This chip is often referred to as a ROM-less 8051, since it has 0K byte of on-chip ROM. It also has 8K bytes of on-chip program ROM instead of 4K bytes.Ĩ031 microcontroller − It is another member of the 8051 family. 8051 Flavors / MembersĨ052 microcontroller − 8052 has all the standard features of the 8051 microcontroller as well as an extra 128 bytes of RAM and an extra timer. This has led to several versions with different speeds and amounts of on-chip RAM. It means that if you write your program for one flavor of 8051, it will run on other flavors too, regardless of the manufacturer. When it became widely popular, Intel allowed other manufacturers to make and market different flavors of 8051 with its code compatible with 8051. It was referred as system on a chip because it had 128 bytes of RAM, 4K byte of on-chip ROM, two timers, one serial port, and 4 ports (8-bit wide), all on a single chip. In 1981, Intel introduced an 8-bit microcontroller called the 8051. 80 microprocessors were also invented by Intel. The first microprocessor 4004 was invented by Intel Corporation.
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