Appendix d
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LE-363 User’s Manual System Resources

I/O Port Address Map

Appendix D

The GPIO can be programmed with the MSDOS debug program using simple

IN/OUT commands. The following lines show an example how to do this.

GPIO0...GPIO7 bit0……bit7

-o 4E 87 ;enter configuration

-o 4E 87

-o 4E 2A

-o 4F FD ;enable GPIO function

-o 4E 07

-o 4F 07 ;enable GPIO configuration

-o 4E F0

-o 4F xx ;set GPIO as input/output; set ‘1’ for input,’0’for output

-o 4E F1

-o 4F xx ;if set GPIO’s as output, in this register its value can be set

Optional :

-o 4E F2

-o 4F xx ; Data inversion register ; ‘1’ inverts the current value of the

bits ,’0’ leaves them as they are

-o 4E 30

-o 4F 01 ; active GPIO’s

For further information ,please refer to Winbond W83627HF datasheet.

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