Holtek HT46R22, Руководство пользователя

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A.C. Characteristics
Ta=25
°
C
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
f
SYS
System Clock
¾
2.2V~5.5V 400
¾
4000 kHz
¾
3.3V~5.5V 400
¾
8000 kHz
f
TIMER
Timer I/P Frequency
(TMR)
¾
2.2V~5.5V 0
¾
4000 kHz
¾
3.3V~5.5V 0
¾
8000 kHz
t
WDTOSC
Watchdog Oscillator Period
3V
¾
45 90 180
m
s
5V
¾
32 65 130
m
s
t
RES
External Reset Low Pulse
Width
¾ ¾
1
¾ ¾ m
s
t
SST
System Start-up Timer
Period
¾
Wake-up from HALT
¾
1024
¾
*t
SYS
t
LVR
Low Voltage Width to Reset
¾ ¾
1
¾ ¾
ms
t
INT
Interrupt Pulse Width
¾ ¾
1
¾ ¾ m
s
t
AD
A/D Clock Period
¾ ¾
1
¾ ¾ m
s
t
ADC
A/D Conversion Time
¾ ¾ ¾
76
¾
t
AD
t
ADCS
A/D Sampling Time
¾ ¾ ¾
32
¾
t
AD
t
IIC
I
2
C Bus Clock Period
¾
Connect to external
pull-high resistor 2k
W
64
¾ ¾
*t
SYS
*t
SYS
= 1/f
SYS
14
A/D Type MCU