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Download VR4181 specs - Delorie Software
Transcript
CHAPTER 19 TOUCH PANEL INTERFACE UNIT (PIU) 19.5 Relationships among TPX, TPY, ADIN, and AUDIOIN Pins and States State PadState(2:0) TPX(1:0) Note PIU disable (pen status detection) Disable Low-power standby Standby TPY(1:0) ADIN(3:0) HH D− −−−− 00 00 −−−− Pen status detection WaitPenTouch/Interval HH D− −−−− Voltage detection at general-purpose AD0 port ADPortScan 00 00 −−−I Voltage detection at general-purpose AD1 port ADPortScan 00 00 −−I− Voltage detection at general-purpose AD2 port ADPortScan 00 00 −I−− Voltage detection at audio input port ADPortScan 00 00 I−−− TPY1=H, TPY0=L, TPX0=samp (X+) PadDataScan −I HL −−−− TPY1=L, TPY0=H, TPX0=samp (X–) PadDataScan −I LH −−−− TPX1=H, TPX0=L, TPY0=samp (Y+) PadDataScan HL −I −−−− TPX1=L, TPX0=H, TPY0=samp (Y−) PadDataScan LH −I −−−− Touch pressure detection (Z) PadDataScan HH d− −−−− Note The states of pins are not guaranteed when the PadState(2:0) that precedes the CPU’s Suspend or Hibernate instruction execution is in a state other then the Disable state. Remarks 0 : Low level input 1 : High level input L : Low level output H : High level output l : A/D converter input D : Touch interrupt input (with a pull-down resistor) d : No touch interrupt input (with a pull-down resistor) − : Don’t care Z : Hi-Z (high-impedance) User’s Manual U14272EJ1V0UM00 425
