HT49CA1 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT49CA1' PDF : 58 Pages View PDF
HT49RA1/HT49CA1
D.C. Characteristics
Ta=25°C
Symbol
Parameter
VDD
Operating Voltage
Test Conditions
VDD
Conditions
¾
¾
Min. Typ. Max. Unit
2.0
¾
3.6
V
IDD
Operating Current (RC OSC)
3V No load, fSYS=4MHz
¾
0.7 1.5 mA
ISTB1 Standby Current (*fS=T1)
3V
No load, system HALT,
LCD off at HALT
¾
0.1
1
mA
ISTB2
ISTB3
VIL1
Standby Current
(*fS=32.768kHz OSC)
Standby Current
(*fS=WDT RC OSC)
Input Low Voltage for I/O Ports,
TMR0/TMR1 and INT0/INT1
3V
No load, system HALT,
LCD On at HALT, C type
¾
3V
No load, system HALT
LCD On at HALT, C type
¾
3V
¾
0
2.5
5
mA
2
5
mA
¾ 0.3VDD V
VIH1
Input High Voltage for I/O Ports,
TMR0/TMR1 and INT0/INT1
3V
¾
0.7VDD ¾
VDD
V
VIL2
Input Low Voltage (RES)
3V
¾
0
¾ 0.4VDD V
VIH2
Input High Voltage (RES)
3V
¾
0.9VDD ¾
VDD
V
IOL1
I/O Port & REM Sink Current
3V VOL=0.1VDD
4
8
¾
mA
IOH1
I/O Port & REM Source Current
3V VOH=0.9VDD
-5
-7
¾
mA
IOL2
LCD Common and Segment Current 3V VOL=0.1VDD
210 420 ¾
mA
IOH2
LCD Common and Segment Current 3V VOH=0.9VDD
-80 -160 ¾
mA
RPH
Pull-high Resistance of I/O Ports
3V
¾
100 150 200 kW
VLVR Low Voltage Reset Voltage
LVR 2.1V option
¾
LVR 3.15V optio
1.98 2.10 2.22 V
2.98 3.15 3.32 V
VLVD Low Voltage Detector Voltage
¾ LVD voltage 2.2V option 2.08 2.20 2.32 V
LVD voltage 3.3V option 3.12 3.30 3.50 V
VPOR
VDD Start Voltage to Ensure
Power-on Reset
¾
¾
¾
¾ 100 mV
RPOR
VDD Rise Rate to Ensure
Power-on Reset
¾
¾
0.035 ¾
¾ V/ms
Note: tSYS=1/fSYS
²*fS² please refer to WDT clock option
Rev. 1.10
4
March 30, 2014
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