HT82K68A_01 HOLTEK [Holtek Semiconductor Inc], HT82K68A_01 Datasheet - Page 4

• Manufacturer Part Number: HT82K68A_01
• Description: 8-Bit Multimedia Keyboard Encoder Mask MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

A.C. Characteristics
Note:
Rev. 1.10
V
V
V
V
I
I
I
t
R
R
R
Df/f
Df/f1
f
f
t
t
t
t
t
t
Symbol
Symbol
OL
OH
LED
POR
SYS1
SYS2
WDTOSC
WDT1
WDT2
RES
SST
INT
IL2
IH2
IL3
IH3
PH
PH1
PH2
t
SYS
Input Low Voltage for I/O Ports (CMOS)
Input High Voltage for I/O Ports (CMOS)
Input Low Voltage (RESET)
Input High Voltage (RESET)
I/O Port Sink Current
I/O Port Source Current
LED Sink Current (SCR, NUM, CAP)
Power-on Reset Time
Internal Pull-high Resistance of PA, PB,
PC, PD, PE Port
Internal Pull-high Resistance of DATA,
CLK
Internal Pull-high Resistance of RESET
Frequency Variation
Frequency Variation
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
Parameter
V
V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
5V V
5V V
5V V
5V
5V
5V
5V
5V Crystal
5V RC
¾
¾
¾
¾
DD
DD
4
Without WDT prescaler
Without WDT prescaler
Power-up or wake-up
from HALT
Test Conditions
Test Conditions
OL
OH
OL
= 0.5V
=3.4V
= 4.5V
Conditions
Conditions
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Min.
-2.5
Min.
120
1.7
2.7
2.4
4.0
10
15
45
35
12
¾
¾
¾
¾
¾
¾
¾
¾
0
0
0
0
7
5
2
9
1
1
1024
1024
Typ.
-4.5
Typ.
150
4.7
12
14
12
31
90
76
23
19
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
6
6
6
6
November 20, 2001
HT82K68A
Max.
Max.
180
±10
180
130
1.2
2.3
0.7
1.3
18
20
46
±1
45
35
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
3
5
3
5
8
Ta=25°C
MHz
MHz
MHz
MHz
Unit
Unit
t
t
mA
mA
mA
ms
ms
ms
kW
kW
kW
SYS
SYS
ms
ms
ms
ms
%
%
V
V
V
V
V
V
V
V