UPD754264 datasheet(10/68 Pages) NEC

Part #	UPD754264

Description	4-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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µPD754264

3.4 Recommended Connection of Unused Pins

Table 3-1. List of Recommended Connection of Unused Pins

Recommended Connecting Method

P30/PTO0

Input state : Independently connect to VSS or VDD via a resistor.

P31/PTO1

Output state: Leave open.

P32/PTO2

P33

P60/AVREF

P61/INT0

P62/AN0

P63/AN1

P70/KR4

Connect to VDD.

P71/KR5

P72/KR6

P73/KR7

P80

Input state : Independently connect to VSS or VDD via a resistor.

Output state: Leave open.

KRREN

When this pin is connected to VDD, internal reset signal is gener-

ated at the falling edge of the KRn pin in the STOP mode.

When this pin is connected to VSS, internal reset signal is not

generated even if the falling edge of KRn pin is detected in the

STOP mode.

IC

Connect directly to VDD.

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