HD404324 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD404324

4-Bit Microcontroller

Hitachi -> Renesas Electronics 

HD404328 Series

High Sensitivity Mode (VCC = 5.0 V, GND = 0.0 V, Ta = 0°C to 70°C, unless otherwise specified)

Item

Symbol Pin

Zero-crossing

VZC

detection input

voltage

ZCD

Zero-crossing

VAZC

detection accuracy

Zero-crossing

f ZC

detection input

frequency

Min

Typ Max

Unit Test Conditions Note

2.0

— 3.0

VP-P AC connection,

C = 0.1 µF

—

— ±100

mV fZC = 50/60 Hz

Refer to

(sine wave),

figure

48

fOSC = 4 MHz,

VCC = 5.0 V

45

— 1000 Hz

1/f ZC

AC input

VAZC

VAZC

VZC(P-P)

Internal CPU signal

Note: The internal CPU signal is shown lagging behind the original waveform in the figure, but this is not

fixed—it could actually lead.

Figure 48 Zero-Crossing Detection

84

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