ATMEGA32U2-MUR Atmel, ATMEGA32U2-MUR Datasheet - Page 194
ATMEGA32U2-MUR
Manufacturer Part Number
ATMEGA32U2-MUR
Description
MCU AVR 32K FLASH 16MHZ 32VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32U2-MUR
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
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
1K 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
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20.8
20.9
7799D–AVR–11/10
D+/D- Read/write
USB Software Operating modes
Moreover, the pad can also be put in the Idle mode if the DETACH bit is set. It come back in the
Active mode when the DETACH bit is cleared.
The level of D+ and D- can be read and written using the UPOE register. The USB controller has
to be enabled to write a value. For read operation, the USB controller can be enabled or
disabled.
Depending on the USB operating mode, the software should perform some of the following
operations:
Power On the USB interface
Power Off the USB interface
Suspending the USB interface
• Configure PLL interface
• Enable PLL
• Check PLL lock
• Enable USB interface
• Configure USB interface (USB Endpoint 0 configuration)
• Attach USB device
• Detach USB device
• Disable USB interface
• Disable PLL
• Clear Suspend Bit
• Set USB suspend clock
• Disable PLL
SUSPI
WAKEUPI
PAD status
Active
Suspend detected = USB pad power down
Resume = USB pad wake-up
Power Down
ATmega8U2/16U2/32U2
Clear Suspend by software
Clear Resume by software
Active
194
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