AT90USB646-MUR Atmel, AT90USB646-MUR Datasheet - Page 309

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

Specifications of AT90USB646-MUR

• 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-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• 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

7593K–AVR–11/09
• 7-3 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 2-0 - PBYCT10:8 - Byte count (high) Bits
Set by hardware. This field is the MSB of the byte count of the FIFO endpoint. The LSB part is
provided by the UPBCLX register.
• 7-0 - PBYCT7:0 - Byte Count (low) Bits
Set by the hardware. PBYCT10:0 is:
- (for OUT Pipe) increased after each writing into the Pipe and decremented after each byte
sent,
- (for IN Pipe) increased after each byte received by the host, and decremented after each byte
read by the software.
• 7 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 6-0 - PINT6:0 - Pipe Interrupts Bits
Set by hardware when an interrupt is triggered by the UPINTX register and if the corresponding
endpoint interrupt enable bit is set.
Cleared by hardware when the interrupt source is served.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
PBYCT7
7
0
R
7
0
7
0
-
-
PBYCT6
PINT6
6
0
-
R
6
0
6
0
PBYCT5
PINT5
5
0
-
R
5
0
5
0
PBYCT4
PINT4
4
0
-
R
4
0
4
0
PBYCT3
PINT3
3
0
-
R
3
0
3
0
PBYCT10
PBYCT2
PINT2
R
2
0
R
AT90USB64/128
2
0
2
0
PBYCT9
PBYCT1
PINT1
1
R
0
R
1
0
1
0
PBYCT8
PBYCT0
PINT0
R
0
0
R
0
0
0
0
UPBCHX
UPBCLX
UPINT
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