466130 Datasheet, PDF (4/36 Pages) ATMEL Corporation – 8-bit Microcontroller with 64/128K Bytes of ISP Flash

Figure 1-2. Pinout ATmega32U6/AT90USB64/128-QFN
(INT.6/AIN.0) PE6 1
(INT.7/AIN.1/UVcon) PE7 2
UVcc 3
D- 4
D+ 5
UGnd 6
UCap 7
VBus 8
(IUID) PE3 9
(SS/PCINT0) PB0 10
(PCINT1/SCLK) PB1 11
(PDI/PCINT2/MOSI) PB2 12
(PDO/PCINT3/MISO) PB3 13
(PCINT4/OC.2A) PB4 14
(PCINT5/OC.1A) PB5 15
(PCINT6/OC.1B) PB6 16
INDEX CORNER
ATmega32U6
AT90USB128/64
(64-lead QFN top view)
48 PA3 (AD3)
47 PA4 (AD4)
46 PA5 (AD5)
45 PA6 (AD6)
44 PA7 (AD7)
43 PE2 (ALE/HWB)
42 PC7 (A15/IC.3/CLKO)
41 PC6 (A14/OC.3A)
40 PC5 (A13/OC.3B)
39 PC4 (A12/OC.3C)
38 _{PC3 (A11/T.3)}
37 _{PC2 (A10)}
36 _{PC1 (A9)}
35 _{PC0 (A8)}
34 _{PE1 (RD)}
33 _{PE0 (WR)}
Note:
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.
1.1 Disclaimer
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.
2. Overview
The ATmega32U6/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
4 ATmega32U6/AT90USB64/128
7593JS–AVR–03/09