ATMEGA32U4-MU Atmel, ATMEGA32U4-MU Datasheet - Page 7
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ATMEGA32U4-MU
Manufacturer Part Number
ATMEGA32U4-MU
Description
MCU AVR 32K FLASH 16MHZ 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32U4-MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN
Package
44QFN EP
Device Core
AVR
Family Name
ATmega
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
26
Interface Type
EBI/I2S/SPI/TWI/USART/USB
On-chip Adc
12-chx10-bit
Number Of Timers
5
For Use With
ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA32U4-16MU
ATMEGA32U4-16MU
ATMEGA32U4-16MU
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA32U4-MUR
Manufacturer:
UCC
Quantity:
1 001
6.4
7. PC Software
8. Limitations
9. Related Documents
7820A–AVR–11/08
Input Terminal N°1
Input Terminal N°4
USB stream
Microphone
usb_descriptor.c
1 channel
1 channel
The audio topology, which is put in USB descriptor, is explained in the AUDIO specification
(http://www.usb.org/developers/devclass_docs/audio10.pdf). The audio topology chose for this
demo is described in the following figure.
Figure 6-3.
The USB audio application does not require any PC software. Under Windows
standard recorder “Sound Recorder” to try the microphone feature.
If the speaker is running at 32KHz then recording and playback can’t be running at same time,
due to linited CPU bandwidth when clocked at 8MHz.
AVR USB Datasheet (doc 7766)
USB Software Library for AT90USBxxx Microcontrollers (doc 7675)
USB Audio class specification (www.usb.org)
Audio Function Topology from demo
Control volume and mute
Control volume and mute
Feature Unit N°2
Feature Unit N°5
Ouput Terminal N°3
Ouput Terminal N°6
USB stream
®
Speaker
, you can use the
AVR298
7