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8050 (MCS-48) microcontroller - DIP 40 package
Manufacturers: Intel, National Semiconductor, NEC
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T0 |
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1 |
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40 |
 |
VCC |
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XTAL1 |
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2 |
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39 |
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T1 |
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XTAL2 |
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3 |
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38 |
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P27 |
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Reset |
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4 |
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37 |
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P26 |
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SS |
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5 |
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36 |
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P25 |
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INT |
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6 |
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35 |
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P24 |
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EA |
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7 |
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34 |
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P17 |
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RD |
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8 |
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33 |
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P16 |
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PSEN |
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9 |
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32 |
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P15 |
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WR |
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10 |
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31 |
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P14 |
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ALE |
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11 |
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30 |
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P13 |
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DB0 |
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12 |
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29 |
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P12 |
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DB1 |
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13 |
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28 |
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P11 |
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DB2 |
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14 |
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27 |
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P10 |
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DB3 |
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15 |
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26 |
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VDD |
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DB4 |
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16 |
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25 |
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PROG |
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DB5 |
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17 |
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24 |
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P23 |
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DB6 |
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18 |
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23 |
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P22 |
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DB7 |
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19 |
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22 |
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P21 |
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VSS |
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20 |
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21 |
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P20 |
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 |
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 |
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* NEC datasheet shows PROG as an inverted output
80C50 microcontroller - DIP 40 package
Manufacturers: NEC
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T0 |
|
1 |
|
40 |
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VDD |
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XTAL1 |
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2 |
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39 |
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T1 |
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XTAL2 |
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3 |
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38 |
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P27 |
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Reset |
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4 |
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37 |
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P26 |
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SS |
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5 |
|
36 |
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P25 |
|
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INT |
|
6 |
|
35 |
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P24 |
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EA |
|
7 |
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34 |
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P17 |
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RD |
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8 |
|
33 |
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P16 |
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PSEN |
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9 |
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32 |
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P15 |
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WR |
|
10 |
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31 |
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P14 |
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ALE |
|
11 |
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30 |
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P13 |
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DB0 |
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12 |
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29 |
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P12 |
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DB1 |
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13 |
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28 |
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P11 |
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DB2 |
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14 |
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27 |
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P10 |
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DB3 |
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15 |
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26 |
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STOP |
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DB4 |
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16 |
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25 |
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PROG |
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DB5 |
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17 |
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24 |
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P23 |
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DB6 |
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18 |
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23 |
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P22 |
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DB7 |
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19 |
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22 |
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P21 |
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VSS |
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20 |
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21 |
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P20 |
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