DS1254WB2-150

Overview

The DS1254WB2-150 is a Real Time Clock (RTC) and Non-Volatile SRAM device manufactured by Analog Devices Inc./Maxim Integrated. It integrates a phantom clock mechanism for timekeeping without an external crystal. The component features 2MB (2M x 8) of NVSRAM storage and supports parallel interface communication. It operates within a supply voltage range of 3V to 3.7V, with a maximum timekeeping current of 7mA at 3.3V. The device is housed in an 80-BBGA package (40x40 mm) and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated Phantom Clock for crystal-less timekeeping
• 2MB (2M x 8) Non-Volatile SRAM capacity
• Parallel bus interface for data access
• Supports Leap Year correction and Y2K compliance

Applications

• Industrial systems requiring persistent time and data logging
• Embedded controllers needing non-volatile memory with real-time tracking
• Automotive electronics operating within standard commercial temperature ranges

Procurement Notes

Verify the specific suffix WB2-150 against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure the 80-BBGA package dimensions align with the target PCB footprint. Confirm RoHS status and end-of-life status directly with the supplier or manufacturer before procurement planning.

Selection Notes

Select this component when a high-capacity NVSRAM solution with integrated timekeeping is required without the complexity of external oscillator circuits. The parallel interface necessitates sufficient microcontroller GPIOs or address/data buses. Verify that the 3V to 3.7V supply range matches the system power architecture and that the 0°C to +70°C temperature range meets environmental requirements.

Part Context

This part belongs to the Maxim Integrated DS1254 series of RTC/NVRAM devices. These components are designed to provide both real-time clock functionality and substantial non-volatile memory storage in a single package, simplifying board design for applications requiring robust data retention and accurate time tracking.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices/Maxim Integrated technical support for direct replacements or cross-reference options based on specific interface and memory requirements.