Extract Microcontroller ATMEGA8515L Firmware from its secured memory which include the flash and eeprom, MCU ATmega8515L security fuse bit can be cut off by the focus ion beam technique after decapsulate the silicon package of microcontroller reverse engineering;
The ATmega8515 provides all the features of the AT90S4414/8515. In addition, several n e w f e a t u r e s a r e a d d e d . T h e A T m e g a 8 5 1 5 i s b a c k w a r d c o m p a t i b l e w i th AT90S4414/8515 in most cases. However, some incompatibilities between the two microcontrollers exist when Extract chip atmega8L firmware.
To solve this problem, an AT90S4414/8515 compatibility mode can be selected by programming the S8515C Fuse. ATmega8515 is 100% pin compatible with AT90S4414/8515, and can replace the AT90S4414/8515 on current printed circuit boards. However, the location of Fuse bits and the electrical characteristics differs between the two devices.
Programming the S8515C Fuse will change the following functionality: The timed sequence for changing the Watchdog Time-out period is disabled. See “Timed Sequences for Changing the Configuration of the Watchdog Timer” on page 53 for details.
The double buffering of the USART Receive Registers is disabled. See “AVR USART vs. AVR UART – Compatibility” on page 137 for details. PORTE(2:1) will be set as output, and PORTE0 will be set as input. Port A is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability when Extract MCU ATmega16 binary.
When pins PA0 to PA7 are used as inputs and are externally pulled low, they will source current if the internal pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running. 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. Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buffers have symmetrical drive characteristics with both high sink and source capability when Extract mcu atmega32 code.
As inputs, Port C pins that are externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port D is an 8-bit bi-directional I/O port with 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. Port E is an 3-bit bi-directional I/O port with internal pull-up resistors (selected for each bit).
The Port E output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port E pins that are externally pulled low will source current if the pull-up resistors are activated. The Port E pins are tri-stated when a reset condition becomes active, even if the clock is not running.
