HT46RU25/HT46CU25
A.C. Characteristics
Ta=25°C
Test Conditions
Conditions
2.2V~5.5V
Symbol
Parameter
Min.
Typ.
Max.
Unit
VDD
¾
400
400
4000
8000
kHz
kHz
¾
¾
fSYS1
System Clock
3.3V~5.5V
¾
System Clock
fSYS2
2.2V~5.5V
32768
Hz
¾
¾
¾
(32768Hz Crystal OSC)
tRTCOSC
RTC Frequency
32768
¾
Hz
kHz
kHz
ms
¾
¾
¾
3V
5V
¾
¾
¾
0
¾
4000
8000
180
130
¾
2.2V~5.5V
Timer I/P Frequency
(TMR0, TMR1, TMR2)
fTIMER
3.3V~5.5V
0
¾
45
32
1
90
¾
¾
¾
tWDTOSC
Watchdog Oscillator Period
65
ms
tRES
tSST
tLVR
tINT
External Reset Low Pulse Width
System Start-up Timer Period
¾
ms
Power-up or Wake-up
from HALT
*tSYS
ms
1024
¾
¾
¾
Low Voltage Width to Reset
Interrupt Pulse Width
A/D Clock Period
0.25
1
1
2
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
80
32
¾
¾
¾
¾
ms
ms
tAD
1
tADC
tADCS
tAD
tAD
A/D Conversion Time
A/D Sampling Time
¾
¾
Connect to external
I2C Bus Clock Period
64
tIIC
*tSYS
¾
¾
¾
pull-high resistor 2kW
Note: *tSYS=1/fSYS
Rev. 1.30
6
March 9, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
