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ATmega32U4

Status: In Production

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Device Overview

Summary

The low-power Microchip 8-bit AVR® RISC-based microcontroller featuring 32 KB self-programming flash program memory, 2.5 KB SRAM, 1 KB EEPROM, USB 2.0 full-speed/low-speed device, 12-channel 10-bit A/D-converter, and JTAG interface for on-chip-debug. The device achieves up to 16 MIPS throughput at 16 MHz. 2.7-5.5 volt operation.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, allowing you to optimize power consumption versus processing speed.

Additional Features
  • Complies fully with Universal Serial Bus Specification Rev. 2.0
  • Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/s
  • Endpoint 0 for Control Transfers: Up to 64 bytes
  • Six Programmable Endpoints with In or Out Directions and with Bulk, Interrupt or Isochronous Transfers
  • Configurable Endpoints size up to 256 bytes in double bank mode
  • Fully independent 832 bytes USB DPRAM for endpoint memory allocation
  • Suspend/Resume Interrupts
  • CPU Reset possible on USB Bus Reset detection
  • 48 MHz from PLL for Full-Speed Bus Operation
  • USB Bus Connection/Disconnection on Microcontroller Request
  • Crystal-less operation for Low-Speed mode
Parametrics
Name
Value
Program Memory Type
Flash
Program Memory Size (KB)
32
CPU Speed (MIPS/DMIPS)
16
SRAM (B)
2,560
Data EEPROM/HEF (bytes)
1024
Digital Communication Peripherals
1-UART, 2-SPI, 1-I2C
Capture/Compare/PWM Peripherals
2 Input Capture, 2 CCP, 12PWM
Timers
2 x 8-bit, 2 x 16-bit
Number of Comparators
1
Number of USB Modules
1, Full Speed
Temperature Range (°C)
-40 to 85
Operating Voltage Range (V)
2.7 to 5.5
Pin Count
44

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Development Environment

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Similar Devices

Product
Pins
Flash (KB)
SRAM (B)
Price 5K
Notes
44
16
1,256
$2.72
 
44
32
2,560
$2.89
 

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
ATMEGA32U4-AU
0.273300
1.187500
44
TQFP
10x10x1mm
Matte Tin
e3
ATMEGA32U4-AUR
0.273300
0.748333
44
TQFP
10x10x1mm
Matte Tin
e3
ATMEGA32U4RC-AU
0.273300
1.187500
44
TQFP
10x10x1mm
Matte Tin
e3
ATMEGA32U4RC-AUR
0.273300
0.748333
44
TQFP
10x10x1mm
Matte Tin
e3
ATMEGA32U4RC-MUR
0.132100
0.262500
44
VQFN
7x7x1mm
Matte Tin
e3
ATMEGA32U4-MU
0.132100
0.600962
44
VQFN
7x7x1mm
Matte Tin
e3
ATMEGA32U4RC-MU
0.132100
0.600962
44
VQFN
7x7x1mm
Matte Tin
e3
ATMEGA32U4-MUR
0.132100
0.262500
44
VQFN
7x7x1mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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