STMicroelectronics M48T35-70PC1 Timekeeper SRAM

The M48T35-70PC1 is a high-quality, 256 Kbit (32K x 8) Timekeeper SRAM designed and manufactured by STMicroelectronics. This integrated device combines a versatile 32K x 8 static RAM with a 32.768 kHz clock oscillator, making it a perfect solution for systems that require a reliable non-volatile memory with an integrated real-time clock (RTC).

One of the key features of the M48T35-70PC1 is its self-contained battery and crystal within the encapsulated package, which ensures that timekeeping and RAM retention are maintained for over 10 years in the absence of external power. This makes it an excellent choice for applications where long-term data and time retention are critical, such as in industrial control systems, security systems, and network servers.

The device operates on a single 5V supply and offers fast access time of 70ns, which allows for quick data retrieval and storage, making it suitable for high-speed microprocessor systems. Additionally, the M48T35-70PC1 is designed with a BYTE WRITE feature that enables byte-wise data storage, which is particularly useful for systems that require frequent updates to small amounts of data.

The integrated RTC of the M48T35-70PC1 provides a full complement of timekeeping features including seconds, minutes, hours, day, date, month, and year, with automatic leap year compensation up to the year 2100. It also includes an alarm function that can be programmed to signal interrupts at specific times, adding to its versatility in system design.

The device is housed in a 28-pin, 600 mil DIP (Dual In-line Package) which is compatible with standard sockets, making it easy to integrate into existing designs without the need for additional hardware. The M48T35-70PC1 is also recognized for its reliability and low power consumption, making it a sustainable choice for battery-powered applications.

In summary, the STMicroelectronics M48T35-70PC1 Timekeeper SRAM is a robust, non-volatile memory solution with integrated real-time clock functionality, designed for applications that demand reliable data and time retention without the need for an external power source.