Optical and Mechanical Encoders Optical Encoders SERIES 65 Optical Encoder Interface FEATURES • Simplified Microprocessor Interface • Interfaces with all Grayhill and Reduces Design Time Most Standard Quadrature Optical • Debounces Encoder Integral Encoders Pushbutton Switch • Power Reduction of Up to 75-90% • Ideal for Battery Powered in Optical Encoder Use Through Applications that Include Optical Power Management Feature Encoders • User Selectable Output Modes: Magnitude/Direction, Up/Down, Standard Quadrature DESCRIPTION The GH65C11-X is designed to receive input (especially advantageous in battery powered modes are: magnitude and direction, up and from standard quadrature optical encoders. systems). Sample rate is a nominal 4K per down count, and standard quadrature. The power management feature allows power second allowing high speed quadrature input. Debouncing of an integral pushbutton switch The optical encoder interface can operate in 1 to the encoder to be applied only during within the optical encoder can also be sampling intervals, thus conserving power of 3 user-selectable output modes. These accomplished. Name Type* Description M0, M1 I Mode selection input pins V P 3–6 Vdc power source DD SOIC/DIP SSOP RES I Reset pin, normally connected to V DD M0 1 18 ØBO/DN/DR M0 1 20 ØBO/DN/DR V P GND, 0v nominal power return SS M1 2 17 ØAO/UP/MG M1 2 19 ØAO/UP/MG ØAI, ØBI I Phase A and B quadrature input pins V 3 16 RC V 3 18 RC DD DD RES 4 15 NC RES 4 17 NC SWI I Switch input pin V 5 V V 5 V SS 14 DD SS 16 DD SWO O Debounced switch output pin ØAI 6 PW V 6 V 13 SS 15 DD ØBI 7 PW ØAI 7 PW NC O No connect, this pin must be left unconnected 12 14 SWI 8 PW ØBI 8 PW 11 13 PW O Power source for encoder power management SWO 9 PW SWI 9 PW 10 12 RC I/O RC oscillator pin SWO 10 PW 11 ØBO/DN/DR O Phase B, down, direction, mode conditional output pin ØAO/UP/MG O Phase A, up, magnitude, mode conditional output pin * Pin Types: I = Input, O = Output, P = Power. ORDERING INFORMATION GH65C11-X-YY Temperature: Packaging: C = Commercial (0° C to 70° C) PD = 18 lead 300 mil wide Plastic DIP N = Industrial (-40° C to 85° C) SO = 18 lead 300 mil wide gull wing SOIC SS* = 20 lead SSOP * The SS package style is not available in the -40°C to 85°C temperature range. Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. For additional information about the use of the GH65 interface chips with optical encoders request Grayhill Application Note #719. Encoder Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com 50