HT48R50A-1/HT48C50-1
A.C. Characteristics
Symbol
Parameter
Test Conditions
V
DD
¾
¾
¾
¾
3V
5V
¾
¾
3V
5V
t
WDT1
t
WDT2
t
WDT3
t
RES
t
SST
t
INT
3V
Watchdog Time-out Period (WDT OSC)
5V
Watchdog Time-out Period (System Clock)
Watchdog Time-out Period (RTC OSC)
External Reset Low Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
¾
¾
¾
¾
¾
Without WDT prescaler
Without WDT prescaler
¾
Wake-up from HALT
¾
Without WDT prescaler
8
¾
¾
1
¾
1
17
1024
7.812
¾
1024
¾
33
¾
¾
¾
¾
¾
ms
t
SYS
ms
ms
t
SYS
ms
2.2V~5.5V
3.3V~5.5V
¾
¾
Conditions
2.2V~5.5V
3.3V~5.5V
2.2V~5.5V
3.3V~5.5V
¾
Min.
400
400
400
400
Typ.
¾
¾
¾
¾
Ta=25°C
Max.
4000
8000
4000
8000
Unit
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
ms
ms
ms
f
SYS1
System Clock (Crystal OSC)
f
SYS2
System Clock (RC OSC)
System Clock (Internal RC)
3.2MHz
Timer I/P Frequency (TMR)
f
SYS3
1600 2500 3500
2000 3200 4500
0
0
45
32
11
¾
¾
90
65
23
4000
8000
180
130
46
f
TIMER
t
WDTOSC
Watchdog Oscillator
Rev. 1.00
6
January 2, 2003
ETC [ ETC ]
