Smart Clotheshorse

This reference design by Renesas provides a cost-optimized RX130 32-bit microcontroller (MCU) with a capacitive touch sensing unit (CTSU). The buck regulator and LDO power the MCU and other peripheral modules. A humidity and temperature sensor and half-bridge drivers are also integrated into this solution. Voice recognition and Wi-Fi modules are used for smart home applications.

In some indoor areas the environment is very moist, making it difficult to dry clothes efficiently. With today’s technology, there are now additional features for electronic-type dryers, like remote and voice control, and a local touch panel that automatically turns off to save energy.

System Benefits

• 32 MHz, 32-bit RX MCUs, 50 DMIPS, up to 512 KB Flash memory, up to 36 pins capacitive touch sensing unit, up to 6 comms channels, 12-bit A/D, D/A, RTC, and IEC60730 compliant
• 24 MHz, 16-bit MCU, compact, low-power, high-function general-purpose microcontrollers ideal for sub-microcontrollers and extreme low-end to save cost
• Input voltage range 4.5 V to 18 V, efficient 3 A synchronous buck regulator
• 1.2 A synchronous buck, power input voltage range from 3 V to 40 V
• 4 mm x 3 mm DFN package
• Half-bridge drivers designed for applications using DC motors, three-phase brushless DC motor
• High accuracy humidity and temperature measurements for environmental monitoring