步进马达参考设计.pdf

AN155 STEPPER M OTOR R EFERENCE D ESIGN 1. Introduction timing. The low-pin count package has enough pins to drive the stepper motor and RS232 transceiver, with two Stepper motors are used in a wide variety of additional I/O pins left over for special functions. applications. They are prevalent in consumer office This reference design demonstrates a high equipment such as printers, plotters, copiers, and performance stepper motor system using the scanners. Stepper motors are also used in automotive C8051F300. The reference design provides for both applications for electronic throttle control, dashboard stand-alone demo operation and UART control. The indicators, and climate control systems. Stepper motors reference design may also be used as a platform for are also found in industrial equipment such as robotics, stepper motor code development using the C2D two- electronic component handlers, testers, dispensers, and wire on-chip debug and Flash programming interface. other manufacturing equipment. The reference design is complete with schematic, bill of Stepper motors are often controlled using special materials, printed circuit board artwork, code flowcharts, function ICs that provide limited control functionality. and source code. The software is also available for Such ICs often employ a rudimentary step forward and download from the Silicon Laboratories web site.