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參數(shù)資料
| 型號： | HT48RA3 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit Remote Type OTP MCU |
| 中文描述： | 8位單片機的遠(yuǎn)程型檢察官辦公室 |
| 文件頁數(shù)： | 3/36頁 |
| 文件大小： | 245K |
| 代理商： | HT48RA3 |
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Absolute Maximum Ratings
Supply Voltage...........................V
SS
0.3V to V
SS
+5.5V
Storage Temperature............................ 50 C to 125 C
Input Voltage..............................V
SS
0.3V to V
DD
+0.3V
Operating Temperature........................... 40 C to 85 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
D.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD
Operating Voltage
2.2
3.6
V
I
DD
Operating Current
3V
No load, f
SYS
=4MHz
3
5
mA
I
STB1
Standby Current (WDT Enabled)
3V
No load, system HALT
5
10
A
I
STB2
Standby Current (WDT Disabled)
3V
No load, system HALT
0.1
1
A
V
IL1
Input Low Voltage for I/O Ports
0
0.3V
DD
V
V
IH1
Input High Voltage for I/O Ports
0.7V
DD
V
DD
V
V
IL2
Input Low Voltage (RES Ports)
0
0.4V
DD
V
V
IH2
Input High Voltage (RES Ports)
0.9V
DD
V
DD
V
I
OL
I/O Port Sink Current
3V
V
OL
=0.1V
DD
5
10
mA
I
OH1
I/O Port Source Current
3V
V
OH
=0.9V
DD
2
5
mA
I
OH2
I/O Port Source Current
3V
V
OH
=0.8V
DD
4
8
mA
R
PH
Pull-high Resistance
3V
40
60
80
k
A.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
f
SYS
System Clock
3V
400
4000
kHz
f
TIMER
Timer I/P Frequency
(TMR0/TMR1)
3V
50% duty
0
4000
kHz
t
WDTOSC
Watchdog Oscillator
3V
45
90
180
s
t
WDT1
Watchdog Time-out Period
(WDT OSC)
3V
WithoutWDTprescaler
11.5
23
46
ms
t
WDT2
WatchdogTime-outPeriod(f
SYS
/4) 3V
WithoutWDTprescaler
1024
t
SYS
t
RES
External Reset Low Pulse Width
1
s
t
SST
System Start-up Timer Period
Power-up, reset or
wake-up from HALT
1024
t
SYS
t
INT
Interrupt Pulse Width
1
s
t
ACC
Data ROM Access Time
1
s
Note: t
SYS
=1/(f
SYS
)
HT48RA3
Rev. 1.20
3
May 12, 2003
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