RTC 01

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

Features 02

Proprietary Calibration Algorithm
A proprietary calibration algorithm to digitally tune the RC and XT oscillator frequency with accuracy as low as 2 ppm.
3 Distinct Feature Groups
3 distinct feature groups: 1) baseline timekeeping; 2) advanced timekeeping and 3) power management.
Reduce Sleep Current
Integrates a power switch with ~1 Ω impedance to cut-off ground current on the host MCU and reduce sleep current to <1 nA.
Low Power Requirements
Power requirements significantly lower than other RTCs.
Supports Multiple Modes
RC oscillator and Autocalibration modes are supported.
CMOS Platform
1st semiconductors based on Ambiq’s SPOT CMOS platform.
Companion for Host Processors
Serves as a companion part for host processors.
Artasie AM0815

With power requirements significantly lower than any other industry Real Time Clock (RTC), as low as 14 nA, AM0815 provides a ground-breaking combination of ultra-low power coupled with a highly sophisticated feature set.

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Full-Function RTC

Serves as a full-function RTC for host processors including microcontrollers (MCU) and System-on-Chip (SoC).

Embedded Power Management

Embedded power management features can operate as a backup device in both line-powered and battery-powered systems.

Watchdog Timer

Integrated with 256 bytes of general-purpose RAM and a Watchdog timer with hardware reset.

Artasie AM1815

Relying on the on-chip oscillators for minimum power consumption, the AM1815 comes with full RTC functions including battery backup and programmable counters, alarms for timer and watchdog functions, and an SPI serial interface for communication with a host controller.

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Companion for Host Processors

Serves as a companion part for host processors including microcontrollers, radios, and digital signal processor.

Embedded Power Management

Embedded power management features can operate as a backup device in both line-powered and battery-powered systems.

Watchdog Timer

Integrated with 256 bytes of general-purpose RAM and a Watchdog timer with hardware reset.

RTC Products Overview 04

AM0805AM0815AM1805AM1815

Ultra-Low Supply Current

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

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

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

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

Baseline Timekeeping

Crystal (XT) Oscillator

Number of GP Outputs

4

3

4

3

Advanced Timekeeping

RC Oscillator

Calibration/Auto-calibration

Watchdog timer (WDT)

RAM (Bytes)

256

256

256

256

Enhanced I/O and Power Management

VBAT Switch

External Interrupts

Reset Management

-

-

Power Switch and Sleep Finite State Machine (FSM)

-

-

Programmable Charging Current

-

-

Interface

I2C up to 400kHz

3/4-wire SPI up to 2MHZ

I2C up to 400kHz

3/4-wire SPI up to 2MHZ

Wide Operating Range

Operating Voltage

1.5-3.6V

1.5-3.6V

1.5-3.6V

1.5-3.6V

Operating Temperature

-40°C to 85°C

-40°C to 85°C

-40°C to 85°C

-40°C to 85°C

Package Option

3 mm x 3 mm 16-pin QFN package

3 mm x 3 mm 16-pin QFN package

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

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

Ordering Information

• AM0805AQ
• AM1805I2CEVB (EVB)

• AM0815AQ
• AM1815SPIEVB (EVB)

• AM1805AQ
• AM1805I2CEVB (EVB)

• AM1815AQ
• AM1815SPIEVB (EVB)

Where To Buy 05

India

Fujitsu Electronics Pacific Asia Limited Singapore Branch

[email protected]

Southeast Asia

IID A ELECTRONICS(TSUSHO) Co., Ltd

[email protected]

Fujitsu Electronics Pacific Asia Limited Singapore Branch

[email protected]

China and Hong Kong

Direct Sales

[email protected]

Japan

Fujitsu Electronics Inc (FEI)

[email protected]

IIDA ELECTRONICS (TSUSHO) Co., Ltd

[email protected]

USA

Direct Sales

[email protected]

TOP-electronics USA

[email protected]

Taiwan

Direct Sales

[email protected]

Korea

Direct Sales

[email protected]

Sechang Semicon Co., Ltd. – Sales Representative

[email protected]