Atmega. 32 vs At. Real time programming. Hi,I have project in which i have to interface 5. Initially i used TWI to interface 5. AT8. 9C5. 1. I was wondering whats the major difference in the two MCUs in relative comparison to which extent i can reuse my code with reprogramming the scenario while taking new MCU in consideration. Moreover i want to program my MCU in time like that from the softwaredatabase i send settings to MCU to take temperature readings after 1. I want to make this time variable via software running on remote end without takingout the MCU and redoing the entire code burning. Please put light. You all are nice people. AT8. 9C5. 1 Programmer Free Microcontroller Projects. Dear sir Thank you for your answer. But What is your openuin about this cct In ATMEL 8. Architecture Application Notes Using a personal Computer to program the AT8. C5. 2LV5. 1LV5. C1. C2. 05. GOD bless yousarmad. Listing Program At89s51 Vs At89c51 DatasheetAT89C51 Programmer. I want to use asimple cct like yours and program the AT89C51 atmel. I dont have at89s51 I want only AT89C51. AT89C51 is an 8bit microcontroller and belongs to Atmels. AT89C51 Microcontroller. Written By. It can be erased and program to a maximum of 1000. Listing Program At89s51 Vs At89c51 PinI need the simplest programmer for my MCU AT89C51. Glyphicons Pro. AT89s51. MCU. I want the the program to be directly.