BUY M2764A-20F1 https://www.utsource.net/itm/p/652809.html
NMOS 64K 8K x 8 UV EPROM
The M2764A-20F1 is an 8-bit microcontroller manufactured by STMicroelectronics. It is a member of the M2764A family of microcontrollers, which are based on the 8051 core architecture. The M2764A-20F1 is a 28-pin DIP (Dual Inline Package) device with a maximum operating frequency of 20MHz. It features 4K bytes of program memory, 128 bytes of RAM, and 32 I/O lines. It also includes an 8-channel 10-bit A/D converter, a watchdog timer, and two 16-bit timers. The M2764A-20F1 is suitable for a wide range of applications, including industrial control, consumer electronics, automotive, and medical. It is also suitable for use in embedded systems, such as home automation, security systems, and remote monitoring. (For reference only)