466130 Datasheet, PDF (5/36 Pages) ATMEL Corporation – 8-bit Microcontroller with 64/128K Bytes of ISP Flash

ATmega32U6/AT90USB64/128
ATmega32U6/AT90USB64/128 achieves throughputs approaching 1 MIPS per MHz allowing
the system designer to optimize power consumption versus processing speed.
2.1 Block Diagram
Figure 2-1. Block Diagram
PF7 - PF0
PA7 - P A0
PC7 - PC0
VCC
GND
POR TF DRIVERS
DATA REGISTER
PORT F
DATA DIR.
REG. PORT F
POR TA DRIVERS
POR TC DRIVERS
DATA REGISTER
PORT A
DATA DIR.
REG. PORT A
DATA REGISTER
PORT C
8-BIT DA TA BUS
DATA DIR.
REG. PORT C
AVCC
AGND
AREF
JTAG TAP
ON-CHIP DEBUG
BOUNDARY-
SCAN
PROGRAMMING
LOGIC
ADC
PROGRAM
COUNTER
PROGRAM
FLASH
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
CONTROL
LINES
POR - BOD
RESET
ST ACK
POINTER
SRAM
GENERAL
PURPOSE
REGISTERS
X
Y
Z
ALU
ST ATUS
REGISTER
INTERNAL
OSCILLA TOR
W ATCHDOG
TIMER
MCU CONTROL
REGISTER
TIMER/
COUNTERS
INTERRUPT
UNIT
EEPROM
CALIB. OSC
OSCILLA TOR
TIMING AND
CONTROL
PLL
USART1
SPI
USB
TWO-WIRE SERIAL
INTERFACE
DATA REGISTER
PORTE
DATA DIR.
REG. PORTE
DATA REGISTER
PORTB
DATA DIR.
REG. PORTB
DATA REGISTER
PORTD
DATA DIR.
REG. PORTD
POR TE DRIVERS
POR TB DRIVERS
POR TD DRIVERS
PE7 - PE0
PB7 - PB0
PD7 - PD0
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