PWM vs. HIGH

[wdmagic]

first here is a good layout for using dc motors with a FET and a PIC, NOTE C3 and C4 are optional if your using motor case to ground.

now as for using that other chip, I dont have the datasheet here right now to look at, but I usually use either a DPDT relay or a FET H-Bridge circuit for reversing, depends on the amps needed. for tiny DC motors a relay is a pretty cheap way to go, and requires no special circuitry. an Hbridge requires 4 fets and a couple transistors but can handle any amperage based on the FETs used. you can also use a lm298 I beleive, as it has dual hbridges built in. but only allows for a certain wattage.