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Rochester Electronics DS1248WP-120 Environmental and export classification status description

DS1248WP-120 The DS1248WP-120 is a CMOS real-time clock (RTC) and non-volatile RAM (NVRAM) device from Maxim Integrated (now part of Analog Devices), designed for applications that require long-term data retention, accurate time keeping, and low power consumption. The device includes a Real-Time Clock (RTC) function and 128K bits (16K x 8) of battery-backed static RAM that operates even in the absence of power. Functions 1. Real-Time Clock (RTC) Functionality: - Keeps track of time and date in BCD format. - Year, month, day, hour, minute, and second information. - Programmable alarm and timer features. 2. Non-volatile RAM: - 16K x 8 bits of NVRAM, which retains data after power loss. - Battery backup ensures data is preserved during power interruptions. 3. Low Power Consumption: - Designed for low power usage, making it suitable for battery-operated devices. 4. User-Configurable: - Adjustable features such as timekeeping frequency, alarm settings, and timeout periods. 5. Battery Management: - Built-in management for the battery to extend its life. Applications 1. Consumer Electronics: Digital clocks, remote controls, and computing devices. 2. Industrial Automation: Control systems requiring time-stamping of events. 3. Telecommunications: Equipment that needs precise time management. 4. Energy Monitoring Systems: For logging data related to energy consumption over time. 5. Wearable Devices: Where real-time date and time functionality is critical. Alternative Components 1. Microchip MCP7940N: An I2C real-time clock with battery backup. 2. NXP PCF8563: An RTC with integrated SRAM and a similar feature set. 3. Maxim Integrated DS1307: An I2C RTC that can be coupled with external SRAM. 4. STMicroelectronics M41T00: An RTC having non-volatile memory. 5. Intersil ISL12022: A low-power RTC with a programmable power switch. Embedded Modules 1. RTC Modules: There are numerous RTC breakout boards encapsulating the DS1248 or similar RTCs, used in various microcontroller projects. 2. Arduino-compatible RTC shields: Some shields integrate the DS1248 or comparable RTCs for easy interfacing with various Arduino platforms. 3. Raspberry Pi RTC modules: RTC boards can also function with Raspberry Pi systems to provide accurate time-keeping. Related Q&A 1. Q: What is the primary role of the DS1248WP-120? - A: The DS1248WP-120 serves primarily as a real-time clock and non-volatile RAM, retaining data even when the main power supply is not available. 2. Q: How does the DS1248 manage time accuracy? - A: The DS1248 utilizes an internal oscillator and dividers to maintain accurate time and can adjust for leap years and months, ensuring accuracy over extended periods. 3. Q: Can the non-volatile RAM in the DS1248 be accessed like regular RAM? - A: Yes, the NVRAM in the DS1248 can be accessed and written to just like standard RAM, with the additional benefit of data retention when powered off. 4. Q: What kind of battery is used with the DS1248? - A: The DS1248 typically uses a lithium coin cell battery to provide backup power for the clock and NVRAM, allowing operation during power loss. 5. Q: Is the DS1248 suitable for low-power applications? - A: Yes, the DS1248 is designed for low power consumption, making it ideal for battery-operated devices and energy-efficient applications. This overview should help you understand the main features and applications of the DS1248WP-120.