瑞萨电子 (Renesas Electronics Corporation)
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智能笔

概览

这款智能笔系统用于记录手写字体，并将副本储存为数字格式。 该智能笔使用一个 IR LED 将光照射到纸上，并使用一个 LED 传感器检测影像。 传感器可检测到笔的移动模式，并记录它写下的内容。

系统优势：

  • LED 和检测器可记录笔的移动
  • IR LED 不可见，因此用户在书写时不会因受任何灯光的影响而分心
  • 笔的蓝牙低能耗 (LE) 特性可将笔上的数字数据传输到电脑或平板上
  • 板上的 EEPROM 将书写的内容存放在存储中，以便传输到笔记本电脑上
  • 按键控制录音开始和智能笔开/关

方框图

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Template 1 Connector Arrow.436 Connector Arrow.418 US015 US015 US015 Sheet.384 MCU MCU MCU I2C I2C I2C UART UART UART GPIO GPIO GPIO UART UART UART ADC ADC ADC GPIO GPIO GPIO ADC.382 A/D A/D VDD VDD VDD R R R Connector Arrow Connector Line Connector Line.397 Connector Arrow.399 Connector Arrow.400 Connector Arrow.401 3.9mA 3.9mA 3.9mA 3.3V 3.3V 3.3V 2.5mA 2.5mA 2.5mA Sheet.416 Battery 1-Cell Sheet.406 Sheet.407 Line 1pt.1552 Line 1pt.1583 Ground - Signal Sheet.411 Sheet.412 Sheet.413 Sheet.414 Sheet.415 3.6V Battery 3.6V Battery 3.6V Battery Connector Arrow.419 Bi-directional Connector Arrow.421 Connector Arrow.422 Connector 1.160 Bi-directional.424 Bi-directional.425 Bi-directional.426 9mA 9mA 9mA 5V 5V 5V Microphone Sheet.430 Sheet.431 Connector Arrow.432 Microphone.433 Microphone Microphone Connector Arrow.437 Connector Arrow.439 Connector Arrow.440 Connector Arrow.441 BLE BLE BLE EEPROM EEPROM EEPROM Button Button Button LED LED LED LED Sensor LED Sensor LED Sensor Battery Charger Battery Charger Battery Charger Wireless Power Wireless Power Wireless Power Load Switch Load Switch Load Switch USB Connector USB Connector USB Connector USB to UART USB to UART USB to UART LDO LDO LDO

MCU

RA Arm Cortex-M MCU

Bluetooth Low Energy

蓝牙低能耗

LDO

线性稳压器（LDO）

Battery Charger

电池充电器集成电路

Load Switch

负载开关