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HT9315 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc |
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HT9315 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc |
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5 / 27 page  Electrical Characteristics FOSC=3.5795MHz, Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VDD Operating Voltage ¾¾ 2 ¾ 5.5 V IDD Operating Current 2.5V Pulse Off-hook Keypad entry No load ¾ 0.2 1 mA Tone ¾ 0.6 2 mA ISTB Standby Current 1V On-hook, no load No entry ¾¾ 1 mA VR Memory Retention Voltage ¾¾ 1 5.5 V IR Memory Retention Current 1V On-hook ¾ 0.1 0.2 mA VIL Input Low Voltage ¾¾ VSS ¾ 0.2VDD V VIH Input High Voltage ¾¾ 0.8VDD ¾ VDD V IXMO XMUTE Leakage Current ¾ VXMUTE=12V, No entry ¾¾ 1 mA IOLXM XMUTE Sink Current 2.5V VXMUTE=0.5V 1 ¾¾ mA IHKS HKS Pin Input Current 2.5V VHKS=2.5V ¾¾ 0.1 mA RHFI HFI Pull-Low Resistance 2.5V VHFI=2.5V ¾ 200 ¾ k W RHDI HDI Pull-High Resistance 2.5V VHDI=0V ¾ 200 ¾ k W IOH1 Keypad Pin Source Current 2.5V VOH=0V -4 ¾-40 mA IOL1 Keypad Pin Sink Current 2.5V VOL=2.5V 200 400 ¾mA IOH2 HFO Pin Source Current 2.5V VOH=2V -1 ¾¾ mA IOL2 HFO Pin Sink Current 2.5V VOL=0.5V 1 ¾¾ mA IOH3 HDO Pin Source Current 2.5V VOH=2V -1 ¾¾ mA IOL3 HDO Pin Sink Current 2.5V VOL=0.5V 1 ¾¾ mA TFP Pause Time After Flash ¾ Control key ¾ 0.2 ¾ s Digit key ¾ 1 ¾ TRP One-key Redialing Pause Time ¾ One-key redialing ¾ 1 ¾ s TDB Key-in Debounce Time ¾¾ ¾ 20 ¾ ms TBRK Break Time for One-key Redialing ¾ One-key redialing ¾ 1.2 ¾ s FOSC System Frequency ¾ Crystal=3.5795MHz 3.5759 3.5795 3.5831 MHz HT9315 Series Rev. 1.20 5 October 1, 2002 |
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