ATMEGA8U2-MU Atmel, ATMEGA8U2-MU Datasheet - Page 140
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
- Current page: 140 of 309
- Download datasheet (6Mb)
7799D–AVR–11/10
When the SPI is enabled, the data direction of the MOSI, MISO, SCK, and SS pins is overridden
according to
Functions” on page
Table 17-1.
Note:
The following code examples show how to initialize the SPI as a Master and how to perform a
simple transmission. DDR_SPI in the examples must be replaced by the actual Data Direction
Register controlling the SPI pins. DD_MOSI, DD_MISO and DD_SCK must be replaced by the
actual data direction bits for these pins. E.g. if MOSI is placed on pin PB5, replace DD_MOSI
with DDB5 and DDR_SPI with DDRB.
MOSI
MISO
SCK
Pin
SS
1. See
direction of the user defined SPI pins.
Table
SPI Pin Overrides
“Alternate Functions of Port B” on page 74
Direction, Master SPI
User Defined
Input
User Defined
User Defined
17-1. For more details on automatic port overrides, refer to
72.
(1)
ATmega8U2/16U2/32U2
for a detailed description of how to define the
Direction, Slave SPI
Input
User Defined
Input
Input
“Alternate Port
140
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