Maxim Integrated DS1646P-120 Nonvolatile Timekeeping RAM

The DS1646P-120 is a robust, high-performance nonvolatile timekeeping RAM module designed by Maxim Integrated. This innovative product combines a full-featured, battery-backed real-time clock (RTC) with 128k x 8 nonvolatile static RAM. It is specifically engineered to maintain data integrity and accurate timekeeping in a wide array of applications, particularly in scenarios where reliable data storage and time information are critical, even in the event of a power failure.

At the core of the DS1646P-120 is a precision, temperature-compensated crystal oscillator, which ensures that the real-time clock maintains an accurate time over a broad temperature range. This oscillator, along with the integrated lithium energy source, guarantees a long-lasting and stable performance for the lifetime of the product. The RTC provides information on seconds, minutes, hours, day, date, month, and year, with automatic leap year compensation valid up to the year 2100.

The device's nonvolatile RAM offers 128k x 8 bits of storage, ensuring that critical data is preserved without the need for an external battery. The DS1646P-120 automatically switches from external power to its internal battery during a power-loss event, ensuring seamless transition and data integrity. The nonvolatile aspect of the memory means that data is retained for over 10 years in the absence of power.

Designed for easy integration into a wide range of systems, the DS1646P-120 comes in a power-dip package and operates over a temperature range of -40°C to +85°C. It also includes a write-protect feature that helps prevent inadvertent writes to the clock and memory, further securing the stored data. The device communicates with the host system via a simple multiplexed address and data bus, allowing for straightforward interfacing with most microprocessors.

Whether it's for telecommunications, embedded systems, industrial controls, or any other system that requires reliable timekeeping and data storage without power, the Maxim Integrated DS1646P-120 Nonvolatile Timekeeping RAM is an excellent choice, offering both durability and precision in a compact form factor.