EasyPoint N40P112 is a miniature joystick module concept based on contact-less, magnetic movement detection. The integrated twodimensional linear encoder monitors the movement of the magnet incorporated in the knob and provides directly the x and y coordinates via output. An integrated mechanical push button built in the module provides a “select” function. Figure
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Datasheet E a s y P o i n t TM N 4 0 P 11 2 Navigation Module 1 General Description EasyPoint N40P112 is a miniature joystick module concept based on contact-less, magnetic movement detection. The integrated twodimensional linear encoder monitors the movement of the magnet incorporated in the knob and provides directly the x and y coordinates via output. An integrated mechanical push button built in the module provides a “select” function. Figure Figure Typical Application Diagram 2 Key Features XY coordinates direct read with 8-bit resolution 2.7V to 3.6V operating voltage Down to 1.7V I/O voltage Lateral magnet movement radius up to 1.0mm High-speed interface Configurable interrupt output for motion detection Push button feature 3 Applications The EasyPoint N40P112 is ideal for small form-factor manual input devices in battery operated equipment, such as Mobile phones, MP3 players, PDAs, GPS receivers, Gaming consoles and Analog joystick replacement. 4 Benefits High reliability due to magnetic non-contact sensing Low power consumption Two operating modes - Idle mode - Low Power mode DC ~ 3.6V VDD N40P112 VDDp DC ~ 3.6V Supply I/O 2x 1k~10k 100k AS5013 Two-dimensional magnetic encoder Push button GND Address GND 0x40 VDDp 0x41 SCL SDA INTn Reset/ Switch Interface Interrupt GPIO GPIO 1 - 34 EasyPointTM N40P112 Datasheet - Contents Contents 1 General Description 1 2 Key 1 3 1 4 1 5 Pin Assignments 4 Pin 4 6 Absolute Maximum Ratings 5 7 Electrical 6 Operating 6 Digital IO Pads DC/AC 6 Switch Characteristics 7 Mechanical Specifications 8 Recommended Reflow Temperature 8 Using the N40P112 Module 9 Powering up the 9 Registers 9 C Source Code Example 10 Initialization 10 Offset Calibration 10 Dead Zone 11 Interrupt Routine 11 9 XY Coordinates 12 EasyPoint Operating 12 Knob Displacement and Register Value 13 Operation Principle 14 10 interface 15 Interface 15 Electrical 16 Timing 17 Modes 17 Automatic Increment of Address Pointer 18 Invalid Addresses 18 Reading 18 High Speed Mode 21 Automatic Increment of Address Pointer 22 Invalid Addresses 22 SDA, SCL Input Filters 22 11 Registers 23 Control Register 1 0Fh 23 X Register 25 Y_res_int Register 11h 25 Xp Register 25 Xn Register 25 2 - 34 EasyPointTM N40P112 Datasheet - Contents Yp Register 26 Yn Register 26 M_ctrl Register 26 J_ctrl Register 27 T_ctrl Register 2Dh 27 Control Register 2 2Eh 27 Registers Table 28 12 Package Drawings and Markings 30 13 Ordering 33 3 - 34 EasyPointTM N40P112 Datasheet - Pin Assignments 5 Pin Assignments Figure Schematics U1 14 ModeOTP 16 PDIO 15 PCLK 5 tb0 6 tb1 7 tb2 8 tb3 9 Test_Coil 17 EPAD AS5013 VDD 12 VDDp 11 VSS 13 RESET 3 INT 4 SCL 2 SDA 1 ADDR 10 VDDp VDD C1 C2 100n RESETn GND INTn SCL SDA ADDR GND Dome_Switch SWITCHn VDDp VDD GND SDA SCL RESETn INTn SWITCHn ADDR 1 2 3 4 5 6 7 8 9 EP SMD 9pin Pin Descriptions Table Pin Descriptions Connector Pin # 1 2 3 4 5 Pin Type Power Bi-directional Input Input Open drain Output Input VDDp IO power supply for SCL, SDA, INTn, 1.7V ~ 3.6V VDD Core power supply, 2.7V ~ 3.6V SDA bus data, open drain SCL bus clock RESETn Reset input, active LOW 0 GND Reset, all registers return to their reset value 1 VDDp Normal operation mode INTn Interrupt output, open drain Active LOW Inactive Hi-Z SWITCHn Push button signal output Not pushed Open Pushed GND ADDR Address selection input 0 GND 0x40 1 VDDp 0x41 4 - 34 EasyPointTM N40P112 Datasheet - Absolute Maximum Ratings 6 Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Electrical Characteristics on page 6 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Datasheet - Ordering Information 13 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Ordering Code N40P112-00001-H 0.35N ±0.10N force N40P112-00011-H 0.35N ±0.10N force N40P112-00002-H 0.55N ±0.15N force N40P112-00012-H 0.55N ±0.15N force Delivery Form Tubes Tape & Reel Tubes Tape & Reel Note All products are RoHS compliant. Buy our products or get free samples online at ICdirect: Technical Support is available at For further information and requests, please contact us or find your local distributor at 33 - 34 EasyPointTM N40P112 Datasheet - Copyrights Copyrights Copyright 1997-2011, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 34 - 34 |
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