HT46RU25 Holtek Semiconductor Inc., HT46RU25 Datasheet - Page 6

• Manufacturer Part Number: HT46RU25
• Description: Ht46ru25/ht46cu25 -- A/d Type 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

A.C. Characteristics
Note: *t
Rev. 1.30
f
f
t
f
t
t
t
t
t
t
t
t
t
SYS1
SYS2
RTCOSC
TIMER
WDTOSC
RES
SST
LVR
INT
AD
ADC
ADCS
IIC
Symbol
SYS
=1/f
System Clock
System Clock
(32768Hz Crystal OSC)
RTC Frequency
Timer I/P Frequency
(TMR0, TMR1, TMR2)
Watchdog Oscillator Period
External Reset Low Pulse Width
System Start-up Timer Period
Low Voltage Width to Reset
Interrupt Pulse Width
A/D Clock Period
A/D Conversion Time
A/D Sampling Time
I
2
C Bus Clock Period
SYS
Parameter
V
3V
5V
DD
Test Conditions
2.2V~5.5V
3.3V~5.5V
2.2V~5.5V
2.2V~5.5V
3.3V~5.5V
Power-up or Wake-up
from HALT
Connect to external
pull-high resistor 2k
6
Conditions
Min.
0.25
400
400
HT46RU25/HT46CU25
45
32
64
0
0
1
1
1
32768
32768
1024
Typ.
90
65
80
32
1
Max.
4000
8000
4000
8000
180
130
2
March 9, 2007
Ta=25 C
*t
*t
Unit
kHz
kHz
kHz
kHz
ms
t
t
Hz
Hz
SYS
SYS
AD
AD
s
s
s
s
s