AB1805-T3

AB1805-T3 is an AB18X5 real-time clock with a power management family that provides a ground-breaking combination of ultra-low power coupled with a highly sophisticated feature set. With power requirements significantly lower than any other industry RTC, this is the first semiconductor based on an innovative SPOT™ CMOS platform. This includes on-chip oscillators to provide minimum power consumption, full RTC functions including battery backup and programmable counters and alarms for timers and watchdog functions and either an I²C or SPI serial interface for communication with a host controller. An integrated power switch and a sophisticated system sleep manager with counter, timer, alarm and interrupt capabilities allow to be used as a supervisory component in a host microcontroller-based system. Application includes smart cards, wireless sensors and tags, medical electronics, utility meters, data loggers, appliances, handsets, consumer electronics, and communication equipment.

• Ultra-low supply current (all at 3V), 14nA with RC oscillator
• 32.768KHz crystal oscillator with integrated load capacitor/resistor
• Alarm capability on all counters, programmable output clock generation (32.768KHz to 1 year)
• Countdown timer with repeat function, automatic leap year calculation
• Advanced timekeeping features are integrated power optimized RC oscillator
• Automatic calibration of RC oscillator to crystal oscillator
• Power management features are system sleep manager for managing host processor wake/sleep states
• Operating voltage range from 1.5 to 3.6V, clock and RAM retention voltage range from 1.5 to 3.6V
• 16-pin QFN package
• Temperature range from -40 to +85°C