HT82K68 データシートの表示（PDF） - Holtek Semiconductor
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HT82K68 Datasheet PDF : 39 Pages
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HT82K68E-L/HT82K68A-L
Symbol
Parameter
Test Conditions
VDD
Conditions
Min. Typ. Max. Unit
VIL2
Input Low Voltage (RESET)
3V
¾
5V
¾
0
¾
0.7
V
0
¾
1.3
V
3V
¾
0.9VDD ¾
VDD
V
VIH2
Input High Voltage (RESET)
5V
¾
0.9VDD ¾
VDD
V
VLVR
Low Voltage Reset
¾
¾
¾
2.0
¾
V
IOL
I/O Port Sink Current of PA, PB, PC,
PD, PE0~1
5V VOL= 0.1VDD
2
4
¾
mA
IOH
I/O Port Source Current of PA, PB,
PC, PD, PE0~4
5V VOH= 0.9VDD
-2.5 -4
¾
mA
ILED
LED Sink Current (SCR, NUM, CAP) 5V VOL=3.4V
10
17
25 mA
tPOR
Power-on Reset Time
5V R=100kW, C=0.1mF
50 100 150 ms
RPH
Internal Pull-high Resistance of PA, 3V
PB, PC, PD, PE Port
5V
¾
¾
30
60
90
kW
15
30
45
kW
RPH1
Internal Pull-high Resistance of DATA, 3V
CLK
5V
¾
¾
4
9
15
kW
2
4.7
8
kW
Df/f
Frequency Variation
5V Crystal
¾
¾
±1
%
Df/f1
Frequency Variation
5V RC
¾
¾
±20
%
A.C. Characteristics
Symbol
Parameter
fSYS1
System Clock (Crystal OSC)
fSYS2
System Clock (RC OSC)
tWDTOSC Watchdog Oscillator Period
tWDT1 Watchdog Time-out Period (RC)
tWDT2
tRES
Watchdog Time-out Period
(System Clock)
External Reset Low Pulse Width
tSST
System Start-up Timer Period
tINT
Interrupt Pulse Width
Note: tSYS= 1/fSYS1 or 1/fSYS2
Test Conditions
VDD
Conditions
1.8V
¾
5V
¾
3V
¾
5V
¾
3V
¾
5V
¾
3V Without WDT
5V prescaler
¾
Without WDT
prescaler
¾
¾
¾
Power-up or
wake-up from HALT
¾
¾
Ta=25°C
Min. Typ. Max. Unit
450 ¾ 4000 kHz
450 ¾ 8000 kHz
450 ¾ 6000 kHz
450 ¾ 8000 kHz
45
90 180 ms
35
78 130 ms
12
23
45
ms
9
19
35
ms
¾ 1024 ¾
tSYS
1
¾
¾
ms
¾ 1024 ¾
tSYS
1
¾
¾
ms
Rev. 1.40
5
February 1, 2011
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