AT90USB647 Atmel Corporation, AT90USB647 Datasheet - Page 280

• Manufacturer Part Number: AT90USB647
• Manufacturer: Atmel Corporation

Specifications of AT90USB647

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 48
• Ext Interrupts: 16
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 10
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

280
AT90USB64/128
See Section 22.8, page 270 for more details.
• 3 - EORSTI - End Of Reset Interrupt Flag
Set by hardware when an “End Of Reset” has been detected by the USB controller. This triggers
an USB interrupt if EORSTE is set.
Shall be cleared by software. Setting by software has no effect.
• 2 - SOFI - Start Of Frame Interrupt Flag
Set by hardware when an USB “Start Of Frame” PID (SOF) has been detected (every 1 ms).
This triggers an USB interrupt if SOFE is set..
• 1 - Reserved
The value read from this bits is always 0. Do not set this bit
• 0 - SUSPI - Suspend Interrupt Flag
Set by hardware when an USB “Suspend” ‘idle bus for 3 frame periods: a J state for 3 ms) is
detected. This triggers an USB interrupt if SUSPE is set.
Shall be cleared by software. Setting by software has no effect.
See Section 22.8, page 270 for more details.
The interrupt bits are set even if their corresponding ‘Enable’ bits is not set.
• 7 - Reserved
The value read from this bits is always 0. Do not set this bit.
• 6 - UPRSME - Upstream Resume Interrupt Enable Bit
Set to enable the UPRSMI interrupt.
Clear to disable the UPRSMI interrupt.
• 5 - EORSME - End Of Resume Interrupt Enable Bit
Set to enable the EORSMI interrupt.
Clear to disable the EORSMI interrupt.
• 4 - WAKEUPE - Wake-up CPU Interrupt Enable Bit
Set to enable the WAKEUPI interrupt. For correct interrupt handle execution, this interrupt
should be enable only before entering power-down mode.
Clear to disable the WAKEUPI interrupt.
• 3 - EORSTE - End Of Reset Interrupt Enable Bit
Set to enable the EORSTI interrupt. This bit is set after a reset.
Clear to disable the EORSTI interrupt.
Bit
Read/Write
Initial Value
7
0
-
UPRSME
6
0
EORSME
5
0
WAKEUPE
4
0
EORSTE
3
0
SOFE
2
0
1
0
-
SUSPE
7593K–AVR–11/09
0
0
UDIEN