HT46R232/HT46C232
A.C. Characteristics
Ta=25°C
Test Conditions
Conditions
2.2V~5.5V
Symbol
Parameter
Min.
Typ.
Max.
Unit
VDD
¾
¾
¾
¾
3V
5V
¾
¾
¾
¾
¾
¾
400
400
0
4000
8000
4000
8000
180
130
¾
kHz
kHz
kHz
kHz
¾
¾
fSYS
System Clock
3.3V~5.5V
2.2V~5.5V
¾
Timer I/P Frequency
(TMR0/TMR1)
fTIMER
3.3V~5.5V
0
¾
45
32
1
90
65
¾
¾
ms
ms
tWDTOSC
Watchdog Oscillator Period
¾
tRES
tSST
tINT
External Reset Low Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
¾
ms
*tSYS
Wake-up from HALT
1024
¾
¾
1
¾
¾
¾
¾
¾
¾
ms
ms
tAD
A/D Clock Period
1
¾
¾
tADC
tADCS
tAD
tAD
A/D Conversion Time
A/D Sampling Time
76
32
¾
¾
¾
¾
Connect to external
I2C Bus Clock Period
64
tIIC
*tSYS
¾
¾
¾
pull-high resistor 2kW
Note: *tSYS=1/fSYS
Rev. 1.40
5
November 23, 2005
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
