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HT46R22 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc |
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HT46R22 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc |
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5 / 46 page  Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VIH1 Input High Voltage for I/O Ports, TMR and INT 3V ¾ 0.7VDD ¾ VDD V 5V ¾ 0.7VDD ¾ VDD V VIL2 Input Low Voltage (RES) 3V ¾ 0 ¾ 0.4VDD V 5V ¾ 0 ¾ 0.4VDD V VIH2 Input High Voltage (RES) 3V ¾ 0.9VDD ¾ VDD V 5V ¾ 0.9VDD ¾ VDD V VLVR Low Voltage Reset ¾¾ 2.7 3 3.3 V IOL I/O Port Sink Current 3V VOL=0.1VDD 48 ¾ mA 5V VOL=0.1VDD 10 20 ¾ mA IOH I/O Port Source Current 3V VOH=0.9VDD -2 -4 ¾ mA 5V VOH=0.9VDD -5 -10 ¾ mA RPH Pull-high Resistance 3V ¾ 40 60 80 k W 5V ¾ 10 30 50 k W EAD A/D Conversion Error ¾¾ ¾ ±0.5 ±1 LSB A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS1 System Clock (Crystal OSC) 3V ¾ 400 ¾ 4000 kHz 5V ¾ 400 ¾ 8000 kHz fSYS2 System Clock (RC OSC) 3V ¾ 400 ¾ 4000 kHz 5V ¾ 400 ¾ 8000 kHz fTIMER Timer I/P Frequency (TMR) 3V ¾ 0 ¾ 4000 kHz 5V ¾ 0 ¾ 8000 kHz tAD A/D Clock Period 5V ¾ 1 ¾¾ ms tADC A/D Conversion Time ¾¾ ¾ 76 ¾ tAD tWDTOSC Watchdog Oscillator 3V ¾ 43 86 168 ms 5V ¾ 35 65 130 ms tRES External Reset Low Pulse Width ¾¾ 1 ¾¾ ms tSST System Start-up Timer Period ¾ Wake-up from HALT ¾ 1024 ¾ *tSYS tINT Interrupt Pulse Width ¾¾ 1 ¾¾ ms tIIC I 2C BUS Clock Period ¾ Connect to external pull-high resistor 2k W 64 ¾¾ *tSYS tOPT Option Load Time During Reset 3V System power on, WDT time-out at normal mode, RES is reset 45 90 180 ms 5V 35 70 140 ms Note: *tSYS=1/fSYS HT46R22/HT46C22 Rev. 1.10 5 October 2, 2002 |
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