DS9034PCX

Overview

The DS9034PCX is a Y2K-compliant real-time clock/calendar and nonvolatile static RAM integrated circuit. It combines an RTC, 8k x 8 NV SRAM, crystal, power-fail control circuit, and lithium energy source in a single PowerCap module package. The device features a bytewide interface for register access, automatic leap year compensation valid through 2099, and low-battery-voltage indicators. It operates with a standard JEDEC pinout compatible with other densities in the DS174XP series.

Feature Summary

• Integrates real-time clock, calendar, and nonvolatile SRAM with automatic leap year correction
• Includes built-in crystal oscillator and lithium battery energy source
• Provides power-fail write protection and low-battery voltage status flag
• Offers surface-mountable PowerCap module package for direct board connection

Applications

• Data logging systems requiring time-stamped memory retention
• Industrial controllers needing Y2K-compliant timekeeping
• Embedded devices with limited board space for discrete components
• Battery-backed backup power applications

Procurement Notes

Verify component authenticity due to discontinued status. Confirm package integrity as the PowerCap module contains internal lithium battery and crystal elements. Check datasheet revisions for specific operating temperature ranges and voltage tolerances. Ensure compatibility with existing JEDEC pinout designs if replacing older DS174XP variants. Validate supply chain sources for genuine Analog Devices or Maxim Integrated products.

Selection Notes

Select this component when a compact solution combining RTC, NVSRAM, and power management is required. It eliminates the need for external crystals and batteries. Consider the PowerCap module form factor for surface-mount assembly. Verify that the bytewide interface matches system bus requirements. Ensure the 8k x 8 capacity meets data storage needs alongside timekeeping functions.

Part Context

The DS9034PCX belongs to the DS174XP family of Y2K-compliant real-time clocks and nonvolatile RAMs. It is manufactured by Analog Devices Inc./Maxim Integrated, formerly Dallas Semiconductor. The part represents a consolidated solution for timekeeping and data retention, integrating multiple passive and active components into a single surface-mountable module to simplify PCB design and reduce component count.

Replacement Considerations

Pin-for-pin compatible with other densities in the DS174XP series. Verify functional equivalence if substituting with different NVSRAM capacities within the same family.