8-Bit Microcontroller Solution for Electric Bicycles

"Small but powerful," Infineon XC864 will become the most popular microcontroller in the emerging electric bicycle market. This 8-bit microcontroller is available in a small TSSOP-20 package with a CAPCOM motor control module for 3-phase brushless DC motor applications. The pedal movement is measured by Timer2 to calculate the assistance needed to assist the cyclist in riding smoothly. In addition, it has overcurrent and overvoltage protection.

Application Background Integrating a motor into a bicycle assists the cyclist in reducing the physical effort to step on the pedal, which has become an ever-evolving trend. This article discusses the use of Electronic Control Units (ECUs) for electric bicycles to provide the appropriate electric power assistance based on the physique of the rider's foot pedals. The microcontroller is equivalent to the brain of the ECU and is responsible for the commutation of the three-phase brushless DC motor and the electric assistance needed to handle the ride.

Three-phase brushless DC motors are popular in the electric bicycle market for their durability, linear control characteristics, high efficiency, and excellent torque to volume ratio. For brushless DC motor control, determining rotor position and implementing a complex control mechanism is tricky and difficult. Infineon offers a variety of microcontrollers for motor drive systems ranging from full-featured 8-bit and 16-bit microcontrollers to 32-bit TriCore microcontrollers that can control any motor drive system and integrate peripherals.

Feeder Parts

SMT Feeder types,

1. different smt machines with different smt feeders, but different model of the same brand machine can use the same feeder,like Panasonic Feeder.


2. Base on the size and types of components, smt feeder could be divided into three types : Tube feeder; Tray Feeder; Bulk Feeder.
Tape feeders with the different size such as 8mm, 16mm, 24mm, 32mm, 44mm, 56mm etc.


3. Base on the feeder condition, smt feeder also could be divided into four types: original new SMT feeder parts, used original SMT feeder parts, imitation/copy new SMT feeder parts, imitation/copy used SMT feeder parts,



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