STMicroelectronics M48T58-70PC1 Timekeeper SRAM

The M48T58-70PC1 is a 64 Kbit (8Kb x 8) TIMEKEEPER<sup>® SRAM with a built-in 32.768 kHz oscillator (external crystal controlled), and an integrated lithium energy source. This product is designed by STMicroelectronics, a global semiconductor leader known for its innovative approach in microelectronics.

This highly integrated battery-backed SRAM is particularly suitable for applications requiring memory and a real-time clock in a compact space. The device ensures reliable data and clock functionality without the need for an additional power source, making it an ideal solution for maintaining system time and configuration settings in the event of a primary power failure.

The M48T58-70PC1 operates at a voltage range of 4.5V to 5.5V and is characterized for operating at a temperature range of 0°C to 70°C, making it suitable for a wide array of commercial applications. Its access time of 70ns allows for rapid data retrieval, thereby enhancing overall system performance.

Key features of the M48T58-70PC1 include:

• Integrated, ultra-low power SRAM, real-time clock, power-fail control circuit, and battery
• BYTEWIDE<sup>® RAM-like clock access
• BCD coded year, month, day, date, hours, minutes, and seconds
• Automatic power-fail chip deselect and write protection
• Self-contained battery and crystal in the encapsulated package
• More than 10 years of data retention and clock functionality in the absence of power

The encapsulation of the M48T58-70PC1 ensures long-term reliability of the internal battery and crystal, which is critical for maintaining data integrity and accurate timekeeping. This product is packaged in a 28-pin, 600 mil DIP, making it easy to integrate into various system designs.

Applications for the M48T58-70PC1 are diverse and include, but are not limited to, telecommunications, industrial systems, security systems, and embedded electronics that require a dependable time base, data storage, and a backup power source.

Overall, the M48T58-70PC1 from STMicroelectronics is a robust, reliable, and essential component for systems where maintaining accurate time and data integrity is crucial, even in the absence of primary power.