Product Highlights
• Ultra-Low-Power Real Time Clock
• 70nA Timekeeping Current
• 1.1V to 5.5V Timekeeping Voltage Range
• Automatic Switchover to Backup Supply on
Power Failure
• Trickle Charger for External Supercapacitor
• Integrated Power Switch with State Machine
Increases System Battery Life
• Up to 500mA Continuous Current
• Ultra-Low 57mΩ On-Resistance
• Wakeup on Periodic Interrupt—Countdown Timer
(100ms to 1hr) and Alarms (1s Resolution)
• Wakeup on External Interrupt, Like Pushbutton
• Saves Board Space
• No External Capacitors Required for Crystal
• 1.5mm x 2mm 12-WLP
• 3mm x 3mm 12-TDFN
• Value-Add Features for Ease of Use
• Works with Many 32.768kHz Crystals (no CL
limitation)
• Two Time-of-Day Alarms
• Event Detection and Timestamps
• 1/128 Second Register
• 32 bytes of User RAM

Key Applications
• Electronic Shelf Label
• Ultra-low-power IoT Modules
• Medical Wearables
• Temperature Loggers
• Asset Tracking
• Battery-Powered Devices