ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 305
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
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ATmega8U2/16U2/32U2
19 USART in SPI Mode ............................................................................. 176
20 USB Controller ..................................................................................... 185
21 USB Device Operating modes ............................................................ 197
18.2Overview .............................................................................................................148
18.3Clock Generation .................................................................................................149
18.4Frame Formats ....................................................................................................152
18.5USART Initialization ............................................................................................154
18.6Data Transmission – The USART Transmitter ....................................................155
18.7Data Reception – The USART Receiver .............................................................157
18.8Asynchronous Data Reception ............................................................................161
18.9Multi-processor Communication Mode ................................................................164
18.10Hardware Flow Control ......................................................................................165
18.11Register Description ..........................................................................................167
18.12Examples of Baud Rate Setting ........................................................................171
19.1Features ..............................................................................................................176
19.2Overview .............................................................................................................176
19.3Clock Generation .................................................................................................176
19.4SPI Data Modes and Timing ...............................................................................177
19.5Frame Formats ....................................................................................................178
19.6Data Transfer ......................................................................................................179
19.7Register Description ............................................................................................181
19.8AVR USART MSPIM vs. AVR SPI ......................................................................183
20.1Features ..............................................................................................................185
20.2Overview .............................................................................................................185
20.3USB Module Powering Options ...........................................................................186
20.4General Operating Modes ...................................................................................189
20.5Power modes ......................................................................................................191
20.6Memory management .........................................................................................192
20.7PAD suspend ......................................................................................................193
20.8D+/D- Read/write .................................................................................................194
20.9USB Software Operating modes .........................................................................194
20.10Registers Description ........................................................................................195
21.1Overview .............................................................................................................197
21.2Power-on and reset .............................................................................................197
21.3Endpoint reset .....................................................................................................197
7799D–AVR–11/10
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