Maxim Integrated DS1744WP-120IND+ Nonvolatile Timekeeping RAM

The DS1744WP-120IND+ is a robust, high-performance nonvolatile timekeeping RAM product designed by Maxim Integrated to meet the demanding needs of industrial applications. This integrated device combines a full-function, binary-coded decimal (BCD) clock/calendar, 512k NV SRAM, power-fail control circuit, and battery in a single 34-pin PowerCap Module (PCM). The module's unique design ensures that all data is retained in the event of a power loss, making it an ideal solution for critical data and real-time clock applications where reliability is paramount.

With a voltage range of 4.5V to 5.5V and an industrial temperature range of -40°C to +85°C, the DS1744WP-120IND+ is built to perform reliably in harsh environments. Its power-fail deselect voltage (VPFD) ensures that write operations are completed properly before the power supply drops below a safe threshold, thereby safeguarding data integrity during power transitions.

The device features a clock/calendar that is accurate to ±1 minute per month at 25°C, and it automatically adjusts for months with fewer than 31 days, including corrections for leap year. The clock operates in either 24-hour or 12-hour format with an AM/PM indicator. Additionally, the DS1744WP-120IND+ offers a programmable interrupt function, which can be set to a specific time or date, providing users with a flexible means to manage scheduled events or tasks.

Integration of the lithium energy source directly into the encapsulated module ensures a long battery life and makes the DS1744WP-120IND+ a maintenance-free solution. The device also features a redundant battery strap that allows for battery replacement without data loss, offering enhanced serviceability.

Designed with a JEDEC-standard pinout, the DS1744WP-120IND+ is easy to integrate into existing designs without the need for significant board modifications. This makes it an excellent choice for a wide range of applications, including embedded systems, utility meters, industrial controllers, and other systems that require reliable, long-term data retention and precise timekeeping.

Overall, the Maxim Integrated DS1744WP-120IND+ represents a highly reliable, versatile, and maintenance-free solution for timekeeping and data storage in critical industrial applications.