|Description||3D Vista Optical Mouse Controller
Holtek is delighted to now announce the release of a new Vista Optical Mouse Controller device offering, namely the HT82M28A. Containing the usual 3D and both 3-key and 5-key functions and capable of interfacing to both AVAGO and PIXART sensor types, the HT82M28A’s fully supports the new Microsoft Vista wheel tilt functions. This new device works together with the AVAGO 2610, 2620, 5020 and PIXART 3101 Optical Mouse Sensors and provides users with a wide 400 to 1600 DPI resolution choice range.
|Company||Holtek Semiconductor Inc.|
|Datasheet||Download HT82M28A datasheet
Operating voltage: 4.4V~5.25V Compatible with Microsoft Windows 2000 and USB transceiver Single chip solution especially for USB mouse func-
Supports 5/7 buttons and Z-axis input Z-axis can support only encoder Z/2 scroller input Complete Universal Serial Bus specs V2.0 compati-HALT function and wake-up feature reduce power
Plug and Play functions Minimal external components 6MHz crystal oscillator for system clock Interface compliant with A2620, A5020, and
Vista tilt mouse protocol supported 3 key or 5 key mode can be selected by circuit DPI can be selected high or low by circuit Tilt or Non-tilt protocol can be selected by circuit Serial Bus Interface Engine (SIE)
is a Plug and Play 3D USB Mouse controller. The HT82M28A can support the USB Standard Request as well as HID Class Request version 1.1. The Z-axis can support only Z/2 encoder scroller input. It requires minimal external components to implement 3D and Windows Vista 7 key USB mouse. All its features combined and make up this versatile Holtek 8-bit MCU with an on-chip USB interface logic. The USB is specified by the Universal Serial Bus Specification V2.0. The USB product of 5 key mode is 2083H, and the USB product of 3 key mode is 2082H.
Pin Name VSS V33O USBD+ USBDRESET SDIO I/O ¾ O I/O I I/O O SCLK I Negative power supply, ground 3.3V voltage output USB data plus, F/W auto-detect USBD+ for USB. USB data minus, F/W auto-detect USB- for USB. Chip reset input, low active Serial data for optical sensor IC SDIO Serial data for optical sensor IC SCLK DPI selection, N/C or GND(connect a 5.1kW pull-down resistor) For N/C-800dpi; GND-400dpi For N/C-1000dpi; GND-500dpi For N/C-800dpi; GND-1600dpi Click button detection. Input ports with 30kW pull-high resistor. Input ports with pull-high resistor. These pads can function as Left, Right, Middle, RB0, RB1, L_TILT and R_TILT button input lines. Z-axis input supports only Z/2 encoder scroller input. Drives LED output 5V positive power supply 6MHz OSC output 6MHz OSC input Description
Supply to VSS+6V MCU Input to VDD+0.3V USB Input to V33O+0.3V 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. Storage to 125°C Operating to 70°C
Symbol VDD IDD ISUS VIL2 VIH2 VPOR IOL Parameter Operating Voltage Operating Current (Crystal OSC) USB Suspend Mode Input Low Voltage M, R, L_TILT, R_TILT) Input High Voltage M, R, L_TILT, R_TILT) Input Low Voltage (RESET) Input High Voltage (RESET) Built-in Power on Reset VDD Detection Voltage Sink Current (LED) Test Conditions VDD VOL=0.8V No load, fSYS=6MHz Conditions ¾ USB mode Min. Typ. Max. Ta=25°C Unit V mA
Symbol fSYS Parameter System Clock (Crystal OSC) Test Conditions VDD 5V Conditions ¾ Min. 0 Typ. 6000 Max. ¾
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