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HT49CA1 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc |
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HT49CA1 Datasheet(HTML) 4 Page - Holtek Semiconductor Inc |
4 / 57 page D.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VDD Operating Voltage ¾¾ 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 Standby Current (*fS=32.768kHz OSC) 3V No load, system HALT, LCD On at HALT, C type ¾ 2.5 5 mA ISTB3 Standby Current (*fS=WDT RC OSC) 3V No load, system HALT LCD On at HALT, C type ¾ 25 mA VIL1 Input Low Voltage for I/O Ports, TMR0/TMR1 and INT0/INT1 3V ¾ 0 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 48 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 ¾mA IOH2 LCD Common and Segment Current 3V VOH=0.9VDD -80 -160 ¾mA RPH Pull-high Resistance of I/O Ports 3V ¾ 100 150 200 k W VLVR Low Voltage Reset Voltage ¾ LVR 2.1V option 1.98 2.10 2.22 V LVR 3.15V optio 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 ¾¾ ¾ ¾ 100 mV RPOR VDD Rise Rate to Ensure Power-on Reset ¾¾ 0.035 ¾¾ V/ms Note: tSYS=1/fSYS ²*fS² please refer to WDT clock option HT49RA1/HT49CA1 Rev. 1.10 4 March 30, 2014 |
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