AT90USB646-AUR Atmel, AT90USB646-AUR Datasheet - Page 258

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

Specifications of AT90USB646-AUR

• 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-TQFP, 64-VQFP
• 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

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PAD suspend
AT90USB64/128
Note that:
The next figures illustrates the pad behaviour:
Figure 21-15. Pad behaviour
The SUSPI flag indicated that a suspend state has been detected on the USB bus. This flag
automatically put the USB pad in Idle. The detection of a non-idle event sets the WAKEUPI flag
and wakes-up the USB pad.
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 data of Pipe/Endpoint 0 are never lost whatever the activation or deactivation of the
• Deactivate and reactivate the same Pipe/Endpoint with the same parameters does not lead
• CFGOK is set by hardware even in the case where there is a “conflict” in the memory
• In the “idle” mode, the pad is put in low power consumption mode.
• In the “active” mode, the pad is working.
both Pipe/Endpoint 4 and 5 use a common area. The data of those endpoints are potentially
lost.
higher Pipe/Endpoint. Its data is lost if it is deactivated.
to a “slide” of the higher endpoints. For those endpoints, the data are preserved.
allocation.
SUSPI
WAKEUPI
PAD status
Active
Suspend detected = USB pad power down
Idle mode
Resume = USB pad wake-up
| DETACH=1
| suspend
USBE=0
Power Down
& DETACH=0
& suspend
USBE=1
Clear Suspend by software
Clear Resume by software
Active mode
Active
7593K–AVR–11/09