Renesas introduces a versatile design to meet the growing demand in the air purifier market. Our main control MCU features built-in touch sensor capabilities, high-performance ADC, display, USB, and security modules. This platform enables rapid expansion of design options through the ARM ecosystem while ensuring secure cloud connectivity. Additionally, the design incorporates essential sensors such as temperature and humidity, TVOC, and automatic filter replacement detection using a light sensor. The NFC technology guarantees the device's compatibility with appropriate filters only. This design allows for automatic monitoring and intelligent control via cloud integration.

System Benefits:

  • The RA4M1 MCU features a 14-bit ADC, high-performance capacitive touch sensing unit (CTSU), and an integrated ARM ecosystem
  • Full analog sensor portfolio and high-performance power system
  • NFC for filter authentication




  • Home/office filtration systems

Winning Combinations Interactive Diagram

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16:9 CN192 CN192 CN192 Light Sensor Light Sensor Light Sensor Gas Sensor Gas Sensor Gas Sensor Humidity and Temperature Sensor Humidity and Temperature Sensor Humidity and Temperature Sensor Formaldehyde PM 2.5 Module Formaldehyde PM 2.5 Module Formaldehyde PM 2.5 Module NFC Reader NFC Reader NFC Reader Smart Connection Module by Wi-Fi Smart Connection Module by Wi-Fi Smart Connection Module by Wi-Fi Touch Key Sheet.18 Sheet.19 Sheet.20 Sheet.21 Sheet.22 Sheet.23 Sheet.24 Sheet.25 Sheet.26 Speaker speaker_8_ Sheet.29 Sheet.30 Sheet.31 Sheet.32 Motor Sheet.34 Sheet.35 M M Wi-Fi Sheet.80 Sheet.71 Sheet.72 Sheet.73 Sheet.74 Sheet.75 Sheet.76 Sheet.77 Sheet.78 Sheet.79 LDO LDO LDO Sheet.93 Sheet.37 Sheet.38 AC AC Ion Generator Ion Generator Ion Generator AUX Power AUX Power AUX Power TRIAC TRIAC TRIAC Sheet.109 Sheet.100 Sheet.108 Connector 1 Sheet.107 Sheet.101 Sheet.106 Sheet.103 Sheet.104 Sheet.105 Connector double arrow.112 Connector double arrow.113 Connector double arrow.114 Connector double arrow Touch Key Touch Key Touch Key Buzzer Buzzer Buzzer FAN FAN FAN Connector double arrow.121 Connector Arrow Connector Arrow.123 Connector Arrow.124 Connector double arrow.126 Connector Arrow.128 Remote Control Remote Control Remote Control Connector Arrow.130 5V 5V 5V Connector Arrow.132 3.3V 3.3V 3.3V Sheet.163 Sheet.149 Sheet.150 Sheet.151 Darlington.131 Sheet.153 Sheet.154 Darlington.254 Sheet.156 Sheet.157 Darlington.254 Connector Arrow.164 Connector Line Connector double arrow.167 Connector Line.169 Connector Line.170 Connector Line.171 Connector Line.172 Connector 1 Connector 1.174 LCD Segment Sheet.176 Sheet.177 Sheet.178 Sheet.179 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Sheet.184 Sheet.185 Sheet.186 Sheet.187 Sheet.188 Sheet.189 Sheet.190 Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 Sheet.197 Sheet.198 Sheet.199 Sheet.200 Sheet.201 Sheet.202 Sheet.203 Sheet.204 Sheet.205 ON ON Sheet.206 OFF OFF Sheet.207 Sheet.208 Sheet.209 Sheet.210 Sheet.211 Sheet.212 Sheet.213 MCU MCU MCU* MCU* I2C I2C I2C UART UART UART CTSU CTSU CTSU LCD Controller LCD Controller LCD Controller GPIO GPIO GPIO SPI SPI SPI *Other Optional MCU: RA4E1 *Other Optional MCU: RA4E1 *Other Optional MCU: RA4E1
Exiting Interactive Block Diagram