UPD75P048GC-AB8 查看數據表（PDF） - NEC => Renesas Technology

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UPD75P048GC-AB8

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75P048

1.3 PIN INPUT/OUTPUT CIRCUITS

The input/output circuit of each µPD75P048 pin is shown below in a simplified manner.

Type A (For Type E-B)

VDD

Type D (For Type E-B, F-A)

VDD

(1/3)

P-ch

IN

Data

P-ch

OUT

N-ch

Output

disable

N-ch

Type B

CMOS input buffer

IN

Schmitt trigger input with hysteresis

Push-pull output which can be set to high-impedance output

(off for both P-ch and N-ch)

Type E-B

Data

Output

disable

P.U.R.

enable

Type D

VDD

P.U.R.

P-ch

IN/OUT

Type A

P.U.R.: Pull-Up Resistor

Type B-C

VDD

P.U.R.

P-ch

P.U.R.

enable

IN

P.U.R.: Pull-Up Resistor

Type E-D

Data

Output

disable

Type D

Type A

IN/OUT

P.D.R.

enable

N-ch

P.D.R.

P.D.R.: Pull-Down Resistor

10

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