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uC 89C51 input logic query

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reubenn

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I read the datasheet of Atmel uC AT89C51.(found here :
http://www.atmel.com/dyn/resources/prod_documents/doc0265.pdf )
According to the datasheet ( pg 10),
Min Max
VIL Input Low-voltage (Except EA) -0.5 0.2VCC - 0.1

VIL1 Input Low-voltage (EA) -0.5 0.2VCC - 0.3

VIH Input High-voltage (Except XTAL1, RST) 0.2VCC + 0.9 VCC + 0.5

VIH1 Input High-voltage (XTAL1, RST) 0.7VCC VCC + 0.5



Taking VCC as +5V


Min Max
VIL -0.5 0.9

VIL1 -0.5 0.7

VIH1 1.9 5.5

VIH1 3.5 5.5

Are these values correct ?
 

Yes, your values are correct

Nandhu
 

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