ISP Programmer

ISP Programmer Please buy USB programming cables at last and start using AVR Studio, avrdude etc. The source code is now abandonware and it will stay on Sourceforge for ages. This software supports programming of Atmel microcontrollers 89Sxx (`51), ATtiny, ATmega and 90Sxx (AVR). It can erase built-in Flash and EEPROM me
ISP Programmer - schematic

mories as well as read and program them. ISP Programmer also supports serial Atmel DataFlash memories. Communication with devices is made serially in system (ISP - In-System Programming) without the need to pull the chip out of the socket or desolder it. The microcontroller you want to program needs to be connected to the printer port (LPT) of the computer (directly with wires, without STROBE signal), according to this list: Microcontroller LPT port LPT port signal signal pin number [STROBE] - STROBE 1 RESET - AUTOLF 14 MOSI - INIT 16 SCK - SLCT-IN 17 MISO - ACK 10 GND - GND 25 STROBE signal connected to pin 1 of LPT port is used to control enabling of 3-state buffers of programming serial bus (SCK, MISO, MOSI). Using it is optional. But in case of connecting LPT port directly to microcontroller pins, you should use the same logic levels (ground / 5V) as LPT port in host and verify that programming would not brake the normal operation of the peripherials connected to this microcontroller. For example programming signals should not be connected to the enable pin of the LCD. With the ISP Programmer you are able to use any programming cable pinout, including AT-Prog, SI-Prog, UISP, STK200/300 and AEC ISP. You can choose any pins of the LPT port for programming signals, as well as define arbitrary RESET signal level. AT90S1200, AT90S2313, AT90S2323, AT90S2333, AT90S2343, AT90S4414, AT90S4433, AT90S4434, AT90S8515, AT90S8535,...

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