Description: The MB7122E is a CMOS 8-bit microcontroller with a built-in ROM, RAM, and I/O ports.

Features:
8-bit CPU core
Built-in ROM (2K bytes)
Built-in RAM (128 bytes)
I/O ports (8-bit)
Clock speed up to 6 MHz
Low power consumption
On-chip oscillator
Interrupt capability
Low voltage operation

Applications: The MB7122E is suitable for a variety of applications, including home appliances, office automation, industrial control, and automotive applications. It can be used for data processing, motor control, and other applications that require low power consumption and high speed.(For reference only)
https://www.utsource.net/itm/p/132841.html