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Details, datasheet, quote on part number:SH1211
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| Part: | SH1211 |
| Category: | Interface and Interconnect => Keyboard & Mouse Controllers => Mouse encoder |
| Description: | MouseCoder® Ergonomic Mouse PS/2 And RS232 Encoder |
| Company: | Semtech Corporation |
| Datasheet: | Download SH1211 datasheet File size : 240 kB |
| Request For quote: | Find where to buy SH1211
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Datasheet text preview:
SH1211 MouseCoder® Ergonomic Mouse PS/2 and RS232 Encoder
HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODER® FAMILY DESCRIPTION The SH1211 MouseCoder® is an easy-to-use single-chip multimouse encoder with an advanced motion algorithm for accurate cursor control. The SH1211 offers low power consumption in a smallfootprint package, and connects to a host serial or a PS/2 mouse port. The SH1211 is designed for use with a Fujitsu Takamisawa FID-828 Hall-effect sensor (HulaPointTM), a resistive analog joystick sensor (like the CTS 252), a switch joystick sensor, an FSR sensor, or a Varatouch MicroPointTM sensor, as well as others. The SH1211 provides an external port for hot-plug connection of a PS/2 mouse, including one with wheel function. SH1211 serial communication is unidirectional at a fixed speed of 1200 Baud. PS/2 communication is bidirectional at 10 Kbps. The SH1211 is a CMOS device operating at 4 MHz. It can return mouse reports at the rate of 100 per second. The SH1211 is compatible with the standard twobutton mouse protocol, the standard three-button mouse protocol, and standard wheel mouse protocols. It implements all commands from and to the system, as defined in the IBM PS/2 mouse communication protocol. The SH1211's low power consumption makes it ideal for battery operated systems. SEN00 SEN01 SEN02 SEN03 VREF _RESET VSS2 VDD
8 9 16
PRELIMINARY
FEATURES · Advanced motion-control algorithm for accurate cursor control · Low power consumption in a 3.3 to 5.5 volt operating range · Compatible with standard twobutton, three-button, and wheel mice · RS232 or PS/2 host interface · Works with a Hall-effect sensor · Works with a resistive analog joystick sensor · Works with a switch joystick sensor · Works with an FSR sensor · Works with a Varatouch MicroPointTM sensor · Available in a small 32-pin plastic LQFP package
APPLICATIONS · Embedded HulaPointsTM · Industrial panels · Joystick applications PIN ASSIGNMENTS SEN15 INTSEL TxD SCLK SEN04 SEN05 SEN06 SEN07
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· Industrial keyboards · Instrumentation · Gaming
SH1211-FG LQFP
SEN14 SEN13 SEN12 SENSEL2 SEN11 MDAT/RTS SENSEL1 EMCLK
17
SEN10 SEN09 EMDAT MCLK SEN08 VSS _OSCOUT OSCIN
Semtech, the Semtech logo, MouseCoder, and HulaPoint are marks of Semtech Corporation. Force Sensing Resistor and FSR are marks of Interlink Electronics, Inc. MicroPoint is a mark of Varatouch Technology, Inc. All other marks belong to their respective owners. Copyright ©1995-2003 Semtech Corporation SH1211 data sheet v1.10 (2003-07)
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ORDERING CODE SH1211-FG EVK-SH1211 LQFP 32-pin, 0.8 mm pitch, TA = -20°C to +85°C Evaluation kit
FUNCTIONAL DESCRIPTION The SH1211 consists functionally of five major sections (see block diagram below). These are the Sensor Interface, the 16-bit Timer, the Oscillator Circuit, the PS/2 Communication Port and the RS232 Communication Port. All sections communicate with each other and operate concurrently. BLOCK DIAGRAM
Left, Middle/Up, Right, & Down Buttons
4
Data Buffer
Switch Interface
MCLK MDAT
Host PS/2 Communication Port
X Input
Analog Signal Input
Y Input
TxD RTS
Host Serial Communication Port
Control Sensor Interface
Sensor Power Strobe
EMCLK EMDAT
External PS/2 Port
16-bit Timer
RESET
Power-on Reset
Oscillator Circuit
2
Copyright ©1995-2003 Semtech Corporation SH1211 data sheet v1.10 (2003-07)
OSCIN-OSCOUT
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MOUSE EMULATION The SH1211 emulates either a standard 3-button mouse or a standard wheel mouse. The state of the button configuration pin (BCONF, pin 20) determines which mouse type is emulated. The pin left floating specifies 3-button mode, the pin tied to ground specifies wheel mode. In 3-button mode, the left, right and middle buttons are implemented. In wheel mode, the left, right, up, and down buttons are implemented; pressing up and down buttons together emulates a middle-button press. POWER CONSUMPTION The SH1211 typically consumes less than 3 mA in standby for HulaPointTM or analog joystick sensors and less than 1 µA for other sensors. EXTERNAL PS/2 PORT The SH1211 provides an external PS/2 mouse port. Data from this port is seamlessly merged with data from the embedded sensor. External mice, including those with a mouse wheel, can be hot-plug connected. HOST INTERFACE The SH1211 communicates with the host system using either PS/2 or serial. The state of the interface select pin (INTSEL, pin 26) determines which interface is used. If the pin is tied to ground, PS/2 is used; if it is tied to power (Vcc), serial is used.
SENSOR CONFIGURATIONS The SH1211 has built-in support applicable to many sensors, including the following: HulaPointTM Fujitsu Takamisawa FID-828 Hall-effect sensor Analog joystick sensor such as the CTS 252 Switch joystick sensor FSRTM sensor (Force Sensing ResistorTM, Interlink Electronics) Varatouch MicroPointTM sensor
The states of the sensor select pins 18 and 21 (SENSEL1, SENSEL2) indicate which sensor is being used. The name, definition and use of the 16 sensor pins (SEN00-SEN15: pins 14, 29-32, 15, 16, 20, 22-25) vary depending on which sensor is being used. Refer to the schematics and pin definitions in this data sheet for specifics.
Copyright ©1995-2003 Semtech Corporation SH1211 data sheet v1.10 (2003-07)
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