Renesas Electronics Corporation
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Active Stylus

Overview

This advanced tablet active stylus system is designed to replicate the feel and functionality of a real pencil. It offers pressure sensitivity for natural writing and drawing, acceleration detection for usage tracking and power efficiency, and wireless charging for added convenience.

System Benefits:

  • Small enough to be integrated into a cell phone.
  • Extremely low power consumption for prolonged usage.
  • Wireless charging and optional pressure detection enhance usability.
  • Active stylus

Block Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 WS022 WS022 WS022 Haptic Haptic Haptic Flash Flash Flash ASIC ASIC ASIC Pressure Sensor Pressure Sensor Pressure Sensor Connector Line Connector Line.28 Connector Line.29 Connector Line.30 Transformer Inductor Coreless (Air conductor) Sheet.32 Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Connector Line.41 Transformer Inductor Coreless (Air conductor).43 Sheet.44 Sheet.45 Sheet.46 Sheet.47 Sheet.48 Sheet.49 Sheet.50 Sheet.51 Sheet.52 Connector Line.53 Charging Pad Charging Pad Charging Pad Connector Arrow Bi-directional Bi-directional.57 Bi-directional.58 Connector Arrow.60 Connected signals arrow Connector Arrow.62 Connector Arrow.63 Bi-directional.64 Connector Arrow.65 Board - Optional.66 Connector Arrow.68 Battery.27 Sheet.70 Sheet.71 Sheet.72 Connector Arrow.73 Connected signals line 3.7V 3.7V 3.7V NFC 1W Charger NFC 1W Charger NFC 1W Charger Load Switch Load Switch Load Switch Button Button Button G Sensor G Sensor G Sensor Hall Sensor Hall Sensor Hall Sensor Universal NFC Wireless Charger Universal NFC Wireless Charger Universal NFC Wireless Charger GreenPAK GreenPAK GreenPAK Sheet.76 Bluetooth Low Energy Bluetooth Low Energy Bluetooth Low Energy I2C I2C I2C GPIO GPIO GPIO SPI SPI SPI I2C I2C I2C I2C I2C I2C GPIO GPIO GPIO

Universal NFC Wireless Charger

This system uses Renesas' NFC technology for seamless device compatibility, offering hassle-free, reliable power delivery for wearables, medical sensors, and IoT devices.
View Diagram

NFC 1W Charger

NFC

Load Switch

Load Switches

Bluetooth Low Energy

Bluetooth Low Energy

Haptic

Haptic Drivers

Flash

SPI NOR Flash

GreenPAK

AnalogPAK