4513 datasheet(65/210 Pages) RENESAS

전자부품 데이터시트 검색엔진

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4513 데이터시트(PDF) 65 Page - Renesas Technology Corp

부품명	4513

상세설명	4-BIT SINGLE-CHIP MICROCOMPUTER

PDF	210 Pages

Scroll/Zoom	100%

제조업체	RENESAS [Renesas Technology Corp]

홈페이지	http://www.renesas.com

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65 / 210 page

1-52

HARDWARE

4513/4514 Group User’s Manual

VOLTAGE DROP DETECTION CIRCUIT

The built-in voltage drop detection circuit is designed to detect a

drop in voltage and to reset the microcomputer if the supply voltage

drops below a set value.

Fig. 37 Voltage drop detection circuit operation waveform

Fig. 36 Voltage drop detection reset circuit

Voltage drop detection circuit

Internal reset signal

RESET pin

Watchdog timer output

WEF

Note: The output structure of RESET pin is N-channel open-drain.

VDD

VRST (detection voltage)

Voltage drop detection

circuit output

The microcomputer starts

operation after f(XIN) is counted

16892 to 16895 times.

RESET pin

Notes 1: Pull-up RESET pin externally.

2: Refer to the voltage drop detection circuit in the electrical characteristics

for the rating value of VRST (detection voltage).

FUNCTION BLOCK OPERATIONS

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