Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

OVERVIEW OF 8051 FAMILYVarious 8051 Microcontrollers

‰8751 microcontroller

¾UV-EPROM

ƒPROM burnerƒUV-EPROM eraser takes 20 min to erase

‰AT89C51 from

Atmel Corporation

¾Flash (erase before write)

ƒROM burner that supports flashƒA separate eraser is not needed

‰DS89C4x0 from

Dallas Semiconductor

,

now part of

Maxim Corp.

¾Flash

ƒComes with on-chip loader, loading program to on-chip flash via PC COM port