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Analog Devices Inc./Maxim Integrated DS1248WP-120IND Environmental and export classification status description

- Product Type: Non-volatile SRAM with Real-Time Clock (RTC) - Memory Type: 32K x 8 SRAM - Non-volatile Functionality: Maintains data in the presence of power loss via an integrated lithium battery. - Package Type: 28-PDIP, 28-SOIC - Operating Voltage: Typically 2V-5.5V - Temperature Range: Industrial (typically from -40°C to +85°C) Functions: 1. Data Retention: Maintains data for an extended time when powered off, thanks to the SRAM's non-volatile feature. 2. Real-Time Clock (RTC): Keeps track of the current time and date, providing functionalities for time-stamping and real-time applications. 3. SRAM Write/Read Operations: Allows standard SRAM operations for reading and writing data quickly. 4. Automatic Power Switching: Automatically switches to the backup battery when Vcc drops below a certain threshold. 5. Easy Interface: Can be interfaced with standard microcontrollers and other digital circuits via standard SRAM interfaces (data and address lines). Applications: - Consumer Electronics: Used in devices needing non-volatile memory and RTC such as smart appliances. - Industrial Equipment: Suitable for devices that require data logging, control systems, and monitoring. - Automotive Systems: Memory storage for critical data that needs to be retained during power loss. - Embedded Systems: Used in various embedded projects that require a combination of memory and timekeeping. - Networking Equipment: For configuration storage and logging events with time stamps. Alternative Components: - M41T00: A real-time clock (RTC) with an integrated non-volatile SRAM. - DS1307: A real-time clock with I2C interface and external SRAM for extended storage. - AT24C32: EEPROM-based memory with lower density but more flexibility regarding write cycles, though it does not offer SRAM characteristics. - Dallas Semiconductor's DS1230: A non-volatile SRAM alternative with different functionalities. Embedded Modules: Embedded modules containing the DS1248WP-120IND or similar devices can be found in application development platforms, such as: - Arduino SRAM Modules: Some custom modules use similar non-volatile SRAM for storing variables when the power is disrupted. - Raspberry Pi RTC Modules: Can utilize similar concepts for timekeeping and data logging. Related Q&A: 1. Q: What is the primary advantage of using DS1248WP-120IND over standard volatile SRAM? A: The DS1248WP-120IND includes non-volatility, allowing data to be preserved even during power loss, which standard volatile SRAM cannot do. 2. Q: Can the RTC of the DS1248WP-120IND be used for time-stamping events? A: Yes, the built-in real-time clock can be utilized for time-stamping events in various applications, such as data logging. 3. Q: What type of power supply is recommended for the DS1248WP-120IND? A: The device can operate with voltages typically from 2V to 5.5V, so any regulated power source within this range is suitable. 4. Q: How is data written to and read from the DS1248WP-120IND? A: The DS1248WP-120IND utilizes standard SRAM interface protocols for memory access, similar to traditional SRAM devices. 5. Q: What happens when the main power fails and the backup battery is still functional? A: When the main power fails and the Vcc drops below a certain threshold, the device will automatically switch to battery power to continue maintaining memory contents. This overview provides a solid understanding of the DS1248WP-120IND and how it fits into the broader context of integrated circuits in memory applications.