HT48C50-1 データシートの表示（PDF） - Holtek Semiconductor
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HT48C50-1 Datasheet PDF : 41 Pages
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HT48R50A-1/HT48C50-1
Symbol
Parameter
IOH
I/O Port Source Current
RPH
Pull-high Resistance
Test Conditions
VDD
Conditions
3V VOH=0.9VDD
5V VOH=0.9VDD
3V
¾
5V
¾
Min.
Typ.
Max.
Unit
-2
-4
¾
mA
-5
-10
¾
mA
20
60
100
kW
10
30
50
kW
A.C. Characteristics
Symbol
Parameter
fSYS1 System Clock (Crystal OSC)
Test Conditions
VDD
Conditions
¾ 2.2V~5.5V
¾ 3.3V~5.5V
fSYS2 System Clock (RC OSC)
¾ 2.2V~5.5V
¾ 3.3V~5.5V
3.2MHz
fSYS3
System Clock
(Internal RC OSC)
1.6MHz
5V
800kHz
400kHz
fTIMER Timer I/P Frequency (TMR)
¾ 2.2V~5.5V
¾ 3.3V~5.5V
3V
¾
tWDTOSC Watchdog Oscillator Period
5V
¾
tWDT1
Watchdog Time-out Period
(WDT OSC)
3V Without WDT
5V prescaler
tWDT2
Watchdog Time-out Period
(System Clock)
¾
Without WDT
prescaler
tWDT3
Watchdog Time-out Period
(RTC OSC)
¾
Without WDT
prescaler
tRES
External Reset Low Pulse
Width
¾
¾
tSST
System Start-up Timer Period ¾ Wake-up from HALT
tINT
Interrupt Pulse Width
¾
¾
Note: *tSYS= 1/fSYS1, 1/fSYS2 or 1/fSYS3
Min.
400
400
400
400
1800
900
450
225
0
0
45
32
11
8
¾
¾
1
¾
1
Typ.
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
90
65
23
17
1024
7.812
¾
1024
¾
Ta=25°C
Max.
4000
8000
4000
8000
5400
2700
1350
675
4000
8000
180
130
46
33
¾
Unit
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
ms
ms
ms
ms
*tSYS
¾
ms
¾
ms
¾
tSYS
¾
ms
Rev. 2.00
5
March 8, 2006
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