Overview
This reference design offers a multiwavelength smoke detector for commercial buildings. The board consists only of the RL78/G22 microcontroller, an analog front-end (AFE), LEDs, photodiodes, and several external components. Additionally, by utilizing the SNOOZE mode sequencer (SMS) of the RL78/G22, it enables ultra-low power consumption and high-precision smoke detection, allowing for a compact multi-wavelength smoke detector design.
Features
- Compact, low-power, high-performance MCU
- Integrated low-power AFE for photoelectric smoke detection that contains all necessary peripherals
- Minimal external components, achieving the lowest BOM and a smaller size
Applications
Building Automation
Getting Started
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(1) Labs Available for RTK7RL22SMD00000BJ
Sample & Buy
RTK7RL22SMD00000BJ
ActiveApplication Block Diagrams
 | Smoke Detector for Commercial Buildings Commerical smoke detector system for fire alarms achieves ultra-low power consumption with a simple configuration. |
Videos & Training
This video introduces a highly sensitive, ultra-low power smoke detector solution. It covers the types of smoke detectors, various detection methods, and a multi-LED smoke detector solution designed to meet the updated UL standards.
Additional Videos
News & Blog Posts
Blog Post Jul 22, 2026 |
Blog Post Oct 27, 2025 |
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