Aiming at different application, MCU products of Shanghai Belling is divided into general purpose MCU and special purpose MCU. General purpose MCU is used in consumer electronics products, household appliances and intelligent controller,which has IO type series and AD type series, low-cost OTP ROM and cost-effective MTP ROM, rich function modules, varies package type. Special purpose MCU is used in motor control, which has high integration and minimal external components, built-in special function modules for motor control. Aiming at motor control, promotion for 8051 core makes it possible for high computing speed and excellent data processing ability.