Microchip, 8bit AVR, ATmega Microcontroller, 16MHz, 32 kB Flash, 44-Pin QFN

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Packaging Options:
RS Stock No.:
131-0290P
Mfr. Part No.:
ATMEGA32U4-MU
Brand:
Microchip
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Brand

Microchip

Family Name

ATmega

Package Type

QFN

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 x 8 bit

Number of SPI Channels

2

Number of USART Channels

1

Number of CAN Channels

0

Number of I2C Channels

1

Typical Operating Supply Voltage

2.7 → 5.5 V

Number of UART Channels

1

Height

0.95mm

Instruction Set Architecture

RISC

Minimum Operating Temperature

-40 °C

Program Memory Type

Flash

Width

7.1mm

Dimensions

7.1 x 7.1 x 0.95mm

Pulse Width Modulation

1 (4 x 8 bit)

Number of PCI Channels

0

Number of Ethernet Channels

0

ADCs

12 x 10 bit

Maximum Number of Ethernet Channels

0

Number of ADC Units

1

Number of LIN Channels

0

Length

7.1mm

Maximum Operating Temperature

+85 °C

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