M48T02-70PC1

Real Time Clock Overview

The M48T02-70PC1 is a 5.0V, 16 Kbit (2K x 8) non-volatile static RAM and real-time clock manufactured by STMicroelectronics. It features a 70ns access time and operates within a voltage range of 4.75V to 5.5V. The device integrates 2048 bytes of SRAM with the last 8 bytes dedicated to RTC registers. It utilizes a parallel interface and is housed in a 24-pin PCDIP package. The component supports date formats including YY-MM-DD and time formats HH:MM:SS, maintaining data retention via an external battery connection.

Real Time Clock Feature Summary

• Integrates non-volatile SRAM memory with dedicated real-time clock functionality for precise timekeeping.
• Provides fast 70ns parallel access times for efficient data retrieval and system integration.
• Maintains data integrity through battery-backed power supply ensuring non-volatility.

Real Time Clock Applications

• Industrial control systems requiring persistent time and data storage
• Embedded devices needing accurate real-time clock tracking
• Telecommunications equipment with memory retention requirements

Real Time Clock Procurement Notes

Verify the specific ordering suffix and package variant against official STMicroelectronics documentation to ensure compatibility with design specifications. Confirm that the parallel interface and pinout align with the target PCB layout. Ensure the operating voltage range matches the system power supply constraints before finalizing procurement.

Real Time Clock Selection Notes

Select this component when a combined solution for non-volatile memory and real-time clocking is required in a single package. The 2K x 8 configuration offers sufficient storage for small datasets while the integrated RTC eliminates the need for separate timing circuits. Consider the 24-pin PCDIP package for through-hole mounting applications where space allows.

Real Time Clock Part Context

This part belongs to the TIMEKEEPER SRAM family, designed for applications requiring both data retention and accurate timekeeping. It is functionally compatible with other members of the M48T series, offering a standardized interface for developers integrating time-sensitive operations into embedded systems without complex external timing components.

Real Time Clock Replacement Considerations

The M48T12-70PC1 serves as a functional substitute within the same series, offering similar interface characteristics and timekeeping capabilities. Verify pin compatibility and memory size differences when considering alternative parts from the M48T family for direct replacement scenarios.