 
'87C451 PLCC' 
'80C451 PLCC' 
{X Size =}  15      {Y Size =}  42      {Parts per Package =}   1 
L1      1         IN  'E\A\/VP' 
L3     53         IN  'XTAL1' 
R1     17         I/O 'P0.0/AD0' 
R2     16         I/O 'P0.1/AD1' 
R3     15         I/O 'P0.2/AD2' 
R4     14         I/O 'P0.3/AD3' 
R5     13         I/O 'P0.4/AD4' 
R6     12         I/O 'P0.5/AD5' 
R7     11         I/O 'P0.6/AD6' 
R8     10         I/O 'P0.7/AD7' 
R10     2         I/O 'P2.0/A8' 
R11     3         I/O 'P2.1/A9' 
R12     4         I/O 'P2.2/A10' 
R13     5         I/O 'P2.3/A11' 
R14     6         I/O 'P2.4/A12' 
R15     7         I/O 'P2.5/A13' 
R16     8         I/O 'P2.6/A14' 
R17     9         I/O 'P2.7/A15' 
T7     18         PWR 'VCC' 
B7     54         PWR 'GND' 
R19    67         OUT 'P\S\E\N\' 
R20    68         OUT 'ALE' 
R22    36         I/O 'P3.0/RXD' 
R23    37         I/O 'P3.1/TXD' 
R24    38         I/O 'P3.2/I\N\T\0\' 
R25    39         I/O 'P3.3/I\N\T\1\' 
R26    40         I/O 'P3.4/T0' 
R27    41         I/O 'P3.5/T1' 
R28    42         I/O 'P3.6/W\R\' 
R29    43         I/O 'P3.7/R\D\' 
R31    26         I/O 'P4.0' 
R32    25         I/O 'P4.1' 
R33    24         I/O 'P4.2' 
R34    23         I/O 'P4.3' 
R35    22         I/O 'P4.4' 
R36    21         I/O 'P4.5' 
R37    20         I/O 'P4.6' 
R38    19         I/O 'P4.7' 
L4     52         IN  'XTAL2' 
L7     35         IN  'RESET' 
L10    44         I/O 'P5.0' 
L11    45         I/O 'P5.1' 
L12    46         I/O 'P5.2' 
L13    47         I/O 'P5.3' 
L14    48         I/O 'P5.4' 
L15    49         I/O 'P5.5' 
L16    50         I/O 'P5.6' 
L17    51         I/O 'P5.7' 
L22    27         I/O 'P1.0' 
L23    28         I/O 'P1.1' 
L24    29         I/O 'P1.2' 
L25    30         I/O 'P1.3' 
L26    31         I/O 'P1.4' 
L27    32         I/O 'P1.5' 
L28    33         I/O 'P1.6' 
L29    34         I/O 'P1.7' 
L31    59         I/O 'P6.0' 
L32    60         I/O 'P6.1' 
L33    61         I/O 'P6.2' 
L34    62         I/O 'P6.3' 
L35    63         I/O 'P6.4' 
L36    64         I/O 'P6.5' 
L37    65         I/O 'P6.6' 
L38    66         I/O 'P6.7' 
R40    58         I/O 'AFLAG' 
R41    57         I/O 'BFLAG' 
L40    55         IN  'O\D\S\' 
L41    56         IN  'I\D\S\' 
 
                                              