Microcontroller minimum system-ATMEGA32U4 V1.0

• This design is a minimum system based on ATMEGA32U4 microcontroller.
• This project selected ATMEGA32U4 ( product number: C44854) from Lichuang Mall to design this minimum system. ATMEGA32-16AU is a high-performance, low-power consumption 8-bit AVR microprocessor .
• The minimum system of this design includes the reset circuit, crystal oscillator circuit, power pin header and other peripheral circuits necessary for the operation of the microcontroller, and all commonly used pins are led out to facilitate developers to embed this solution into development.
• This minimum system is compatible with the ATMEGA16U2  LQFP-44 packaged microcontroller chip.
• The next step will be PCB board proofing, and then we will update photos of the empty PCB board, photos of the finished welding product, demonstration video tutorials, etc.
• The structure is compact and 30*30 M3*4 mounting holes are reserved for easy installation.
• Two 8-bit timer/counters with independent prescaler and comparator functions
• A 16-bit timer/counter with prescaler, compare function and capture function

Real-time counter RTC with independent oscillator Quad-channel PWM 8-channel 10-bit ADC 8 single-ended channels 7 differential channels in TQFP package 2 differential channels with programmable gain (1x, 10x, or 200x) Two byte-oriented Line interface Two programmable serial USARTs SPI serial interface capable of operating in master /slave mode Programmable watchdog timer with independent on-chip oscillator On-chip analog comparator Special microcontroller features Power on Reset and programmable power-down detection On-chip calibrated RC oscillator On-chip/external interrupt sources 6 sleep modes: Idle mode, ADC noise suppression mode, power save mode, power down mode and standby mode and extended standby mode I /O and package 32 programmable I/O ports 40-pin PDIP package , 44-pin TQFP package, and 44-pin MLF package Operating voltage: ATmega32-16AU: 4.5 - 5.5V