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HT82M91A Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT82M91A Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 6 page  HT82M91A 3D USB Mouse Block Diagram 1 January 28, 2000 Features · Complete Universal Serial Bus specifica- tion compatibility · Serial Bus Interface Engine (SIE) · USB transceiver · Supports three buttons (R, M, L) and three axes (X, Y, Z) input · Z axis can support two kinds of scroller in- put (optomechanical and mechanical) · Single chip solution especially for USB mouse function · Halt function and wake-up feature reduce power consumption · Has plug and Play functions · Minimal external components · 6MHz crystal oscillator for system clock · 18-pin DIP package General Description HT82M91A is a 3D mouse encoder chip espe- cially designed for USB applications. The HT82M91A can support the USB Standard Re- quest as well as HID Class Request version 1.0. It can be briefly described as a Holtek 8-bit mC with an on-chip USB interface logic. It can use minimal external components to implement three key-switches and four photo-coupler mouse. The USB is specified by the Universal Serial Bus Specification. US B T r ans c e i v er US B Re c e i v e r US B T r ans m i t t er V o l t age R egul at o r Cl o c k G ene r a t o r RC RE S E T R egi s t er Se t U S B Se r i a l I n t e r f a c e E n gi ne (S I E ) and C ont r o l Logi c Mai n S t at e m a c h i n e S u s pend C ont r o l Ho l t e k 8- bi t Mi c ro c o n t ro l l e r FI FO s ´ 2 US B D + US B D - V 33O OS C 1 OS C 2 VD D VS S |
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Similar Description - HT82M91A |
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