8051, 8052, 8054, 8058, 8751, 8752, 8754, 8758, 8031, 8032 (DIP)
Intel 8051-series microcontroller.

           +--------------+
   T2 P1.0 |1    +--+   40| VCC
 T2EX P1.1 |2           39| P0.0 AD0
  ECI P1.2 |3           38| P0.1 AD1
 CEX0 P1.3 |4           37| P0.2 AD2
 CEX1 P1.4 |5           36| P0.3 AD3
 CEX2 P1.5 |6           35| P0.4 AD4
 CEX3 P1.6 |7           34| P0.5 AD5
 CEX4 P1.7 |8           33| P0.6 AD6
       RST |9           32| P0.7 AD7
  RxD P3.0 |10   8051   31| /EA VPP
  TxD P3.1 |11  series  30| ALE /PROG
/INT0 P3.2 |12          29| /PSEN
/INT1 P3.3 |13          28| P2.7 A15
   T0 P3.4 |14          27| P2.6 A14
   T1 P3.5 |15          26| P2.5 A13
  /WR P3.6 |16          25| P2.4 A12
  /RD P3.7 |17          24| P2.3 A11
        X0 |18          23| P2.2 A10
        X1 |19          22| P2.1 A9
       GND |20          21| P2.0 A8
           +--------------+

[This information is part of the GIICM]

8051, 8052, 8054, 8058, 8751, 8752, 8754, 8758, 8031, 8032 (PLCC)
Intel 8051-series microcontroller.
The 8x54 and 8x58 have an extra GND pin.

PLCC44
+---------------------------------------------------------------+
|  7 P1.5 CEX2  | 18 P3.6 /WR   | 29 P2.5 A13   | 40 P0.3 AD3   |
|  8 P1.6 CEX3  | 19 P3.7 /RD   | 30 P2.6 A14   | 41 P0.2 AD2   |
|  9 P1.7 CEX4  | 20 X0         | 31 P2.7 A15   | 42 P0.1 AD1   |
| 10 RST        | 21 X1         | 32 /PSEN      | 43 P0.0 AD0   |
| 11 P3.0 RxD   | 22 GND        | 33 ALE /PROG  | 44 VCC        |
| 12            | 23            | 34            |  1 (GND)      |
| 13 P3.1 TxD   | 24 P2.0 A8    | 35 /EA VPP    |  2 P1.0 T2    |
| 14 P3.2 /INT0 | 25 P2.1 A9    | 36 P0.7 AD7   |  3 P1.1 T2EX  |
| 15 P3.3 /INT1 | 26 P2.2 A10   | 37 P0.6 AD6   |  4 P1.2 ECI   |
| 16 P3.4 T0    | 27 P2.3 A11   | 38 P0.5 AD5   |  5 P1.3 CEX0  |
| 17 P3.5 T1    | 28 P2.4 A12   | 39 P0.4 AD4   |  6 P1.4 CEX1  |
+---------------------------------------------------------------+

[This information is part of the GIICM]