging and revision specifications before ordering.

Selection Notes

Select this component when an SPI-based RTC with onboard memory is required. Verify that the system power supply falls within the 3V-6V operating range. Check compatibility with the 20-SOIC footprint. Consider alternative models if the base series is discontinued or if lower standby currents are strictly necessary beyond the specified 20µA minimum.

Part Context

This part belongs to the CDP68HC68 family of real-time clocks. The 'T1' designation typically refers to the specific variant with SPI interface and certain feature sets. The 'MZ' suffix indicates the 20-SOIC package and RoHS compliance. Public documentation often references the broader CDP68HC68T1 series.

Replacement Considerations

Public records indicate the CDP68HC68T1 series has reached End-of-Life. Potential replacements must be sourced from Renesas's current portfolio or verified cross-reference lists. Ensure any substitute maintains SPI compatibility and similar pinout configurations.