MC3479

Order this document by MC3479/D MC3479 Stepper Motor Driver The MC3479 is designed to drive a two–phase stepper motor in the bipolar mode. The circuit consists of four input sections, a logic decoding/sequencing section, two driver–stages for the motor coils, and an output to indicate the Phase A drive state. Single Supply Operation: 7.2 to 16.5 V STEPPER MOTOR DRIVER SEMICONDUCTOR TECHNICAL DATA 350 mA/Coil Drive Capability Clamp Diodes Provided for Back–EMF Suppression Selectable CW/CCW and Full/Half Step Operation Selectable High/Low Output Impedance (Half Step Mode) TTL/CMOS Compatible Inputs Input Hysteresis: 400 mV Minimum Phase Logic Can Be Initialized to Phase A Phase A Output Drive State Indication (Open–Collector) Available in Standard DIP and Surface Mount P SUFFIX PLASTIC PACKAGE CASE 648C Figure 1. Representative Block Diagram VM PIN CONNECTIONS VD 1 2 3 4 5 Bias/Set 6 7 8 16 15 14 13 12 11 10 9 VM L3 L4 Gnd Phase A CW/CCW Full/Half Step L1 Clk Clock Driver Gnd L2 L1 L2 CW/CCW CW/CCW Logic VD L3 Full/Half Step F/H Step Driver Clk OIC (Top View) L4 VM VD L2 2 1 L1 3 Gnd Gnd Gnd 4 5 6 7 8 9 Clk 10 11 12 13 Full/Half Step OIC Phase A CW/CCW 20 19 18 L4 17 Gnd 16 Gnd 15 Gnd 14 Gnd L3 OIC OIC Phase A Bias/Set Gnd Gnd Bias/Set ORDERING INFORMATION Device MC3479P Operating Temperature Range TA = 0° to +70°C Package Plastic CW/CCW Full/Half Step OIC Clk © Motorola, Inc. 1996 INPUT TRUTH TABLE Input Low CW Full Step Hi Z Input High C...