Artasie Real-Time Clock - AM1805 01

Artasie RTC AM1805 EVB AM180512CEVB

The Ambiq® Artasie Real-Time Clock AM1805 with Power Management provides a groundbreaking combination of ultra-low power coupled with a highly sophisticated feature set. With power requirements significantly lower than any other industry RTC (as low as 14 nA), these are the first semiconductors based on Ambiq’s innovative SPOT® (Subthreshold Power Optimized Technology) CMOS platform.

Artasie AM1805 EVB Drawing
Artasie RTC AM1805 EVB AM180512CEVB

Detailed Functional Block Diagram for Ambiq Artasie RTC - AM1805

More Information

The AM1805 includes on-chip oscillators to provide minimum power consumption, full RTC functions including battery backup and programmable counters and alarms for timer and watchdog functions, and a I2C 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 allows the AM1805 to be used as a supervisory component in a host microcontroller based system.

Pin Configuration Diagram for Ambiq Artasie RTC - AM1805

Specifications

Ultra-Low Supply Current

14 nA with RC oscillator

22 nA with RC oscillator and Autocalibration

55 nA with crystal oscillator

Baseline Timekeeping

4x GPIO Outputs

32.768 kHz crystal oscillator with integrated load capacitor/resistor

Counters for hundredths, seconds, minutes, hours, date, month, year, century, and weekday

Alarm capability on all counters

Programmable output clock generation (32.768 kHz to 1 year)

Countdown timer with repeat function

Automatic leap year calculation

Artasie AM1805<br>AM1805AQ

Artasie AM1805
AM1805AQ

Buy
Artasie AM1805<br>Evaluation Board<br>AM180512CEVB

Artasie AM1805
Evaluation Board
AM180512CEVB

Buy
Artasie AM1805<br>AM1805AQ

Artasie AM1805
AM1805AQ

Buy
Artasie AM1805<br>Evaluation Board<br>AM180512CEVB

Artasie AM1805
Evaluation Board
AM180512CEVB

Buy

Advanced Timekeeping

Integrated power optimized RC oscillator

Advanced crystal calibration to ± 2 ppm

Advanced RC calibration to ± 16 ppm

Automatic calibration of RC oscillator to crystal oscillator

Watchdog timer with hardware reset

256 bytes of general purpose RAM

Power Management

Integrated ~1Ω power switch for off-chip components such as a host MCU

System sleep manager for managing host processor wake/sleep states

External reset signal monitor

Reset output generator

Supercapacitor trickle charger with programmable charging current

Automatic switchover to Voltage of the Battery (VBAT)

External interrupt monitor

Programmable low battery detection threshold

Programmable analog voltage comparator

Ultra-Low Power Flexible Serial Peripherals

I2C (up to 400 kHz) serial interface

Wide Operating Range

Operating Voltage: 1.5-3.6 V

Clock and RAM Retention Voltage: 1.5-3.6 V

Operating Temperature: -40°C to 85°C

All inputs include Schmitt Triggers

Applications

Smart Cards

Wireless Sensors and Tags

Medical Electronics

Utility Meters

Data Loggers

Appliances

Handsets

Consumer Electronics

Consumer Equipment

Package Option

3 mm x 3 mm 16-pin QFN package (also available in wafer form)

Ordering Information

AM1805AQ

AM1805I2CEVB (EVB)

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