ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 185
ATMEGA16U2-16AU
Manufacturer Part Number
ATMEGA16U2-16AU
Description
8-bit Microcontrollers - MCU 16K Flash
Manufacturer
Atmel
Datasheet
1.ATMEGA16U2-16AU.pdf
(310 pages)
Specifications of ATMEGA16U2-16AU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
AVR
Data Bus Width
8 bit
Program Memory Size
16 KB
Data Ram Size
1.25 KB
Data Rom Size
512 B
Program Memory Type
Flash
Factory Pack Quantity
1250
- Current page: 185 of 310
- Download datasheet (5Mb)
20. USB Controller
20.1
20.2
7799D–AVR–11/10
Features
Overview
•
•
•
The USB controller provides the hardware to implement a USB2.0 compliant Full-Speed USB
device in the ATmega8U2/16U2/32U2. A simplified block diagram of the USB controller is shown
in
The USB controller requires a 48 MHz ±0.25% reference clock for USB Full-Speed compliance.
This clock is generated by an internal PLL. The reference clock to the PLL must be provided
from an external crystal or an external clock input. Only these two clock options will be able to
provide a reference clock within the accuracy and jitter requirements of the USB specification.
S e e s e c t i o n
ATmega8U2/16U2/32U2 system clock and clock options.
To comply to the USB specifications electrical characteristics, the USB Pads (D+ or D-) must be
powered at 3.0V to 3.6V. As the ATmega8U2/16U2/32U2 can be powered up to 5.5V, an inter-
nal regulator is provided to correctly power the USB pads. See
on page 186
Figure 20-1. USB controller Block Diagram
USB 2.0 Full-speed device
Ping-pong mode (dual bank), with transparent switch
176 bytes of DPRAM
Figure 20-1 on page
– 1 endpoint of 64 bytes max (default control endpoint)
– 2 endpoints of 64 bytes max (one bank)
– 2 endpoints of 64 bytes max (one or two banks)
for details on the powering options available for the USB controller
“ S y s t e m C l o c k a n d C l o c k O p t i o n s ” o n p a g e 2 6
UCAP
D-
D+
185.
Recovery
Regulator
DPLL
Clock
UVCC
Interface
USB
clk
48MHz
ATmega8U2/16U2/32U2
PLL
6x
clk
8MHz
“USB Module Powering Options”
USB DPRAM
PLL clock
Prescaler
On-Chip
XTAL1
CPU
f o r d e t a i l s o n t h e
185
Related parts for ATMEGA16U2-16AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ 5V 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ 5V 44-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ 5V 40DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 16K FLASH 16MHZ 44-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 40-DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 44-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 40-DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 44-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 44-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU 8BIT 16KB FLASH 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 16K FLASH 16MHZ 44-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 44-TQFP
Manufacturer:
Atmel
Datasheet: