UPD75064A データシートの表示（PDF） - NEC => Renesas Technology

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UPD75064A

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)

Type Y-D

Data

Output

disable

P.U.R.

enable

Type D

Type B

VDD

P.U.R.

P-ch

Type Z

AVREF

IN/OUT

(3/3)

Reference voltage

Type Y

P.U.R.: Pull-Up Resistor

AVSS

3.4 Mask Option Selection

The following mask options are available for selection for each pin.

Pin name

P40 - P43,

P50 - P53

XT1, XT2

Mask option

1 Pull-up resistor enabled

(specifiable bit by bit)

2 Pull-up resistor disabled

(specifiable bit by bit)

1 Feedback resistor enabled

(if a subsystem clock is used)

2 Feedback resistor disabled

(if a subsystem clock is not used)

12

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