HT82M21A 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT82M21A Datasheet PDF : 6 Pages
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HT82M21A
D.C. Characteristics
Symbol
Parameter
VDD
Operating Voltage
Test Conditions
VDD
Conditions
¾
¾
IDD
Operating Current (Crystal OSC)
5V
No load, USB mode
fSYS=6MHz PS/2 mode
ISTB
Standby Current
5V No load, system HALT
VIL1
Input Low Voltage for I/O Ports
5V
¾
VIH1
Input High Voltage for MCU I/O Ports 5V
¾
VIL2
Input Low Voltage (RESET)
5V
¾
VIH2
Input High Voltage (RESET)
5V
¾
VIH3
Input High Voltage for USB I/O Ports 3.3V
¾
VPOR
Power on Reset VDD Detection
Voltage
5V
¾
IOL1
Output Port Sink Current
5V VOL=0.5V
IOH1
Output Port Source Current
5V VOL=4.5V
IOL2
Output Port Sink Current (LED)
5V VOL=4.5V
Min.
4.4
¾
¾
¾
0
3.5
0
3.5
2.8
3.5
¾
¾
¾
Typ.
¾
10
3
¾
¾
¾
¾
¾
¾
¾
4
-4
50
Ta=25°C
Max. Unit
5.25 V
¾ mA
¾ mA
250 mA
1.0
V
5
V
1.5
V
5
V
3.6
V
3.9
V
¾ mA
¾ mA
¾ mA
A.C. Characteristics
Symbol
Parameter
fSYS
System Clock (Crystal OSC)
tOST
Oscillation Start-up Timer Period
Note: tSYS=1/fSYS
Test Conditions
VDD
Conditions
5V
¾
¾
Power-up or wake-up
form HALT
Timing Diagram
Z-axis Photo-Coupler Crossed Width
X 1 (Y 1 ) (Z 1 )
X 2 (Y 2 ) (Z 2 )
tr
tp
tf
N o te : F o r X , Y - a x is tr, tp , tf > 3 0 m s
F o r Z - a x is tr, tp , tf > 2 .5 m s
Ta=25°C
Min. Typ. Max. Unit
0 6000 ¾ kHz
¾ 1024 ¾ tSYS
Z-axis Counting
Z1
Z2
+1
+1
-1
-1
Rev. 1.40
3
September 15, 2005
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