AT89C51 is low-voltage, high-performance CMOS 8-bit microcomputer with 4K bytes of In-System Programmable Flash memory and compatible with the industry-standard 80C51 instruction set and pinout...
AT89S52-24PU is low-voltage, high-performance CMOS 8-bit microcomputer with 8K bytes of In-System Programmable Flash memory and compatible with the industry-standard 80C51 instruction set and pinout.
AT89S52-24PU Key Parameters
Supply Voltage4.0-5.5V
I/O Pins32
Flash8 KB
RAM..