SPMC65P1504A and SPMC65P1502A are the members of 65X series and OTP (One Time Program) solutions. These two devices share similar cores and peripherals. Program memory (ROM) size is the only difference between these two devices. For detailed memory information, please refer to the following section. Major application fields are small home appliance, industry controller, and battery charger. Main features of these two devices are depicted in the next section.