STMicroelectronics M48Z08-100PC1 RTC with 8KB SRAM, DIP-28 Package

STMicroelectronics M48Z08-100PC1 Real-Time Clock IC Overview

The STMicroelectronics M48Z08-100PC1 is a robust integrated circuit combining a real-time clock (RTC) with 8KB static random-access memory (SRAM). This dual-function device is engineered to deliver consistent performance in demanding electronic systems, providing both accurate time tracking and reliable data storage capabilities.

As a product from STMicroelectronics, a leader in semiconductor innovation, it meets strict quality standards for industrial and commercial applications. For a comprehensive range of similar components, visit IC Manufacturer.

Technical Parameters of M48Z08-100PC1

Technical Features of M48Z08-100PC1

• Non-volatile memory retention during power loss, preserving critical data and time information
• Low current consumption in standby mode, extending battery life in portable applications
• Binary-coded decimal (BCD) time format for easy interface with microprocessors
• Automatic leap year compensation, ensuring accurate date tracking through century transitions
• Hardware and software write protection, preventing accidental data modification

Advantages Over Alternative Solutions

Compared to separate RTC and SRAM components, the M48Z08-100PC1 reduces system complexity by integrating both functions into a single device. This integration lowers component count, reduces PCB space requirements, and minimizes power consumption-critical factors in compact electronic designs.

Its 100ns access time outperforms many competing integrated solutions, ensuring faster data retrieval that enhances system responsiveness. The wide operating voltage range (3V-5.5V) provides greater design flexibility than devices limited to narrow voltage windows, eliminating the need for additional voltage regulation in mixed-power systems.

Unlike some alternatives, the M48Z08-100PC1 maintains full functionality across the -40??C to +85??C temperature range, making it more reliable in extreme environments where lesser components might fail.

Typical Applications

The M48Z08-100PC1 excels in applications requiring synchronized timekeeping and data logging, including:

• Industrial control systems, where precise event timing ensures accurate process monitoring
• Security equipment, providing timestamped access records and alarm events
• Medical monitoring devices, maintaining accurate time stamps for patient data
• Networking hardware, synchronizing log entries across connected systems
• Energy management systems, tracking power consumption with precise timing

Frequently Asked Questions

How does the M48Z08-100PC1 retain data during power outages?

The device uses an internal lithium energy source that activates when main power is lost, preserving both SRAM data and real-time clock information. This ensures uninterrupted operation and data integrity even during extended power interruptions.

What makes the 100ns access time important for my application?

The 100ns access time represents how quickly the microprocessor can retrieve data from the SRAM. This speed ensures that time-critical operations aren??t delayed by memory access, maintaining system responsiveness in applications like industrial controllers where timing precision matters.

Can the M48Z08-100PC1 operate in automotive environments?

Yes, its wide temperature range (-40??C to +85??C) and robust design make it suitable for automotive applications. It can withstand the temperature fluctuations and electrical noise common in vehicle electronics systems.

How does the write protection feature work?

The M48Z08-100PC1 includes both hardware and software write protection. Hardware protection uses a dedicated pin, while software protection requires specific command sequences, preventing accidental data modification from electrical noise or software errors.

What is the benefit of the BCD time format?

BCD format stores time values as binary-coded decimals, making it easier to convert to human-readable formats without complex software calculations. This simplifies interface design with microprocessors and reduces code complexity in time-display applications.