HT48R0AA-1
A.C. Characteristics
Symbol
Parameter
Test Conditions
V
DD
¾
¾
¾
¾
¾
¾
3V
5V
t
WDT1
t
WDT2
t
RES
t
SST
t
INT
t
LVR
Watchdog Time-out Period
(WDT OSC)
Watchdog Time-out Period
(System Clock)
External Reset Low Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
Low Voltage Reset Time
3V
Without WDT prescaler
5V
¾
¾
¾
¾
¾
Without WDT prescaler
¾
Wake-up from HALT
¾
¾
8
¾
1
¾
1
0.25
17
1024
¾
1024
¾
1
33
¾
¾
¾
¾
2
ms
t
SYS
*
ms
t
SYS
*
ms
ms
Conditions
2.2V~5.5V
3.3V~5.5V
2.2V~5.5V
3.3V~5.5V
2.2V~5.5V
3.3V~5.5V
¾
¾
Min.
400
400
400
400
0
0
45
32
11
Typ.
¾
¾
¾
¾
¾
¾
90
65
23
Max.
4000
8000
4000
8000
4000
8000
180
130
46
Ta=25°C
Unit
kHz
kHz
kHz
kHz
kHz
kHz
ms
ms
ms
f
SYS1
System Clock (Crystal OSC)
f
SYS2
System Clock (RC OSC)
Timer I/P Frequency
(TMR0/TMR1)
f
TIMER
t
WDTOSC
Watchdog Oscillator Period
Note: *t
SYS
=1/f
SYS1
, 1/f
SYS2
Rev. 1.10
5
July 27, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
