AT90USB647 Atmel Corporation, AT90USB647 Datasheet - Page 80

• 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

10.3.3
80
AT90USB64/128
Alternate Functions of Port B
Note:
Table 10-5.
The Port B pins with alternate functions are shown in
Table 10-6.
The alternate pin configuration is as follows:
• OC0A/OC1C/PCINT7, Bit 7
OC0A, Output Compare Match A output: The PB7 pin can serve as an external output for the
Timer/Counter0 Output Compare. The pin has to be configured as an output (DDB7 set “one”) to
serve this function. The OC0A pin is also the output pin for the PWM mode timer function.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
1. ADA is short for ADdress Active and represents the time when address is output. See
PA3/AD3
SRE
~(WR | ADA) •
PORTA3 • PUD
SRE
WR | ADA
SRE
A3 • ADA | D3
OUTPUT • WR
0
0
D3 INPUT
–
nal Memory Interface” on page 30
Alternate Functions
OC0A/OC1C/PCINT7 (Output Compare and PWM Output A for Timer/Counter0,
Output Compare and PWM Output C for Timer/Counter1 or Pin Change Interrupt 7)
OC1B/PCINT6 (Output Compare and PWM Output B for Timer/Counter1 or Pin
Change Interrupt 6)
OC1A/PCINT5 (Output Compare and PWM Output A for Timer/Counter1 or Pin
Change Interrupt 5)
OC2A/PCINT4 (Output Compare and PWM Output A for Timer/Counter2 or Pin
Change Interrupt 4)
PDO/MISO/PCINT3 (Programming Data Output or SPI Bus Master Input/Slave
Output or Pin Change Interrupt 3)
PDI/MOSI/PCINT2 (Programming Data Input orSPI Bus Master Output/Slave Input
or Pin Change Interrupt 2)
SCK/PCINT1 (SPI Bus Serial Clock or Pin Change Interrupt 1)
SS/PCINT0 (SPI Slave Select input or Pin Change Interrupt 0)
Overriding Signals for Alternate Functions in PA3..PA0
Port B Pins Alternate Functions
PA2/AD2
SRE
~(WR | ADA) •
PORTA2 • PUD
SRE
WR | ADA
SRE
A2• ADA | D2
OUTPUT • WR
0
0
D2 INPUT
–
for details.
PA1/AD1
SRE
~(WR | ADA) •
PORTA1 • PUD
SRE
WR | ADA
SRE
A1 • ADA | D1
OUTPUT • WR
0
0
D1 INPUT
–
Table
10-6.
PA0/AD0
SRE
~(WR | ADA) •
PORTA0 • PUD
SRE
WR | ADA
SRE
A0 • ADA | D0
OUTPUT • WR
0
0
D0 INPUT
–
7593K–AVR–11/09
“Exter-