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
3 Distinct Feature Groups
Reduce Sleep Current
Low Power Requirements
Supports Multiple Modes
CMOS Platform
Companion for Host Processors
Highlighted Products 03
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.
Learn moreServes as a full-function RTC for host processors including microcontrollers (MCU) and System-on-Chip (SoC).
Embedded power management features can operate as a backup device in both line-powered and battery-powered systems.
Integrated with 256 bytes of general-purpose RAM and a Watchdog timer with hardware reset.
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.
Learn moreServes as a companion part for host processors including microcontrollers, radios, and digital signal processor.
Embedded power management features can operate as a backup device in both line-powered and battery-powered systems.
Integrated with 256 bytes of general-purpose RAM and a Watchdog timer with hardware reset.
RTC Products Overview 04
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| AM0805 | AM0815 | AM1805 | AM1815 | |
Ultra-Low Supply Current | < 14nA with RC oscillator | < 14nA with RC oscillator | < 14nA with RC oscillator | < 14nA with RC 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 | • AM0815AQ | • AM1805AQ | • AM1815AQ |
Where To Buy 05
KAGA FEI Co., Ltd
IIDA ELECTRONICS (TSUSHO) Co., Ltd
IID A ELECTRONICS(TSUSHO) Co., Ltd
KAGA FEI ELECTRONICS PACIFIC ASIA LIMITED Singapore Branch
KAGA FEI ELECTRONICS PACIFIC ASIA LIMITED
Direct Sales
Direct Sales
TOP-electronics USA