Atmel MCUs for fire and security

Atmel’s versatile MCUs power a number of fire and security applications – allowing vendors to design advanced systems that effectively safeguard people, property and business resources.

“Atmel offers a wide range of ARM-based AT91SAM and AVR 32-bit microcontrollers for such applications,” an Atmel engineering rep told Bits & Pieces. “More specifically, the SAM3 family and AVR UC3 families support entry-level systems, while advanced controllers with Ethernet connectivity are based on the SAM9 and AVR UC3 families.”

Backup mode and diverse connectivity options include an embedded soft modem, Wi-Fi extension board, Ethernet and RS485 connectivity, with Atmel CryptoAuthentication enabling node authentication and secure communication. Top-level security can be provided by AVR XMEGA hardware AES/DES crypto module and AES/DES bootloaders for megaAVR, tinyAVR and AVR XMEGA.

“It should also be noted that low-power 8-bit microcontrollers minimizes power consumption, with Atmel’s ATmega128RFA1 single-chip, allowing devs to design ZigBee smoke and motion detectors with extremely low power consumption,” the engineering rep continued. “Plus, Atmel’s XMEGA analog delivers optimal performance with 12-bit ADC resolution up to 2Msps with internal gain stage (up to X64), while optimizing BOM by removing its external gain stage.”

So let’s look at some specific example of how Atmel MCUs can be used to power a wide range of fire and security devices:

  • Control Panels – The primary point of contact for home and building automation consumers. Atmel’s portfolio supports a wide range of designs, meeting simple or complex needs.
  • Detectors – Known as the eyes and ears of fire and security solutions. Our low-power solutions are capable of supporting motion detectors, smoke detectors, sounders and glass break detectors based on the Atmel tinyAVR, megaAVR, AVR XMEGA and MCU Wireless (single-chip microcontroller +RF) families.
  • PIR (Camera) Detector – Atmel’s AVR picoPower technology significantly improves detector battery life, delivering the reliability that Passive Infrared (PIR) camera-based detectors require.

“Flexible connectivity is key for home gateway and control panel applications. That is why Atmel’s microcontrollers (MCUs) help vendors achieve a rapid time-to-market by providing validated connectivity via Ethernet, USB, soft modem (PSTN), Wireless LAN and RS-485 interfaces with backup mode,” the engineering rep added. “In the event the main power supply cut off, the control panel can automatically switch to battery operating mode to maintain connectivity.”

Interested in learning more? Additional information about Atmel’s extensive fire and security portfolio can be found here.

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