AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 255

• 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

21.5
21.5.1
21.5.2
7593K–AVR–11/09
Power modes
Idle mode
Power down
Figure 21-13. USB General and OTG Controller Interrupt System
There are 2 kind of interrupts: processing (i.e. their generation are part of the normal processing)
and exception (errors).
Processing interrupts are generated when such events occur :
Exception Interrupts are generated with the following events :
In this mode, the CPU core is halted (CPU clock stopped). The Idle mode is taken wether the
USB controller is running or not. The CPU “wakes up” on any USB interrupts.
In this mode, the oscillator is stopped and halts all the clocks (CPU and peripherals). The USB
controller “wakes up” when:
• USB ID Pad change detection (insert, remove)(IDTI)
• VBUS plug-in detection (insert, remove) (VBUSTI)
• SRP detected(SRPI)
• Role Exchanged(ROLEEXI)
• Drop on VBus Detected(VBERRI)
• Error during the B-Connection(BCERRI)
• HNP Error(HNPERRI)
• Time-out detected during Suspend mode(STOII)
• the WAKEUPI interrupt is triggered in the Peripheral mode (HOST cleared),
OTGINT.5
OTGINT.4
OTGINT.3
OTGINT.2
OTGINT.1
OTGINT.0
USBINT.1
USBINT.0
ROLEEXI
HNPERRI
BCERRI
VBUSTI
VBERRI
STOI
SRPI
IDTI
USBCON.1
USBCON.0
OTGIEN.5
OTGIEN.4
ROLEEXE
OTGIEN.3
OTGIEN.2
OTGIEN.1
OTGIEN.0
HNPERRE
BCERRE
VBERRE
VBUSTE
STOE
SRPE
IDTE
USB General & OTG
Asynchronous Interrupt source
(allows the CPU to wake up from power down mode)
Interrupt Vector
AT90USB64/128
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