[51] what is the indication of letter 'S' in AT89S51 & 'C' in AT89C51

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v.s.n.kumar

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Hi,
can anybody tell what is the indication of 'S' in AT89S51 & 'C' in AT89C51.
 

There are several differences between the AT89S51 and the AT89C51, however the main points are as follows:

AT89S51:

Can be programmed using either In-System Programming (ISP), which utilizes the standard SPI interface, or High Voltage Parallel Programming modes.

Fully Static Operation: 0 Hz to 33 MHz


AT89C51:

Depending on the exact model, can be programmed utilizing a parallel programming mode requiring either high voltage or low voltage.

Fully Static Operation: 0 Hz to 24 MHz


Reference the links to the device datasheets for an exact device comparison and other differences.


BigDog
 

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