| DIN Conn. | Device Bus |
| Interface Bus |
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| PIN |
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| PIN NO. | CPU Pin Nr. | Function | CPU PIN Nr. | SIGNAL |
| 2nd Function |
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| C10 |
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| 15 | \HAK |
| P35 |
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| A11 | 47 | TIN0 | 16 | RDY |
| P36 |
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| B11 | 48 | TOT0 | 17 | CLK |
| P37 |
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| C11 |
| GND |
| GND |
| GND |
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| A12 | 67 | TIN1 | 18 | SOT0 |
| P40 |
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| B12 | 68 | TOT1 | 19 | SCK0 |
| P41 |
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| C12 |
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| 20 | SIN0 |
| P42 |
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| A13 |
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| 24 | SOT1 |
| P45 |
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| B13 | 53 | IN0 | 22 | SCK1 |
| P44 |
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| C13 | 54 | IN1 | 21 | SIN1 |
| P43 |
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| A14 | 55 | IN2 | 25 | SOT2 |
| P46 |
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| B14 | 56 | IN3 | 26 | SCK2 |
| P47 |
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| C14 | 57 | IN4 | 28 | SIN2 |
| P50 |
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| A15 | 58 | IN5 |
| SDA |
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| B15 | 59 | OUT2/IN6 |
| SCL |
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| C15 | 60 | OUT3/IN7 | 61 | PPG0 |
| P80 |
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| A16 | 65 | OUT0 | 62 | PPG1 |
| P81 |
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| B16 | 66 | OUT1 | 67 | TIN1 |
| P86 |
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| C16 |
| VCC |
| VCC |
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| A17 | 59 | OUT3/IN7 | 33 | ADTG |
| P55 |
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| C17 | 60 | OUT2/IN6 | 68 | TOT1 |
| P87 |
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| C17 |
| AVCC | 34 | AVCC |
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| A18 |
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| 35 | AVR+ |
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| B18 |
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| 36 | AVR- |
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| C18 |
| AGND | 37 | AGND |
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| A19 |
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| 38 | AN0 |
| P60 |
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| B19 |
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| 39 | AN1 |
| P61 |
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| C19 |
| GND |
| GND |
| GND |
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| C20 |
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| 40 | AN2 |
| P62 |
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| A21 |
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| 41 | AN3 |
| P63 |
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| C20 |
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| 43 | AN4 |
| P64 |
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| A21 |
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| 44 | AN5 |
| P65 |
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| B21 |
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| 45 | AN6 |
| P66 |
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| C21 |
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| 46 | AN7 |
| P67 |
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| A22 | 61 | PPG0 | 77 | \RST |
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| B22 | 62 | PPG1 | 52 | \HST |
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| C22 | 63 | PPG2 | 69 | INT0 |
| P90 |
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| A23 | 64 | PPG3 | 70 | INT1 |
| P91 |
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| B23 |
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| 71 | INT2 |
| P92 |
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| C23 |
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| 72 | INT3 |
| P93 |
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| A24 | 73 | TX0 | 29 | INT4 |
| P51 |
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| B24 | 74 | RX0 | 30 | INT5 |
| P52 |
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| C24 | 75 | TX1 | 31 | INT6 |
| P53 |
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| A25 | 76 | RX1 | 32 | INT7 |
| P54 |
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| B25 |
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| 53 | IN0 |
| P70 |
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| C25 |
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| 54 | IN1 |
| P71 |
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| A26 |
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| 55 | IN2 |
| P72 |
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| B26 |
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| 56 | IN3 |
| P73 |
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| C26 |
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| 59 | OUT2/IN6 |
| P76 |
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| A27 |
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| 60 | OUT3/IN7 |
| P77 |
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| B27 |
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| NC(SGO) |
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| C27 |
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| NC(SGA) |
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