AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 248

• Manufacturer Part Number: AT90USB1286-16MU
• Description: Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
• Manufacturer: ATMEL [ATMEL Corporation]

21.3
248
Typical Application Implementation
AT90USB64/128
Figure 21-1. USB controller Block Diagram overview
Depending on the USB operating mode (Device only, Reduced Host or OTG mode) and target
application power supply, the AT90USB64/128 requires different hardware typical
implementations.
Figure 21-2. Operating modes versus frequency and power-supply
VCC min
5.5
4.5
3.4
3.0
2.7
0
VCC (V)
USB operationnal
with internal regulator
USB operationnal
without internal regulator
USB not operationnal
UCAP
VBUS
D-
D+
UID
USB Regulator
Recovery
DPLL
Clock
Max
Operating Frequency (MHz)
UVCC
Interface
USB
16 MHz
8 MHz
2 MHz
clk
48MHz
AVCC
PLL
24x
clk
2MHz
USB DPRAM
PLL clock
Prescaler
On-Chip
CPU
XTAL1
7593A–AVR–02/06