AT90USB646-MUR Atmel, AT90USB646-MUR Datasheet - Page 422

• Manufacturer Part Number: AT90USB646-MUR
• Description: MCU AVR 64K FLASH 16MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® 90USBr

Specifications of AT90USB646-MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

31.12 BOD Levels
422
AT90USB64/128
2.54
2.52
2.48
2.46
2.44
2.42
3.4
3.2
2.8
2.6
2.5
3
-40
3
-30
Figure 31-19. USB Regulator Output Voltage vs. Input Voltage, Load=75 Ohms
Note:
Figure 31-20. BOD Voltage (2.4V level) vs. Temperature
Figure 31-21. BOD Voltage (3.4V level) vs. Temperature
-20
3.5
-10
The 75 Ohms load is equivalent to the maximum average consumption of the USB peripheral in
operation (full bus load)
0
4
10
Input Volta ge (V)
Te mpe ra ture (C
20
30
4.5
40
50
5
60
70
80
5.5
Rising Vcc
Falling Vcc
7593K–AVR–11/09
85
25
-40