Ambiq Micro’s ultra-low power Real-Time Clock (RTC) device is a key enabler for this new generation of smart cards.
Why? Because Ambiq-enabled smart cards can potentially last more than five years while running on a smaller (and less expensive) battery.
The Ambiq RTC plays two key roles in smart card operation:
- As a highly accurate clock source for one-time password (OTP) transactions
- As an overall system power manager
Cards using traditional RTC chips typically consume hundreds of nanoamps – even in sleep mode. This high power drain, coupled with a limited battery size, typically limits the card product life to three years or less.
Using Ambiq’s RTC solution not only cuts total power by more than 7X when compared to the closest industry competitor, it can also be used to turn off and manage the smart card’s battery-hungry microcontroller, display, and wireless transceiver. While these external components are turned off, the Ambiq RTC plays a dual role of keeping accurate time and also monitoring the system for a power-up condition – all while consuming a very small amount of power.
The end result? Longer battery life, more functionality, and enhanced security.