Chapter 1 Hardware Structure
Symbol
Parameter
Test Conditions
V
DD
3V
I/O Port Source Current
5V
I
OL2
LCD Common and Segment
Current
LCD Common and Segment
Current
Pull-high Resistance
5V
V
LVR
V
LVD
Low Voltage Reset Voltage
Low Voltage Detector Voltage
¾
¾
3V
5V
3V
5V
3V
¾
¾
¾
V
OH
=0.9V
DD
V
OL
=0.1V
DD
Conditions
V
OH
=0.9V
DD
Min.
-2
-5
210
350
-80
-180
20
10
2.7
3.0
Typ.
-4
-8
420
700
-160
-360
60
30
3.0
3.3
Max.
¾
¾
¾
¾
¾
¾
100
50
3.3
3.6
Unit
mA
mA
mA
mA
mA
mA
kW
kW
V
V
I
OH1
I
OH2
R
PH
A.C. Characteristics
Except HT49RU80/HT49CU80
V
DD
=3V & V
DD
=5V (Except HT49C30L, HT49C50L, HT49C70L)
V
DD
=1.5V (For HT49C30L, HT49C50L, HT49C70L)
Symbol
Parameter
Test Conditions
V
DD
Conditions
1.2V~2.2V (For HT49C30L,
HT49C50L, HT49C70L)
f
SYS1
System Clock (Crystal OSC)
¾
Min.
400
Typ.
¾
¾
¾
¾
¾
¾
32768
32768
¾
¾
¾
Ta=25°C
Max.
500
4000
8000
500
4000
8000
¾
¾
500
4000
8000
Unit
kHz
kHz
kHz
kHz
kHz
kHz
Hz
Hz
kHz
kHz
kHz
2.2V~5.5V (Except HT49C30L,
400
HT49C50L, HT49C70L)
3.3V~5.5V (Except HT49C30L,
400
HT49C50L, HT49C70L)
1.2V~2.2V (For HT49C30L,
HT49C50L, HT49C70L)
400
f
SYS2
System Clock (RC OSC)
¾
2.2V~5.5V (Except HT49C30L,
400
HT49C50L, HT49C70L)
3.3V~5.5V (Except HT49C30L,
400
HT49C50L, HT49C70L)
f
SYS3
System Clock
(32768Hz Crystal OSC)
¾
¾
¾
¾
1.2V~2.2V (For HT49C30L,
HT49C50L, HT49C70L)
¾
¾
0
0
0
f
RTCOSC
RTC Frequency
f
TIMER
Timer I/P Frequency
¾
2.2V~5.5V (Except HT49C30L,
HT49C50L, HT49C70L)
3.3V~5.5V (Except HT49C30L,
HT49C50L, HT49C70L)
19
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