資料來源:https://www.seeedstudio.com/Arduino-Leonardo-%28%2Bheaders%29-p-1233.html
The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page.
This version of the Leonardo comes assembled.
Summary
Microcontroller | ATmega32u4 |
Operating Voltage | 5V |
Input Voltage (recommended) | 7-12V |
Input Voltage (limits) | 6-20V |
Digital I/O Pins | 20 |
PWM Channels | 7 |
Analog Input Channels | 12 |
DC Current per I/O Pin | 40 mA |
DC Current for 3.3V Pin | 50 mA |
Flash Memory | 32 KB (ATmega32u4) of which 4 KB used by bootloader |
SRAM | 2.5 KB (ATmega32u4) |
EEPROM | 1 KB (ATmega32u4) |
Clock Speed | 16 MHz |
Weight | G.W 33g |
Battery | Exclude |
微控制器 | ATmega32u4 |
工作電壓 | 5V |
輸入電壓(推薦) | 7-12V |
輸入電壓(限制) | 6-20V |
數字I / O引腳 | 20 |
PWM通道 | 7 |
模擬輸入通道 | 12 |
每個I / O引腳直流電流 | 40毫安 |
直流電流,3.3V引腳 | 50毫安 |
閃存 | 32 KB(ATmega32u4),其中 4 KB通過引導加載程序使用 |
SRAM | 2.5 KB(ATmega32u4) |
EEPROM | 1 KB(ATmega32u4) |
時鐘速度 | 16兆赫 |