The MB90M405 series is a general-purpose 16-bit microcontroller, developed for applications requiring fluorescent display tube panel control. Each microcontroller is equipped with 60 highly voltage-resistant output pins, needed for fluorescent display control. The command structure inherits the same AT architecture as the F2MC-8L and F2MC-16L, in order to provide enhanced C-language support, improved extended/signed multiplication/division instructions in addressing mode, and enhanced bit processing. In addition, an onboard 32-bit accumulator allows long word processing.