UPD17072 datasheet(21/228 Pages) RENESAS

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UPD17072 데이터시트(PDF) 21 Page - Renesas Technology Corp

부품명	UPD17072

상세설명	MOS INTEGRATED CIRCUIT

PDF	228 Pages

Scroll/Zoom	100%

제조업체	RENESAS [Renesas Technology Corp]

홈페이지	http://www.renesas.com

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21 / 228 page

µPD17072,17073

1.4 Notes on Using CE Pin

The CE pin has a function to set a test mode in which the internal operations of the

µPD17073 are tested (dedicated

to IC test), in addition to the functions listed in 1.1 Pin Function List.

When a voltage higher than VDD is applied to the CE pin, the test mode is set. This means that if noise exceeding

VDD is applied to the CE pin even during normal operation, the test mode is set, affecting the normal operation.

If the wiring of the CE pin is too long, the above problem occurs because wiring noise is superimposed on the CE

pin.

Therefore, wire the CE pin with as short a wiring length as possible to suppress noise. If noise cannot be avoided,

use external components as shown below to suppress noise.

• Connect a diode with low VF between CE and VDD

• Connect a capacitor between CE and VDD

VDD

Diode with

low VF

VDD

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