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HT47C20 Fiches technique(PDF) 8 Page - Holtek Semiconductor Inc

No de pièce HT47C20
Description  8-Bit Microcontroller
PDF  56 Pages
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Fabricant  HOLTEK [Holtek Semiconductor Inc]
Site Internet  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT47C20 Fiches technique(HTML) 8 Page - Holtek Semiconductor Inc

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A.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VDD
Conditions
fSYS1
System Clock (Crystal OSC)
3V
¾
455
¾
480
kHz
fSYS2
System Clock (RC OSC)
3V
¾
64
¾
500
kHz
fTIMER
Timer I/P Frequency (TMR)
3V
¾
0
¾
500
kHz
tWDTOSC Watchdog Oscillator
3V
¾
45
90
180
ms
tRES
External Reset Low Pulse Width ¾¾
10
¾¾
ms
tSST
System Start-up Timer Period
¾
Power-up or
wake-up from halt
¾
1024
¾
tSYS
tINT
Interrupt Pulse Width
¾¾
10
¾¾
ms
fAD
A/D Converter Frequency
3V
¾¾
¾
500
kHz
Note: tSYS=1/fSYS
HT47C20
8
January 18, 2000



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