參數(shù)資料
型號(hào): HD404326
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微電腦(4位單片微計(jì)算機(jī))
文件頁數(shù): 84/94頁
文件大?。?/td> 573K
代理商: HD404326
HD404328 Series
84
High Sensitivity Mode (V
CC
= 5.0 V, GND = 0.0 V, T
a
= 0
°
C to 70
°
C, unless otherwise specified)
Item
Symbol
Pin
Min
Typ Max
Unit Test Conditions
Note
Zero-crossing
detection input
voltage
V
ZC
ZCD
2.0
3.0
V
P-P
AC connection,
C = 0.1
μ
F
Zero-crossing
detection accuracy
V
AZC
±
100
mV f
ZC
= 50/60 Hz
(sine wave),
f
OSC
= 4 MHz,
V
CC
= 5.0 V
Hz
Refer to
figure
48
Zero-crossing
detection input
frequency
f
ZC
45
1000
AC input
Internal CPU signal
The internal CPU signal is shown lagging behind the original waveform in the figure, but this is not
fixed—it could actually lead.
1/f
ZC
V
AZC
V
AZC
V
ZC(P-P)
Note:
Figure 48 Zero-Crossing Detection
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