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HT82M91A Datasheet(PDF) 2 Page - Holtek Semiconductor Inc |
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HT82M91A Datasheet(HTML) 2 Page - Holtek Semiconductor Inc |
2 / 6 page Pin Assignment Pin Description Pin No. Pin Name I/O Description USB Interface (2 pins) 3 USBD+ I/O USB data plus 4 USBD- I/O USB data minus General purpose I/O (9 pins) 6, 7 X1, X2 I X-axis photo input with built-in Holtek's special dynamic photo in- put resistor 8, 9 Y1, Y2 I Y-axis photo input with built-in Holtek's special dynamic photo in- put resistor 10, 11 Z1, Z2 I Z-axis input supports two kinds of scroller input; optomechanical and mechanical 12, 13, 14 L, R, M I These pins are input port with pull-high resistor. These pads can function as Left, Right and Middle button input lines. Miscellaneous (7 pins) 1 VSS ¾ Negative power supply, ground 2 V33O O 3.3V voltage output 5 RESET I Chip reset input, low active 15 LED I/O Drives LED output 16 VDD ¾ 5V positive power supply 17 OSC2 O 6MHz OSC output 18 OSC1 I 6MHz OSC input HT82M91A 2 January 28, 2000 HT 8 2 M 9 1 A 1 8 D I P 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 VS S V 33O US B D + US B D - RE S E T X1 X2 Y1 Y2 OS C 1 OS C 2 VD D LE D M R L Z2 Z1 |
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