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HT82M32B Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT82M32B Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
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3 / 11 page  A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions tWDTOSC Watchdog Oscillator Period 5V ¾ 32 65 130 ms tWDT1 Watchdog Time-out Period 5V Without WDT prescaler 8 17 33 ms tRES External Reset Low Pulse Width ¾¾ 1 ¾¾ ms HT82M32A/HT82M32B Rev. 1.00 3 January 24, 2006 Functional Description PS/2 Mouse · PS/2 status byte Byte 1 bit 7: Reserved 6: 0=Stream Mode, 1=Remote Mode 5: 0=Disabled, 1=Enabled 4: 0=Scaling 1:1, 1=Scaling 2:1 3: 1=Wrap Mode, 0=Stream or Remote (different from IBM specs.) 2: 1=Left Button Pressed 1: 1=Middle Button Pressed 0: 1=Right Button Pressed Byte 2 Bit 0~7 current resolution setting (Bit 0=LSB) Byte 3 Bit 0~7 current sampling rate (Bit 0=LSB) · Standard PS/2 data format Bit No. 76543210 1st word YV XV YS XS 1 MB RO LB 2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 · Data format for 3D PS/2 Bit No. 76543210 1st word YV XV YS XS 1 MB RO LB 2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 4th word Z7 Z6 Z5 Z4 Z3 Z2 Z1 Z0 The x/y data report is 9-bit 2 ¢s complement The z data report is 8-bit 2 ¢s complement · Data format for 5-button Wheel Mouse Bit No. 76543210 1st word 0 0 YS XS 1 MB RO LB 2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 4th word 0 0 RB1 RB0 Z3 Z2 Z1 Z0 X- movement towards the right is positive, moving to- wards the left is negative Y- upward movement is positive, moving down is nega- tive Z- rolling towards the user is positive, else negative Button status: 1=pressed, 0=released · Mouse mode changes between Standard and 3D PS/2 mode Sending the commands in the following sequence will set the mouse to 3D PS/2 mode. Command Response From Mouse F3h FAh C8h FAh F3h FAh 64h FAh F3h FAh 50h FAh F2h FAh, 03h · Mouse mode changes between Standard and Win2K PS/2 mode. Sending the commands in the following sequence will set the mouse to Win2K PS/2 mode. Command Response From Mouse F3h FAh C8h FAh F3h FAh C8h FAh F3h FAh 50h FAh F2h FAh, 04h ¨ Any time the PC sends a reset ²FFh² command to the mouse, it will reset the mouse to Standard PS/2 mode. ¨ After power-on reset is initiated, the mouse is set to Standard PS/2 mode. |
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