Reverse AVR Microcomputer ATmega16U2 Flash Program and copy atmel avr mcu atmega16u2 firmware to new microcontroller, the heximal firmware of original atmega16u2 microprocessor can be restored;
Reverse AVR Microcomputer ATmega16U2 Flash Program and copy atmel avr mcu atmega16u2 firmware to new microcontroller, the heximal firmware of original atmega16u2 microprocessor can be restored
The ATmega8U2/16U2/32U2 are supported with a full suite of program and system develop- ment tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits.
AVCC is the supply voltage pin (input) for all analog features (Analog Comparator, PLL). It should be externally connected to VCC through a low-pass filter.
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running.
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Port B also serves the functions of various special features of the ATmega8U2/16U2/32U2 as listed on page 74. Port D serves as analog inputs to the analog comparator.
Port D also serves as an 8-bit bi-directional I/O port, if the analog comparator is not used (con- cerns PD2/PD1 pins). Port pins can provide internal pull-up resistors (selected for each bit). The Port D output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in “System Control and Reset” on page 47. Shorter pulses are not guaranteed to generate a reset. This pin alternatively serves as debugWire channel or as generic I/O. The configuration depends on the fuses RST- DISBL and DWEN.