HT82K68 Holtek Semiconductor Inc, HT82K68 Datasheet - Page 6

• Manufacturer Part Number: HT82K68
• Description: Multimedia Keyboard Encoder OTP
• Manufacturer: Holtek Semiconductor Inc

A.C. Characteristics
Note: t
f
f
t
t
t
t
t
t
Symbol
SYS1
SYS2
WDTOSC
WDT1
WDT2
RES
SST
INT
SYS
System Clock
(Crystal OSC)
System Clock (RC OSC)
Watchdog Oscillator
Watchdog Time-out
Period (RC)
Watchdog Time-out
Period (System Clock)
External Reset Low
Pulse Width
System Start-up Timer
Period
Interrupt Pulse Width
= 1/f
SYS
Parameter
Preliminary
V
3V
5V
3V
5V
3V
5V
3V
5V
¾
¾
¾
¾
DD
Test Conditions
Without WDT
prescaler
Without WDT
prescaler
Power-up or
wake-up from HALT
6
Conditions
¾
¾
¾
¾
¾
¾
¾
¾
Min. Typ.
¾
¾
¾
¾
45
35
12
¾
¾
9
1
1
1024
1024
90
65
23
17
¾
¾
2
2
2
2
HT82K68E
Max. Unit
August 8, 2000
180
130
20
20
45
35
¾
¾
¾
¾
¾
¾
Ta=25°C
MHz
MHz
MHz
MHz
t
t
ms
ms
SYS
SYS
ms
ms
ms
ms