參數(shù)資料
型號: HT48RB8
廠商: Holtek Semiconductor Inc.
英文描述: 8-Bit USB Type OTP MCU
中文描述: 8位微控制器的USB型檢察官辦公室
文件頁數(shù): 5/45頁
文件大小: 281K
代理商: HT48RB8
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
I
OH1
I/O Port Source Current for PC0
5V
V
OH
=3.4V
8
16
mA
I
OH2
I/O Port Source Current for PA, PB,
PC1~PC7, PD
5V
V
OH
=3.4V
2
5
mA
R
PH
Pull-high Resistance for PA, PB, PC, PD
5V
25
50
80
k
R
PL
Pull-low Resistance for PA1~PA5
5V
15
30
45
k
V
LVR
Low Voltage Reset
3
3.4
4.0
V
V
V33O
3.3V Regulator Output
5V
I
V33O
= 5mA
3.0
3.3
3.6
V
E
A/D
A/D Conversion Error
5V
Total error
1
2
LSB
A.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
f
SYS
System Clock (Crystal OSC)
5V
6
12
MHz
f
TIMER
Timer I/P Frequency (TMR0/TMR1)
5V
0
12
MHz
t
WDTOSC
Watchdog Oscillator Period
5V
15
31
70
s
t
WDT1
Watchdog Time-out Period (WDT OSC)
5V
Without WDT prescaler
4
8
16
ms
t
WDT2
WatchdogTime-outPeriod(SystemClock)
Without WDT prescaler
1024
t
SYS
t
RES
External Reset Low Pulse Width
1
s
t
SST
System Start-up Timer Period
Wake-up from HALT
1024
t
SYS
Power-up, Watchdog
Time-out from normal
1024
t
WDTOSC
t
INT
Interrupt Pulse Width
1
s
t
ADC
A/D Conversion Time
64
t
A/D
Note: t
A/D
=
1
f
A/D
, f
A/D
=A/D clock source frequencies (6MHz, 3MHz, 1.5MHz, 0.75MHz)
HT48RB8
Rev. 1.30
5
February 10, 2003
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