STMICROELECTRONICS M48T02 Timekeeper RAM 2Kb x 8 RTC IC, DIP-24, 24 Pins

The STMICROELECTRONICS M48T02-70PC1 is a TIMEKEEPER® RAM non-volatile static RAM and Real-time Clock (RTC) integrated circuit, providing a combined memory and timekeeping solution in a single DIP package. This IC integrates an ultralow power SRAM, a real-time clock, and a power-fail control circuit, ensuring reliable operation for a wide range of applications.

Designed with a 2Kb x 8 configuration, it offers RAM-like clock access, simplifying system integration. The embedded button cell has sufficient capacity and storage life to maintain data and clock functionality for an accumulated period of at least 10 years in the absence of power, across the full operating temperature range. It fits easily into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any special WRITE timing requirements or limitations on the number of writes.

Key Features

• Non-volatile SRAM with integrated power-fail control
• Real-time clock with typical accuracy of ±1 minute per month at 25°C
• Software-controlled clock calibration for high accuracy applications
• Automatic power-fail chip deselect and WRITE protection
• Parallel interface for easy integration

This RTC IC operates with a supply voltage range from 4.75V to 5.5V and is packaged in a 24-pin DIP (Dual In-line Package). With an operating temperature range of 0°C to 70°C, it is suitable for a variety of commercial applications. The device is ideal for systems requiring reliable, long-term timekeeping and data retention without the need for battery replacement.