.The PMC156-S16 is a 1KB 64Byte OTP RISC SOP-16 Microcontroller Unit (MCU/MPU/SOC) manufactured by PADAUK. It is a low-power, RoHS compliant 8-bit MCU with a 1KB on-chip OTP ROM, 16kbytes of SRAM, an industry standard I/O interface, and an embedded DMA controller. It features a 16-bit Harvard architecture RISC CPU, which provides a high-performance high-speed instruction execution. It also has various peripherals including SPI, UART, I2C, Timers, Watchdog, interrupts, and PWM. It is highly suitable for embedded applications such as automotive, RFID, and consumer electronics. It is an excellent choice for providing efficient, low-cost solutions to many applications.