Details, datasheet, quote on part number: HT82M35A
PartHT82M35A
CategoryInterface and Interconnect => Keyboard & Mouse Controllers
Description3/5-Key 3D PS/2 Optical Mouse Controller

General Description

The HT82M35X are designed as 3/5-key 3D PS/2 optical mouse controller. These have serial interface to access the sensor ADNS-5020 or the same compatible series sensor. Refer to the datasheets for detailed register descriptions of the sensors.
CompanyHoltek Semiconductor Inc.
DatasheetDownload HT82M35A datasheet
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Features, Applications
Feature

Operating voltage: 4.0V~5.5V Microsoft 3D Intelli mouse and IBM PS/2 mouse Serial interface with ADNS-5020 Auto detect as to which photo sensor is used 2MHz RC oscillator for system frequency with

The HT82M35X are designed 3D PS/2 optical mouse controller. These have serial interface to access the sensor ADNS-5020 or the same compatible series sensor. Refer to the datasheets for detailed register descriptions of the sensors.

Part No. 3D PS/2 optical mouse controller HT82M35C/HT82M35C-1 (for Avago ADNS-5020) HT82M35D/HT82M35D-1 Interface X/Y-axis Option Avago Sensor Opto 500 DPI Avago Sensor Opto 1000 DPI Avago Sensor Opto 500 DPI Avago Sensor Opto 1000 DPI Z-axis Option Divided by 2 Divided 2 16 DIP Divided by 4 Divided by 4 Package

Pin Name RB, RO, LB I/O I Description Right Button: Normal pull-high resistor (30kW) Rolling Button: Normal pull-high resistor (30kW) Left Button: Normal pull-high resistor (30kW) ²Z² axis input supports three kinds of scroller input Normal pull-high resistor (30kW) Input ports with 30kW pull-high resistor

I/O Serial data for Agilent sensor IC SDIO O Serial data for Agilent sensor IC SCLK
¾ Negative power supply, ground I Chip reset input, low active

¾ 5V positive power supply 2MHz RC oscillator for system frequency with external pull-high resistor (140kW)

¾ No connection I/O PS/2 mouse CLK line I/O PS/2 mouse data line

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² 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.

Symbol VDD IDD VIL2 VIH2 IOL IOH RPH Parameter Operating Voltage Operating Current Test Conditions VDD ¾ 5V Conditions fSYS=2MHz No load, VOL=0.9VDD ¾ Min. -2 10 Typ. Max. 4 0.3VDD VDD 0.4VDD VDD ¾ 50

Input Low Voltage for RB, LB, RO, RB1, RB0, SDIO, PS2CK and PS2D Input High Voltage for RB, LB, RO, RB1, RB0, SDIO, PS2CK and PS2D Input Low Voltage for RES Input High Voltage for RES I/O Port Sink Current I/O Port Source Current ¾ 5V

Symbol tWDTOSC tWDT1 tRES Parameter Watchdog Oscillator Period Watchdog Time-out Period External Reset Low Pulse Width Test Conditions VDD 5V ¾ Conditions ¾ Without WDT prescaler ¾ Min. 8 1 Typ. 17 ¾

X- movement towards the right is positive, moving towards the left is negative Y- upward movement is positive, moving down is negative Z- rolling towards the user is positive, else negative Button status: 1=pressed, 0=released

Byte 1 bit 7: Reserved 6: 0=Stream Mode, 1=Remote Mode 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)

PS/2 mode Sending the commands in the following sequence will set the mouse 3D PS/2 mode. Command X0 Y0 Response From Mouse FAh FAh, 03h

Variable rps, 8, 1, bidirectional, synchronous Bit No. 1st word 2nd word 3rd word RO LB

PS/2 mode. Sending the commands in the following sequence will set the mouse Win2K PS/2 mode. Command Response From Mouse FAh FAh, 04h

Variable rps, 8, 1, bidirectional, synchronous Bit No. 1st word 2nd word 3rd word 4th word RO LB
The x/y data report 9-bit 2¢s complement The z data report 8-bit 2¢s complement

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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