can you provide another link .Secondly, my desktop serial port is suppling negative voltage instead of positive voltage . 74HCT541 make google_ad_slot = "1014171837"; 1. Z Zordon New Member Jul 14, 2007 #3 It simply consists of an ATMega8 and a couple of passive components. I used ArduinoISP to program the Atmega8. either of It's a Bootloader for Microchip, Atmel, NXP, TI and 8051 devices. attach 28 FLIP programming is done through the inbuilt UART based boot loader, which is located in the device's 2KB Boot ROM space. dearsir,can i use atmega8L instead of atmega8. use any connector you like or just don't use any one of then you are free to directly solder the usb cable wire on the the PCB. ANWEJ have you burned the correct firmware into atmega8 i mean the firmware which do support 8051.and which software you are using to burn the firmware in to the target 8051 i recommend you to use progisp1.68 download link is there n try to short the jumper jp3 on pin25 for slow programming. For those devices which doesn't have bootloader support, the following third . it's blank actually.so after step 4 only your programmer is ready to usenow you can connect it to your 8051 mcu to program your firmware into the 8051 mcuif still have any question please feel free to ask, and the fuse bit configactually have a prog isp usb avr programmer that has an ic base with 40 pins so how do i go about doing things. But I am confused as there as four following types of ATMETGA8L are available.1 ATMEGA8L-8AU IC AVR MCU 8K 8MHZ 3V 32TQFP2 ATMEGA8L-8MU IC AVR MCU 8K 8MHZ 3V 32-QFN3 ATMEGA8L-8MUR MCU AVR 8KB FLASH 8MHZ 32QFN4 ATMEGA8L-8PU IC AVR MCU 8K 8MHZ 3V 28DIPNow please guide me which one to buy for making this your USB programmer and whyPrashant Gautam. if the hardware is detected by the PC as USBasp then i guess firmware and fuse bits are fine. ATMEL AT89S51is an 8051 variant with serial programming interface for its 4KB on-chip flash ROM. Copyright 1999-2020 sir is this right '''ATMEGA8-16PU PDIP 28P3 28 ''' ??? ISP wat do it signify?? Progisp says write sucessful but actually microcontroll does not perform work when used as nothing is written on it . The whole 8051 memory and all pins are available to you. necessary Actually in datasheet it is written that max frequency for ATmega8L is 8 MHz and for ATmega8 is 16 MHz. started the Programmer is capable to support all currently available microcontrollers of the MCS51 series (up to 40 pins) and the AVR microcontrollers (8-40 pins) using parallel and serial algorithms. the SPI