ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 11
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ATmega32U2
Manufacturer Part Number
ATmega32U2
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32U2
Flash (kbytes)
32 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
22
Ext Interrupts
20
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
5
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
4.7.1
4.7.2
4.7.3
7618C–AVR–07/08
First Request from Host
Second Request from Host
Answers from the Device
The Host sends a DFU Download request with a Display command in the data field.
The Host sends a DFU Upload request.
The device sends to the Host the firmware from the specified start address to the specified end
address.
Command Identifier
Id_display_data
OUT
SETUP
IN
IN
IN
03h
data[0]
SETUP
OUT
IN
00h
01h
02h
ZLP
DFU_UPLOAD
Firmware Packet 1
Firmware Packet 2
Firmware Packet n
data[1]
start_address
data[2]
DFU_DNLOAD
Display_Data (6 bytes)
ZLP
data[3]
end_address
data[4]
Display EEPROM Data
Blank Check in FLASH
Display FLASH Data
Description
11