步进电机驱动IC:
Allegro: A3951, A3952, A3953, A3955, A3957, A3958, A3959, A3966, A3967, A3968,
A3972, A3973, A3977, A3980, A3983, A3984, UDN2916,  L6219
SANKEN: SPI7210M,SPI7215M,SLA7024M, SLA7026M, SLA7027MU, SLA7042M, SLA7044M, SLA7062M,
SLA7060M, SPI7210M, SPI7215M, SLA7032M, SLA7033M, SLA7052M, SLA7070M, SLA7078M, SLA7050M,SLA7051M, SLA7075M