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UPD70F3003A Datasheet(PDF) 11 Page - NEC |
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UPD70F3003A Datasheet(HTML) 11 Page - NEC |
11 / 44 page µPD70F3003A, 70F3025A 11 Data Sheet U13189EJ3V0DS00 2.3 I/O Circuits of Pins and Recommended Connections of Unused Pins Table 2-1 shows the I/O circuit type of each pin, and the recommended connections of the unused pins. Figure 2-1 shows a partially simplified diagram of each circuit. When connecting a pin to VDD or VSS via resistor, use of a resistor of 1 to 10 k Ω is recommended. Table 2-1. I/O Circuit Types of Each Pin and Recommended Connections of Unused Pins (1/2) Pin I/O Circuit Type Recommended Connections P00/TO110, P01/TO111 5 Input : Individually connect to VDD or VSS via resistor. P02/TCLR11, P03/TI11, 8 Output : Leave unconnected. P04/INTP110-P07/INTP113/ADTRG P10-TO120, P11/TO121 5 P12/TCLR12, P13/TI12 8 P14/INTP120 P15/INTP121/SO2 P16/INTP122/SI2 P17/INTP123/SCK2 P20/PWM0, P21/PWM1 5 P22/TXD0/SO0 P23/RXD0/SI0, P24/SCK0 8 P25/TXD1/SO1 5 P26/RXD1/SI1, P27/SCK1 8 P30/TO130, P31/TO131 5 P32/TCLR13, P33/TI13 8 P34/INTP130 P35/INTP131/SO3 10-A P36/INTP132/SI3 P37/INTP133/SCK3 P40/AD0-P47/AD7 5 P50/AD8-P57/AD15 P60/A16-P63/A19 P70/ANI0-P77/ANI7 9 Directly connect to VSS. P90/LBEN 5 Input: Individually connect to VDD or VSS via resistor. P91/UBEN Output: Leave unconnected. P92/R/W P93/DSTB P94/ASTB P95/HLDAK P96/HLDRQ P110/TO140, P111/TO141 P112/TCLR14, P113/TI14 8 P114/INTP140-P117/INTP143 |
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