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Intel's first MCS-51 microcontroller was the 8051, with 4 KB ROM and 128 byte RAM. Variants starting with 87 have a user-programmable EPROM, sometimes UV-erasable. Variants with a C as the third character are some kind of CMOS . 8031 and 8032 are ROM-less versions, with 128 and 256 bytes of RAM.
An AT89c2051 microcontroller in circuit. The Atmel AT89 series is an Intel 8051-compatible family of 8 bit microcontrollers (μCs) manufactured by the Atmel Corporation.. Based on the Intel 8051 core, the AT89 series remains very popular as general purpose microcontrollers, due to their industry standard instruction set, their low unit cost, and the availability of these chips in DIL (DIP ...
Manufactures a line of 8-bit 8051-compatible microcontrollers, notable for high speeds (50–100 MIPS) and large memories in relatively small package sizes. A free IDE is available that supports the USB-connected ToolStick line of modular prototyping boards. These microcontrollers were originally developed by Cygnal.
Its products included microcontrollers (8-bit AVR, 32-bit AVR, 32-bit ARM-based, automotive grade, and 8-bit Intel 8051 derivatives) radio-frequency (RF) devices including Wi-Fi, EEPROM, and flash memory devices, symmetric and asymmetric security chips, touch sensors and controllers, and application-specific products.
J. H. Wharton was the architect of the instruction set of the Intel MCS-51, [3] commonly known as the 8051. The MCS-51 and its derivatives are Intel's highest volume microprocessor, [8] and among the most implemented instruction set architectures of all time. [2] [3]
SAB-C515-LN by Infineon is based on the 8051. The Infineon XC800 family is an 8-bit microcontroller family, first introduced in 2005, [1] with a dual cycle optimized 8051 "E-Warp" [2] [3] core. The XC800 family is divided into two categories, the A-Family for Automotive and the I-Family for Industrial and multi-market applications.
The DS80C390 is a microcontroller, introduced by Dallas Semiconductor (later part of Maxim Integrated Products, now part of Analog Devices), whose architecture is derived from that of the Intel MCS-51 (aka. 8051) processor series. It contains a code memory address space of twenty-two bits.
Also, different status registers are mapped into the SFR, for use in checking the status of the 8051, and changing some operational parameters of the 8051. Some SFR bits may be set directly using SETB/LDB instructions on the SFR's address, whereas others may require usage of specific instructions.