HT82K68A-20 データシートの表示（PDF） - Holtek Semiconductor
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HT82K68A-20 Datasheet PDF : 39 Pages
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HT82K68A
Symbol
Parameter
VLVR
Low Voltage Reset
Test Conditions
VDD
Conditions
¾
¾
3V
VIL2
Input Low Voltage for I/O Ports (CMOS)
¾
5V
3V
VIH2
Input High Voltage for I/O Ports (CMOS)
¾
5V
VIL3
Input Low Voltage (RESET)
3V
¾
5V
VIH3
Input High Voltage (RESET)
3V
¾
5V
IOL
I/O Port Sink Current
(PA, PB, PC, PD, PE0~PE1)
5V VOL= 0.5V
IOH1
I/O Port Source Current
(PA, PB, PC2~PC7, PD, PE0~PE1)
5V VOH= 4.5V
IOH2
I/O Port Source Current (PE2~PE4)
ILED
LED Sink Current (SCR, NUM, CAP)
tPOR
Power-on Reset Time
RPH
Internal Pull-high Resistance
(PA, PB, PC, PD, PE)
5V VOH= 4.5V
5V VOL=3.4V
5V R=100kW, C=0.1mF
3V
¾
5V
3V
RPH1 Internal Pull-high Resistance (DATA, CLK)
¾
5V
3V
RPH2 Internal Pull-high Resistance (RESET)
¾
5V
Df/f
Frequency Variation
Crystal
5V
RC
Min. Typ. Max. Unit
¾ 2.4 ¾ V
0 ¾ 1.2
V
0 ¾ 2.3
1.7 ¾ 3
V
2.7 ¾ 5
0 ¾ 0.7
V
0 ¾ 1.3
2.4 ¾ 3
V
4.0 ¾ 5
16 25 ¾ mA
-8 -16 ¾ mA
-2.5 -4 ¾ mA
10 18 24 mA
30 60 90 ms
30 60 90
kW
15 30 45
4
9 15
kW
2 4.7 8
30 60 90
kW
15 31 46
¾ ¾ ±1 %
¾ ¾ ±20 %
A.C. Characteristics
Symbol
Parameter
fSYS1
System Clock (Crystal OSC)
fSYS2
System Clock (RC OSC)
tWDTOSC Watchdog Oscillator
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/fSYS
Ta=25°C
Test Conditions
VDD
Conditions
3V
¾
5V
3V
OSC resistor 40kW
5V
3V
¾
5V
3V
Without WDT prescaler
5V
Min.
¾
¾
4.8
4.8
45
35
12
9
Typ.
6
6
6
6
90
76
23
19
Max.
¾
¾
7.2
7.2
180
130
45
35
Unit
MHz
MHz
ms
ms
¾ Without WDT prescaler ¾ 1024 ¾ tSYS
¾
¾
1 ¾ ¾ ms
¾
Power-up or wake-up
from HALT
¾
1024
¾
tSYS
¾
¾
1 ¾ ¾ ms
Rev. 1.70
5
December 26, 2005
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