S stands for SEMI CONDUCTOR
AT - Atmel , 89 - manufacturer's series , S - silicon CMOS , 52 - is the family of 8051 i.e., 8052 MC .
semi conductor
can we replace AT89c51 by AT89s52 but i have c51 code
The Atmel AT89S52 is a microcontroller in the 80C51 family.
yes
32
Its an I\O controller
AT89S52 is a microcontroller based on the Intel 8051 architecture and features. Concerning your question, AT89S52 is the heart of most project involving Dual Tone Multi Frequency (DTMF), that is to say it is the controller IC used in such project.
S stands for Sulphar.H stands for Hydrogen.
R stands for restate the question S Stands for support from text S stands for support from self E stands for extend
It is a micro-controller...that is a microprocessor with memory built into it, for small tasks like operating an elevator or a very complicated washing machine. See: http://www.wvshare.com/datasheet/ATMEL_PDF/AT89S52.PDF for a datasheet.
To limit the amount of current to the ports