This part is a kind of semiconductor called RM0016.

Function of this product has STM8S and STM8AF microcontroller families.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

RM0016 Reference manual STM8S and STM8AF microcontroller families Introduction This reference manual provides complete information for application developers on how to use STM8S and STM8AF microcontroller memory and peripherals. The STM8AF is a family of microcontrollers designed for automotive applications, with different memory densities, packages and peripherals:  The low density STM8AF devices are the STM8AF6223/26 with 8 Kbytes of Flash memory.  The medium density STM8AF devices are the STM8AF624x, STM8AF6266/68, STM8AF612x/4x and STM8AF6166/68 microcontrollers with 16 to 32 Kbytes of Flash memory.  The high density STM8AF devices are the STM8AF52xx STM8AF6269/8x/Ax, STM8AF51xx, and STM8AF6178/99/9A microcontrollers with 32 to 128 Kbytes of Flash memory. The STM8S is a famil [ ... ]

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