Features
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Work with any analog Joystick sensors such as CTS 252 and 254
series
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Work with Fujitsu FID-828 ErgoTrac Hall-effect sensors
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Configurable PS/2 and RS-232 interface
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Built-in oscillator, analog and digital circuit
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Advanced motion control algorithm
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Resistor-adjustable motion speed
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Built-in EEPROM to store control parameters and 128 bytes for
the host usage
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Compatible with the IBM and Microsoft two-button and the
Logitech three-button mouse protocols
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Works with standard Windows® mouse drivers
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Small SSOP 20 pin package: 7.8x7.2mm 2.0 Max (LxWxH)
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Ultra low power consumption. 50uA(idle), 360uA(operation) for
10k analog joystick sensor under 3.3V; 110uA (idle), 1mA (operation) for
FID-828 sensor under 5V
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2.2V to 5.5V operating voltage
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Industry temperature range: -40°C to +85°C
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QFN package and Extended temperature range (-40°C to +125°C)
versions are available upon request
Overview
The SK7300 joystick mouse encoder is an
easy-touse single chip encoder that interfaces any analog joystick sensors such
as CTS 252 and 254 series, and Fujitsu FID-828 ErgoTrac Hall-effect sensors.
Equipped with an advanced motion algorithm, the SK7300 offers low power
consumption in small footprint package. The device can be linked through either
the serial or PS/2 type mouse port of the host system.
The SK7300 is compatible with the IBM and
Microsoft two-button and the Logitech three-button mouse protocols. The IC also
supports Sprintek extended mouse protocols to allow the host to control the
motion parameters and other parameters. Communication through the serial port
is half-duplex at a fixed speed of 1200 Baud. PS/2 communication is
bidirectional at 10 Kbps.
The SK7300 implements all commands to and from
the host system, as defined in the IBM PS/2 mouse communication protocol and
extended Sprintek SK7300 mouse protocol defined in this document. Typically,
consuming 50uA in idle state, the SK7300 is ideal for battery-operated systems.
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