name:         8031
function:     MICROCONTROLLER
package:      DIP40,40
manufacturer: INTEL
added-by:     ROBERTO RAMIREZ

      +--()--+
 P1.0 | 1  40| VCC
 P1.1 | 2  39| P0.0
 P1.2 | 3  38| P0.1
 P1.3 | 4  37| P0.2
 P1.4 | 5  36| P0.3
 P1.5 | 6  35| P0.4
 P1.6 | 7  34| P0.5
 P1.7 | 8  33| P0.6
  RST | 9  32| P0.7
 P3.0 |10  31| VPP
 P3.1 |11  30| ALE
 P3.2 |12  29| /PSEN
 P3.3 |13  28| P2.7
 P3.4 |14  27| P2.6
 P3.5 |15  26| P2.5
 P3.6 |16  25| P2.4
 P3.7 |17  24| P2.3
XTAL2 |18  23| P2.2
XTAL1 |19  22| P2.1
  VSS |20  21| P2.0
      +------+

This information was added by a third party and may be incorrect.

This pinout came from the Chipdir:
http://www.chipdir.org/