UPD70F3003A datasheet(11/44 Pages) NEC

Part #	UPD70F3003A

Description	V853TM 32-/16-BIT SINGLE-CHIP MICROCONTROLLER

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Manufacturer	NEC [NEC]

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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)

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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