The DS1558W+TRL from Maxim Integrated is a cutting-edge memory and timekeeping solution designed for applications requiring accurate timekeeping coupled with a nonvolatile memory storage capability. This product integrates a full-function, binary-coded decimal (BCD) clock/calendar, 256 bytes of nonvolatile static RAM, and a power-fail control circuit, all in a single package.

Key Features

• Integrated Timekeeping Function: The device includes a highly accurate real-time clock/calendar that tracks time in hours, minutes, and seconds. The calendar functionality accounts for days, weeks, months, and years, including corrections for leap years.
• Nonvolatile RAM: With 256 bytes of nonvolatile static RAM, the DS1558W+TRL ensures data retention without the need for a battery backup in the event of a power failure.
• Automatic Power-Fail Chip De-Select and Write-Protection: These features safeguard the memory contents and real-time clock/calendar against power supply variations or failures.
• Low Power Consumption: Designed for energy efficiency, the device operates with minimal power, making it suitable for battery-powered applications.
• Watchdog Timer: An integrated watchdog timer provides a reliable system reset.
• Programmable Alarm: Users can set an alarm that can be programmed to trigger on a specific minute, hour, day, or date, providing versatile scheduling capabilities for time-sensitive applications.

Applications

The DS1558W+TRL is ideal for a wide array of applications, such as:

• Embedded systems requiring robust timekeeping
• Industrial systems with data logging needs
• Utility meters
• Security systems
• Network routers, hubs, switches, and bridges

Technical Specifications

• Package: The device comes in a 28-pin EDIP (300 mil) package, offering a compact footprint for space-constrained applications.
• Operating Temperature: It operates over an industrial temperature range, ensuring reliability and performance under extreme conditions.
• Supply Voltage: The DS1558W+TRL is designed to operate at 3.3V ±10%, accommodating common system power supplies.

The DS1558W+TRL from Maxim Integrated represents a reliable and versatile choice for maintaining accurate time and data integrity across various applications, delivering both performance and convenience in a single integrated package.