Manufacturer Part Number
DS1391U-33+
Manufacturer
Analog Devices
Introduction
High-precision real-time clock featuring alarm, leap year, and square wave functions
Product Features and Performance
Alarm functionality for time-based alerts
Leap year compensation ensures calendar accuracy
Square wave output for periodic interrupt generation
Trickle-Charger supports backup battery charging
SPI interface for communication with microcontrollers
Suitable for battery-powered applications
Product Advantages
Extended operating temperature range for harsh environments
Low current timekeeping maximizes battery life
Compact package suitable for space-constrained applications
Key Technical Parameters
Type: Clock/Calendar
Features: Alarm, Leap Year, Square Wave Output, Trickle-Charger
Time Format: HH:MM:SS:hh (12/24 hr)
Date Format: YY-MM-DD-dd
Interface: SPI
Voltage - Supply: 2.97V ~ 5.5V
Voltage - Supply, Battery: 1.3V ~ 5.5V
Current - Timekeeping (Max): 175µA
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 10-TFSOP, 10-MSOP
Supplier Device Package: 10-uMAX/uSOP
Quality and Safety Features
Robust construction for long-term reliability
Complies with industry standards for safety and quality
Compatibility
Compatible with SPI protocol-enabled devices
Versatile voltage supply range for diverse electronic systems
Application Areas
Consumer electronics
Industrial systems
Portable instruments
Communication infrastructure
Healthcare devices
Product Lifecycle
Product Status: Active
Not close to discontinuation
Future replacement or upgrade options are typically available
Several Key Reasons to Choose This Product
Precise timekeeping enhances system performance
Alarm and square wave features enable broad utility
Trickle-Charger for effective battery management
Low power consumption for energy-sensitive projects
Versatile operating conditions meet diverse application requirements
Easy integration with existing SPI communication bus systems
DS1391U-33+TAnalog Devices / Maxim Integrated
DS1397DALLAS