AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 247

• Manufacturer Part Number: AT90USB647-MU
• Description: MCU, 8BIT, 64K FLASH, USB, 64QFN
• Manufacturer: Atmel

Specifications of AT90USB647-MU

• Controller Family/series: AT90
• No. Of I/o's: 48
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 16MHz
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 64KB
• Oscillator Type: External, Internal
• Package: 64QFN EP
• Device Core: AVR
• Family Name: AT90
• Maximum Speed: 20 MHz
• Ram Size: 4 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 48
• Interface Type: SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 4
• Lead Free Status / Rohs Status: Details

21.3
21.3.1
21.3.1.1
7593K–AVR–11/09
Typical Application Implementation
Device mode
Bus Powered device
Depending on the USB operating mode (Device only, Reduced Host or OTG mode) and on the
target application power supply, the AT90USB64/128 require different hardware typical
implementations.
Figure 21-2. Operating modes versus frequency and power-supply
Figure 21-3. Typical Bus powered application with 5V I/O
VBUS
UVSS
VCC min
UDP
UDM
UID
5.5
4.5
3.6
3.4
3.0
2.7
0
VCC (V)
USB compliant,
with internal regulator
Rs=22
Rs=22
USB not operational
1µF
USB compliant,
without internal regulator
UCAP
VBUS
UGND
D+
D-
UID
UVCC
XTAL1
XTAL2
Max
Operating Frequency (MHz)
AVCC
GND
16 MHz
8 MHz
2 MHz
AT90USB64/128
VCC
GND
247