in microcontroller AT89S51 what is "s" , "89" ,"51" stands for ?

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in microcontroller AT89S51 what is "s" , "89" ,"51" stands for ?

2007-04-04 04:25:58 · 3 answers · asked by VIMAL J 1 in Science & Mathematics ➔ Engineering

3 answers

AT-Atmel
89- Most of the time it is when the technology is built
S- standard Vcc voltage schottky.
51- what ever they want it to be.

2007-04-04 04:34:32 · answer #1 · answered by uisignorant 6 · 1⤊ 1⤋

AT = Atmel
s = standard ???, LP = low power, LS = low voltage
89 = flash memory (80 = no memory, 83 = ROM memory, 87 = OTP (one time programmable) memory)
51 = uses MCS51 instruction set

2007-04-05 09:48:09 · answer #2 · answered by justme 7 · 1⤊ 0⤋

The '51' typical referes to the 80C31 processor. 8 bit micro controller, the "51" version inclded a 2K memory but the same instruction set.

2007-04-04 11:36:45 · answer #3 · answered by Anonymous · 0⤊ 1⤋