AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 302

• 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

302
AT90USB64/128
• 1 - P1RST - Pipe 1 Reset
Set this bit to 1 and reset this bit to 0 to reset the Pipe 1.
• 0 - P0RST - Pipe 0 Reset
Set this bit to 1 and reset this bit to 0 to reset the Pipe 0.
• 7 - Reserved
The value read from this bit is always 0. Do not set this bit.
• 6 - PFREEZE - Pipe Freeze
Set this bit to Freeze the Pipe requests generation.
Clear this bit to enable the Pipe request generation.
This bit is set by hardware when:
- the pipe is not configured
- a STALL handshake has been received on this Pipe
- An error occurs on the Pipe (UPINTX.PERRI = 1)
- (INRQ+1) In requests have been processed
This bit is set at 1 by hardware after a Pipe reset or a Pipe enable.
• 5 - INMODE - IN Request mode
Set this bit to allow the USB controller to perform infinite IN requests when the Pipe is not frozen.
Clear this bit to perform a pre-defined number of IN requests. This number is stored in the UIN-
RQX register.
• 4 - Reserved
The value read from this bit is always 0. Do not set this bit.
• 3 - RSTDT - Reset Data Toggle
Set this bit to reset the Data Toggle to its initial value for the current Pipe.
Cleared by hardware when proceed. Clearing by software has no effect.
• 2 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 1 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 0 - PEN - Pipe Enable
Set to enable the Pipe.
Bit
Read/Write
Initial Value
7
0
-
PFREEZE
RW
6
0
INMODE
RW
5
0
4
0
-
RSTDT
RW
3
0
2
0
-
1
0
-
PEN
RW
0
0
7593K–AVR–11/09
UPCONX