Microchip Technology ATMEGA32U4-AU, 8bit AVR Microcontroller, 16MHz, 32 kB Flash, 44-Pin TQFP

  • RS Stock No. 131-0289
  • Mfr. Part No. ATMEGA32U4-AU
  • Manufacturer Microchip
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

ATmega32U4 8-Bit megaAVR Microcontrollers

The Atmel ATmega32U4 Microcontroller is an 8-bit megaAVR device based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle the ATmega32U4 achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and speed.

The ATmega32U4 features a USB 2.0 Device Module making it an ideal candidate for applications requiring USB connectivity. Also integrated is a JTAG interface for on-chip debug.

Microcontroller Features

16 MHz Max. Operating Frequency
Up to 16 MIPS at 16 MHz
32 KB Flash
1024 B EEPROM
2.5 KB SRAM
135 Instructions – Most single clock cycle execution
32 General Purpose Registers
26 GPIO
Power-on Reset and Programmable Brown-out Detection
Internal 8 MHz Calibrated Oscillator
Internal Clock Prescaler and On-the-fly Clock Switching
External and Internal Interrupt Sources
Six Power-Saving Sleep Modes
Internal and External Interrupts
Fully Static Operation
On-Chip 2-cycle Multiplier

Communication Features

USB 2.0 Full-speed/Low Speed Device Module
JTAG (IEEE1149.1 compliant) Interface
Programmable Serial USART with Hardware Flow Control
Master/Slave SPI Serial Interface
Byte Oriented 2-wire Serial Interface

Peripheral Features

On-chip PLL for USB and High-Speed Timer
10-bit Analogue-to-Digital Converter (ADC) – 12 Channel
One 10-bit High-Speed Timer/Counter with PLL (64 MHz) and Compare Mode
One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
Two 16-bit Timers/Counters with Separate Prescaler, Compare and Capture Mode
Four 8-bit PWM Channels
Four PWM Channels with Programmable Resolution from 2 bits to 16 bits
Six PWM Channels for High-Speed Operation, with Programmable Resolution from 2 bits to 11 bits
Output Compare Modulator
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analogue Comparator
Interrupt and Wake-up on Pin Change
On-chip Temperature Sensor

Specifications
Attribute Value
Family Name ATmega
Package Type TQFP
Mounting Type Surface Mount
Pin Count 44
Device Core AVR
Data Bus Width 8bit
Program Memory Size 32 kB
Maximum Frequency 16MHz
RAM Size 2.5 kB
USB Channels 1
Number of PWM Units 1
ADC Channels 12
Typical Operating Supply Voltage 2.7 5.5 V
Program Memory Type Flash
Number of Timers 3
Width 10.1mm
Timers 1 x 10 bit, 1 x 8 bit, 2 x 16 bit
Dimensions 10.1 x 10.1 x 1.05mm
Pulse Width Modulation 1(4 x 8 bit)
ADC Resolution 10bit
Minimum Operating Temperature -40 °C
PWM Resolution 8bit
Instruction Set Architecture RISC
Number of ADC Units 1
Maximum Operating Temperature +85 °C
Length 10.1mm
ADCs 1(12 x 10 bit)
Timer Resolution 8 bit, 10 bit, 16 bit
Height 1.05mm
PWM Channels 4
165 In Global stock for delivery within 4 - 8 working days
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