HT47C20 Holtek Semiconductor Inc, HT47C20 Datasheet - Page 8

• Manufacturer Part Number: HT47C20
• Description: 8-Bit Microcontroller
• Manufacturer: Holtek Semiconductor Inc

A.C. Characteristics
Note: t
f
f
f
t
t
t
t
f
Symbol
SYS1
SYS2
TIMER
AD
WDTOSC
RES
SST
INT
SYS
=1/f
System Clock (Crystal OSC)
System Clock (RC OSC)
Watchdog Oscillator
External Reset Low Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
A/D Converter Frequency
Timer I/P Frequency (TMR)
SYS
Parameter
V
3V
3V
3V
3V
3V
¾
¾
¾
DD
Test Conditions
8
Power-up or
wake-up from halt
Conditions
¾
¾
¾
¾
¾
¾
¾
Min. Typ. Max. Unit
455
64
45
10
10
¾
¾
0
1024
90
¾
¾
¾
¾
¾
¾
January 18, 2000
480
500
500
180
500
HT47C20
¾
¾
¾
Ta=25°C
kHz
kHz
kHz
t
kHz
SYS
ms
ms
ms