BUY OKI-C1164 https://www.utsource.net/itm/p/807798.html
Fixed Output 1.5 Amp SIP DC/DC Converters
Description: The OKI-C1164 is a CMOS-based 4-bit microcontroller manufactured by Oki Semiconductor. Features: 4-bit CPU 8K bytes of ROM 256 bytes of RAM 8-bit timer/counter 8-bit A/D converter 8-bit PWM output Serial I/O Interrupt controller Applications: The OKI-C1164 is suitable for a variety of applications, including home appliances, office automation, and industrial control. It can be used in applications such as motor control, temperature control, and data acquisition. (For reference only)