ATMEGA8U2-MU Atmel, ATMEGA8U2-MU Datasheet - Page 305
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ATMEGA8U2-MU
Manufacturer Part Number
ATMEGA8U2-MU
Description
MCU AVR 8K FLASH USB 32-VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8U2-MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Processor Series
ATMEGA8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
SPI, UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
22
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
Package
32QFN EP
Device Core
AVR
Family Name
ATmega
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
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- Download datasheet (6Mb)
iv
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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