This document introduces the features and characteristics of the M48T251Y and M48T251V products, including operating voltage, real-time clock, automatic switch-over and deselect circuit, battery fail deselect voltage, full 10% VCC operating range, more than 10 years of data retention, clock function is transparent, and 512K x 8 NV SRAM directly replaces volatile static RAM or EEPROM.
The document describes the M48T251Y and M48T251V, which are 512K x 8 bit non-volatile static RAMs featuring an integrated real-time clock (RTC) and battery backup. These devices operate at either 3.0V to 3.6V or 4.5V to 5.5V and retain data for over 10 years without power.
| Operating Voltage (M48T251Y) | 4.5V to 5.5V |
|---|---|
| Operating Voltage (M48T251V) | 3.0V to 3.6V |
| Data Retention | Over 10 years |
| Package Type | 32-pin DIP |
Yes, it includes automatic leap year correction valid up to the year 2100.
The range is between 4.25V and 4.50V.
Yes, it operates in either a 12-hour mode with an AM/PM indicator or a 24-hour mode.