AT90USB82 Atmel Corporation, AT90USB82 Datasheet - Page 2
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AT90USB82
Manufacturer Part Number
AT90USB82
Description
Manufacturer
Atmel Corporation
Specifications of AT90USB82
Flash (kbytes)
8 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
21
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)
0.5
Eeprom (bytes)
512
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
Part Number:
AT90USB82-16MU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
2. Bootloader Environment
3. Bootloader Activation
2
The bootloader is located in the boot section of the on-chip Flash memory, it manages the USB
communication protocol and performs read/write operations to the on-chip memories
(Flash/EEPROM).
The USB bootloader is loaded in the “Bootloader Flash Section” of the on-chip Flash memory.
The size of the bootloader flash section must be larger than the bootloader size.USB products
are factory configured with the default on-chip USB bootloader and the required bootsection
configuration.
Table 2-1.
Figure 2-1.
As specified in the AT90USB datasheet, the bootloader can be activated by one of the following
conditions:
• Regular application execution: A jump or call from the user application program. This may
be initiated by a trigger such as a command received via USB, USART or SPI and decoded
by the application.
AT90USB1287
AT90USB1286
AT90USB647
AT90USB646
AT90USB162
ATmega32U4
ATmega16U4
AT90USB82
Product
USB Bootloader Parameters
Physical Environment
Flash Bootsection Size
Configuration
4 KWord
2 KWord
DFU Class
0x03EB / 0x2FFB
0x03EB / 0x2FF9
0x03EB / 0x2FFA
0x03EB / 0x2FF7
0x03EB / 0x2FF4
0x03EB / 0x2FF3
VID / PID
USB Bootloader
Interface
in Boot section
USB
Bootloader Start Address
Read/Write
Read/Write
(word address)
0x7800
0x1800
0x0800
0x3800
0x0800
0xf000
Application section
EEPROM Data
7618C–AVR–07/08
Flash