at90usb647-16au ATMEL Corporation, at90usb647-16au Datasheet - Page 4

• Manufacturer Part Number: at90usb647-16au
• Description: At90usb1286 8-bit Avr Microcontroller With 64/128k Bytes Of Isp Flash And Usb Controller
• Manufacturer: ATMEL Corporation

1.1
2. Overview
4
Disclaimer
AT90USB64/128
(PDO/PCINT3/MISO) PB3
(INT.7/AIN.1/UVcon) PE7
(PDI/PCINT2/MOSI) PB2
Figure 1-2.
Note:
Typical values contained in this datasheet are based on simulations and characterization of
other AVR microcontrollers manufactured on the same process technology. Min and Max values
will be available after the device is characterized.
The AT90USB64/128 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced
RISC architecture. By executing powerful instructions in a single clock cycle, the
(PCINT4/OC.2A) PB4
(PCINT5/OC.1A) PB5
(PCINT6/OC.1B) PB6
(PCINT1/SCLK) PB1
(SS/PCINT0) PB0
(INT.6/AIN.0) PE6
The large center pad underneath the MLF packages is made of metal and internally connected to
GND. It should be soldered or glued to the board to ensure good mechanical stability. If the center
pad is left unconnected, the package might loosen from the board.
(IUID) PE3
UGnd
UCap
UVcc
VBus
Pinout AT90USB64/128-QFN
D+
D-
(64-lead QFN top view)
INDEX CORNER
AT90USB128
PA3 (AD3)
PA4 (AD4)
PA5 (AD5)
PA6 (AD6)
PA7 (AD7)
PE2 (ALE/HWB)
PC7 (A15/IC.3/CLKO)
PC6 (A14/OC.3A)
PC5 (A13/OC.3B)
PC4 (A12/OC.3C)
PC3 (A11/T.3)
PC2 (A10)
PC1 (A9)
PC0 (A8)
PE1 (RD)
PE0 (WR)
7593GS–AVR–03/08