Renesas Electronics Corporation
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Smart Range Hood

Overview

As smart kitchens evolve, the demand is shifting from traditional contact-type buttons to sleek, touch-based interfaces that combine enhanced functionality with modern aesthetics. This system delivers a sophisticated and compact design powered by a 32-bit MCU, enabling non-contact user interaction and system-level integration for enhanced performance.

System Benefits​:

  • Compact PCB layout enhances system design flexibility.
  • Simplified development with a single MCU for multiple functions.
  • Supports temperature, humidity, and thermopile sensors to enable advanced environmental monitoring.
  • Proximity touch control for advanced human machine interface (HMI) function.
  • Capacitive Touch Sensor Unit 2 (CTSU2) in RA2E1 MCU improves touch accuracy and noise resistance.
  • Smart range hood
  • Smart appliances

Block Diagram

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Template 1 Connector Arrow.50 Connector Arrow Connector Arrow.9 Connector 1.160 Connector Arrow.11 5V 5V 5V <5mA <5mA <5mA Connector Arrow.14 Connector Arrow.15 3.3V <0.6mA 3.3V <0.6mA 3.3V<0.6mA 5V <4mA 5V <4mA 5V<4mA Connector Arrow.21 5V 5V 5V <70mA <70mA <70mA Connector Arrow.26 Connector Line Plug Sheet.30 Sheet.31 Sheet.32 Sheet.33 Diode Sheet.35 Sheet.36 Sheet.37 Capacitor Polarized Sheet.39 Sheet.40 Sheet.41 Sheet.42 Connector Line.43 Ground - Earth Sheet.45 Sheet.46 Sheet.47 Sheet.48 JP121 JP121 JP121 3.3V for Sensors 3.3V for Sensor 3.3V for Sensor 5V 5V 5V AC 85~265V Input AC 85~265V Input AC 85~265V Input Connector 1.160.54 Bi-directional.61 Connector Arrow.62 Touch Key Sheet.64 Sheet.65 Sheet.66 Sheet.67 Sheet.68 Sheet.69 Sheet.70 Sheet.71 Sheet.72 Proximity Button Capacitive Touch Electrode Proximity Button Capacitive Touch Electrode Proximity Button Capacitive Touch Electrode 5V 5V 5V <20mA <20mA <20mA Connector Line.76 Connector Line.77 Connector Line.79 Speaker speaker_8_ Sheet.83 Sheet.84 Sheet.85 Sheet.86 Buzzer Buzzer Buzzer Diode - Photodiode Sheet.98 Sheet.99 Sheet.100 Sheet.101 Sheet.102 Darlington.651 Sheet.104 Darlington.254 Resistor - Fixed Connector Line.107 Connector Line.108 5V 5V 5V *For range ambient temperature *For range ambient temperature *For range ambient temperature Buck Regulator Buck Regulator Buck Regulator LDO LDO LDO Level Shifter Level Shifter Level Shifter Humidity & Temp Sensor All-In-One Air Quality Module All-In-One Air Quality Module Thermopile Thermopile* Thermopile* Fan Motor Unit Fan Motor Unit Fan Motor Unit Sheet.112 MCU MCU MCU GPIO GPIO GPIO GPIO GPIO GPIO PWM PWM PWM CTSU CTSU CTSU I2C I2C I2C

Buck Regulator

Non-Isolated AC/DC Buck Converters

LDO

Linear Regulators (LDO)

MCU

RA Arm Cortex-M MCUs
RX 32-Bit Performance / Efficiency MCUs

Level Shifter

2-Wire Bus Buffers

Software

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