AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 264

• 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

264
AT90USB64/128
• 3 – SRPSEL: SRP Selection Bit
Set to choose VBUS pulsing as SRP method.
Clear to choose data line pulsing as SRP method.
• 2 – VBUSHWC: VBus Hardware Control Bit
Set to disable the hardware control over the UVCON pin.
Clear to enable the hardware control over the UVCON pin.
See for more details
• 1 – VBUSREQ: VBUS Request Bit
Set to assert the UVCON pin in order to enable the VBUS power supply generation. This bit
shall be used when the controller is in the Host mode.
Cleared by hardware when VBUSRQC is set.
• 0 – VBUSRQC: VBUS Request Clear Bit
Set to deassert the UVCON pin in order to enable the VBUS power supply generation. This bit
shall be used when the controller is in the Host mode.
Cleared by hardware immediately after the set.
• 7 – Reserved
This bit is reserved and always set.
• 6-5 – PAGE: Timer page access Bit
Set/clear to access a special timer register. See Section 21.9, page 259 for more details.
• 4-3 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 1-0 – VALUE: Value Bit
Set to initialize the new value of the timer. See Section 21.9, page 259 for more details.
• 7-6 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 5 – STOE: Suspend Time-out Error Interrupt Enable Bit
Set to enable the STOI interrupt. Clear to disable the STOI interrupt.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
R
7
0
-
R
7
1
-
R
6
0
-
R/W
6
0
PAGE
STOE
R/W
5
0
R/W
0
5
HNPERRE
R/W
4
0
R
4
0
-
ROLEEXE
R/W
R
3
0
3
0
-
BCERRE
R/W
2
0
R/W
-
2
0
R/W
VBERRE
1
0
R/W
VALUE
1
0
R/W
0
0
SRPE
R/W
0
0
OTGTCON
7593K–AVR–11/09
OTGIEN