Intel 8051

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The Intel 8051 is an 8-bit microcontroller monolithic integrated circuit (family), introduced in 1980.

The 8051 is the original version with 4 KB ROM and 128 byte RAM. The 8052 had 8 KB ROM and 256 byte RAM. There are also EPROM-based variants (8751 etc.), ROM-less versions (8031 with 128 bytes RAM, 8032 with 256 bytes RAM), and countless later versions from a large number of manufacturers in NMOS and CMOS, also with more peripherals built in.


Pinout (click to enlarge)

Used in

Some instruments using part Intel 8051

Instrument Manufacturer Class Model Description Introduced
11A32 Tektronix Plug-in 11A32 400 MHz dual channel vertical plug-in 1987
11A34 Tektronix Plug-in 11A34 Quad channel 300 MHz amplifier 1987

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