![](/images/new-backgrounds/1125774/125774275x1.webp)
4. Pin arrangement (FP-64A: Top view)
P50/TXD
P51/RXD
P52/SCK
RES
NMI
VCC
STBY
VSS
XTAL
EXTAL MD1 MD0
AVSS P70/AN0 P71/AN1 P72/AN2
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P10/A0
P11/A1
P12/A2
P13/A3
P14/A4
P15/A5
P16/A6
P17/A7
VSS P20/A8 P21/A9 P22/A10 P23/A11 P24/A12 P25/A13
P26/A14
5. ADU PWB Port List
Pin | Used | Sig. Name | I/O | Active | Note | |
No. | Port | |||||
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1 | TXD | O |
| Copier UART signal | ||
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2 | RXD | I |
| Copier UART signal | ||
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3 | DSR | O |
| Copier UART signal | ||
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4 | /RES |
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| External reset pin | |
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5 | /NMI |
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6 | VCC |
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| Power (VD) | |
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7 | /STBY |
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| Standby pin | |
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8 | VSS |
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| Power (GND) | |
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9 | XTAL |
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| Clock pin (8MHa) | |
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10 | EXTAL |
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| Clock pin (8MHz) | |
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11 | MD1 |
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| CPU mode select pin | |
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12 | MD2 |
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| CPU mode select pin | |
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13 | AVSS |
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| A/D power (VD) | |
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14 | DPHPS1 | I | H | Alignment plate home | ||
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| position sensor signal | |
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15 | DPHPS2 | I | H | Alignment plate home | ||
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| position sensor signal | |
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16 | DPED1 | I | H | Paper sensor 1 | ||
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17 | DPPD1 | I | H | Paper entry sensor | ||
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18 | DPED2 | I | H | Paper sensor 2 | ||
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19 | DPOD | I | H | Paper exit sensor | ||
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Pin | Used | Sig. Name | I/O | Active | Note | |
No. | Port | |||||
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20 | DTR | I |
| Copier UART signal | ||
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21 | — |
| NC | |||
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22 | AVCC |
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| A/D power (GND) | |
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23 |
| O | L | Stepping motor output signal | ||
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24 | — |
| NC | |||
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25 | DPTD | I |
| DDM rotary encoder signal | ||
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26 | — |
| NC | |||
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27 | DDM_PWM | O | H | DDM drive pulse signal | ||
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28 | DDM_DIR | O | H/L | DDM direction select signal | ||
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29 | — |
| NC | |||
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30 | SIM | I |
| Not Used | ||
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31 | VCC |
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| Power (VD) | |
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32 | A15 |
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| Address signal | |
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33 | A14 |
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| Address signal | |
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34 | A13 |
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| Address signal | |
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35 | A12 |
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| Address signal | |
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36 | A11 |
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| Address signal | |
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37 | A10 |
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| Address signal | |
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38 | A9 |
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| Address signal | |
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39 | A8 |
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| Address signal | |
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40 | VSS |
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| Power (VD) | |
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41 | A7 |
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| Address signal | |
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12 – 19