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HT82M98A 3D USB+PS2 Mouse
Features
* * * * * *
Complete Universal Serial Bus specs V1.0 compatibility Serial Bus Interface Engine (SIE) USB transceiver Microsoft 3D Intelli mouse and IBM PS/2 mouse compatible Supports three buttons (R, M, L) and three axes (X, Y, Z) input Z axis can support two kinds of scroller input (optomechanical and mechanical)
* * * * * *
Single chip solution especially for USB mouse function Halt function and wake-up feature reduce power consumption Plug and Play functions Minimal external components 6MHz crystal oscillator for system clock 18-pin DIP package
General Description
HT82M98A is a 3D mouse controller especially designed for USB and PS/2 applications. The HT82M98A can support the USB Standard Request as well as HID Class Request version 1.0 draft 4. It is compatible with Microsoft Intelli 3D PS/2 mouse. The X/Y axis photo input with built-in Holteks special dynamic photo-input resistor and Z axis can support two kinds of scroller input, namely; optomechanical and mechanical. It requires minimal external components to implement 3D USB plus PS/2 mouse. It can be briefly described as a Holtek 8-bit mC with an on-chip USB interface logic. The USB is specified by the Universal Serial Bus Specification V1.0.
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HT82M98A
Block Diagram
USB T r a n s c e iv e r USB R e c e iv e r USB In te rfa c (S a Co Lo S e r ia l e E n g in e IE ) nd n tro l g ic R e g is te r Set
USBD+ USBD-
USB T r a n s m itte r
H o lte k 8 - b it M ic r o c o n tr o lle r
V33O
V o lta g e R e g u la to r
OSC1 OSC2
C lo c k G e n e ra to r
M a in S ta te m a c h in e
F IF O s 2
RC RESET
S u s p e n s io n C o n tro l
VDD VSS
Pin Assignment
VSS 1 2 3 4 5 6 7 8 9 V33O U S B D + /C L K U S B D - /D A T A RESET X1 X2 Y1 Y2 18 17 16 15 14 13 12 11 10 L Z2 Z1 R M OSC1 OSC2 VDD LED
HT82M 98A 1 8 D IP
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HT82M98A
Pin Description
Pin No. Pin Name USBD+/ CLK USBD-/ DATA I/O Description USB data plus or PS2 Clock, F/W auto-detect USBD+ for USB, CLK for PS2 USB data minus or PS2 Data, F/W auto-detect USB- for USB, DATA for PS2 X-axis photo input with built-in Holtek's special dynamic photo input resistor Y-axis photo input with built-in Holtek's special dynamic photo input resistor Z-axis input supports two kinds of scroller input; optomechanical and mechanical Input ports with pull-high resistor. These pads can function as Left, Right and Middle button input lines. Negative power supply, ground. 3.3V voltage output Chip reset input, low active 5V positive power supply 6MHz OSC output 6MHz OSC input USB Interface (2 pins) 3 4 I/O I/O
General purpose I/O (9 pins) 6, 7 8, 9 10, 11 12, 13, 14 1 2 5 15 16 17 18 X1, X2 Y1, Y2 Z1, Z2 L, R, M I I I I
Miscellaneous (7 pins) VSS V33O RESET LED VDD OSC2 OSC1 3/4 O I 3/4 O I
I/O Drives LED output
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Absolute Maximum Ratings
Supply Voltage.................................-0.3V to 6V mC Input Voltage ...........VSS-0.3V to VDD+0.3V USB Input Voltage .......VSS-0.3V to V33O+0.3V Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Storage Temperature.................-50C to 125C Operating Temperature ..............-25C to 70C
D.C. Characteristics
Symbol VDD IDD ISTB VIL1 VIH1 VIL2 VIH2 VIH3 VPOR IOL1 IOH1 IOL2 Parameter Operating Voltage Operating Current (Crystal OSC) Standby Current Test Conditions VDD 3/4 5V 5V No load, fSYS=6MHz Conditions 3/4 USB mode PS/2 mode Min. 4.5 3/4 3/4 3/4 0 3.5 0 3.5 2.8 3.5 3/4 3/4 3/4 Typ. 3/4 10 3 3/4 3/4 3/4 3/4 3/4 3/4 3/4 4 -4 50
Ta=25C Max. Unit 5.5 3/4 3/4 250 1.0 5 1.5 5 3.6 3.9 3/4 3/4 3/4 V mA mA mA V V V V V V mA mA mA
No load, system HALT 3/4 3/4 3/4 3/4 3/4 3/4 VOL=0.5V VOL=4.5V VOL=4.5V
Input Low Voltage for I/O 5V Ports Input High Voltage for mC 5V I/O Ports Input Low Voltage (RESET) Input High Voltage (RESET) 5V 5V
Input High Voltage for 3.3V USB I/O Ports Power on Reset VDD Detection Voltage Output Port Source Current 5V
Output Port Sink Current 5V 5V
Output Port Sink Current 5V (LED)
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A.C. Characteristics
Symbol fSYS tWDTosc tWDT tPWRT tOST Parameter System Clock (Crystal OSC) Watchdog Oscillator Watchdog Time-out Period (RC OSC) Power-up Timer Period Oscillation Start-up Timer Period Test Conditions VDD 5V 3/4 3/4 3/4 3/4 Conditions 3/4 3/4 3/4 3/4 Power-up or wake-up form HALT Min. 0 80 768 3/4 3/4 Typ. 6000 100 1024 10 1024 Max. 3/4 120 1280 3/4 3/4 Ta=25C Unit kHz ms ms ms tSYS
Note: tSYS=1/fSYS
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HT82M98A
Application Circuits
This application circuit is for reference only
V 1M W 0 .1 m F 4 1 .5 k W 2 3 4 5 6 7 8 9 0 .1 m F RECEPT_A 3 2 1 1 VSS V33O U S B D + /C L K U S B D - /D A T A RESET X1 X2 Y1 Y2 Z2 Z1 OSC1 OSC2 VDD LED M R L 18 17 16 15 14 13 12 11 10 1kW 6M Hz
CC
1kW
HT82M 98A
V 1M W 0 .1 m F 1 .5 k W 2 3 4 5 6 7 8 9 0 .1 m F RECEPT_A 4 3 2 1 1 VSS V33O U S B D + /C L K U S B D - /D A T A RESET X1 X2 Y1 Y2 Z2 Z1 OSC1 OSC2 VDD LED M R L 18 17 16 15 14 13 12 11 10 E ncoder 6M H z 10kW
CC
1kW
H T82M 98A
EVZVXC 00112B
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Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright O 2000 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.
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