HT48R0AA-1
A.C. Characteristics
Ta=25°C
Test Conditions
Conditions
Symbol
Parameter
Min.
Typ.
Max.
Unit
VDD
¾
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
400
400
400
400
0
4000
8000
4000
8000
4000
8000
180
kHz
kHz
kHz
kHz
kHz
kHz
¾
¾
¾
¾
¾
¾
90
65
23
17
fSYS1
System Clock (Crystal OSC)
System Clock (RC OSC)
¾
¾
fSYS2
¾
¾
Timer I/P Frequency
(TMR0/TMR1)
fTIMER
0
¾
3V
5V
3V
5V
45
32
11
8
ms
ms
tWDTOSC
Watchdog Oscillator Period
130
¾
46
ms
ms
Watchdog Time-out Period
(WDT OSC)
tWDT1
Without WDT prescaler
Without WDT prescaler
33
Watchdog Time-out Period
(System Clock)
tWDT2
tSYS*
1024
¾
¾
¾
tRES
tSST
tINT
External Reset Low Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
1
¾
¾
¾
¾
¾
¾
¾
1024
¾
¾
¾
¾
2
ms
tSYS
*
Wake-up from HALT
1
¾
¾
ms
tLVR
Low Voltage Reset Time
0.25
1
ms
Note: *tSYS=1/fSYS1, 1/fSYS2
Rev. 1.10
5
July 27, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
