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HT83072 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

Part # HT83072
Description  Q-Voice
PDF  21 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT83072 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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A.C. Characteristics
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
fSYS
System Clock (RC OSC)
3V
¾
4
¾
8
MHz
fTIMER
Timer Input Frequency
3V
¾
0
¾
8
MHz
tWDTOSC
Watchdog Oscillator
3V
¾
45
90
180
ms
tWDT
Watchdog Time-out Period (RC)
3V
Without WDT prescaler
12
23
45
ms
tRES
External Reset Low Pulse Width
¾¾
1
¾¾
ms
tSST
System Start-up Timer Period
¾
Power-up or wake-up from
HALT
¾
1024
¾
tSYS
Characteristics Curves
R vs. F Characteristics Curve
HT83XXX
Rev. 0.10
6
August 25, 2003
Preliminary
9
8
7
6
5
4
3
R ( k W )
4 . 5 V
3 . 0 V
6 2
7 2
8 2
9 2
1 0 2
H T 8 3 X X X R v s . F C h a r t



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