RTC

The Ambiq® real-time clock is the industry leader in power management, functioning as an extremely low power "keep-alive" source for the system and bypassing the need for the main MCU to power down the device to conserve power. It monitors the system while the components are powered off for a user-configurable power-up event while consuming only nanoamps of power.

Glossary

RTC

Apollo Families

Apollo3 Family SoCs are the ultimate solution for innovative, energy-efficient devices that show what’s possible for wearables, smart hove devices, or medical applications.

01

Proprietary Calibration Algorithm

The Arm Cortex core offers the compute horsepower required by the growing number of IoT endpoint devices.

02

3 Distinct Feature Groups

As low as 4 μA/MHz power efficiency to meet the most battery-constrained processing needs.

03

Reduce Sleep Current

Multiple packages include BGA, WLCSP, and QFN.

04

Low Power Requirements

Serves as the main or co-processor power-optimized sensor processing.

Comparison table

Select chips from the comparison list in the table and find the perfect option for you

Parameters

Ultra-Low Supply Current

Baseline Timekeeping

Crystal (XT) Oscillator

Number of GP Outputs

Advanced Timekeeping

RC Oscillator

Calibration/Auto-calibration

Watchdog Timer (WDT)

RAM (Bytes)

Enhanced I/O and Power Management

VBAT Switch

External Interrupts

Reset Management

Power Switch and Sleep Finite State Machine (FSM)

Programmable Charging Current

Interface

Interface

Wide Operating Range

Operating Voltage

Operating Temperature

Package Options

Ordering Information

Artasie AM1815

< 14nA with RC oscillator
< 22nA with RC oscillator
and autocalibration
< 55nA with crystal oscillator

3

256

3/4-wire SPI up to 2 MHz

1.5-3.6 V

-40°C to 85°C

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

• AM1815AQ
• AM1815SPIEVB (EVB)

Artasie AM1805

< 14nA with RC oscillator
< 22nA with RC oscillator
and autocalibration
< 55nA with crystal oscillator

4

256

I²C up to 400 kHz

1.5-3.6 V

-40°C to 85°C

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

• AM1805AQ
• AM1805I2CEVB (EVB)

Artasie AM0815

< 14nA with RC oscillator
< 22nA with RC oscillator
and autocalibration
< 55nA with crystal oscillator

3

256

3/4-wire SPI up to 2 MHz

1.5-3.6 V

-40°C to 85°C

3 mm x 3 mm, 16-pin QFN package

• AM0815AQ
• AM1815SPIEVB (EVB)

Artasie AM0805

< 14nA with RC oscillator
< 22nA with RC oscillator
and autocalibration
< 55nA with crystal oscillator

4

256

I²C up to 400 kHz

1.5-3.6 V

-40°C to 85°C

3 mm x 3 mm, 16-pin QFN package

• AM0805AQ
• AM1805I2CEVB (EVB)

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RTC
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Ambiq® partners with industry leaders to create a seamless IoT environment. We provide top turnkey solutions by expanding our partner network, resulting in numerous alliances.

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