AT89S8253-24AU, Микроконтроллер 8-Бит, 8051, 24МГц, 12КБ Flash [TQFP-44]

8051 Architecture Flash ISP (In-System Programmable) Microcontrollers, Atmel
Atmel offers Flash 8051 microcontrollers featuring In-System Programming (ISP) that they can be programmed with the appropriate software, either in parallel or in serial mode.