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  2. MCS-51 - Wikipedia

    en.wikipedia.org/wiki/MCS-51

    To permit the use of this feature, some 8051-compatible microcontrollers with internal RAM larger than 256 bytes, or an inability to access external RAM, [20] access internal RAM as if it were external and have a special function register (e.g. PDATA) that permits them to set the upper address of the 256-byte page. This emulates the MCS8051 ...

  3. XC800 family - Wikipedia

    en.wikipedia.org/wiki/XC800_family

    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.

  4. Motorola 68HC11 - Wikipedia

    en.wikipedia.org/wiki/Motorola_68HC11

    In addition, there is an 8 x 8-bit multiply (A x B), with full 16-bit result, and fractional/integer 16-bit by 16-bit divide instructions. A range of 16-bit instructions treat the A and B registers as a combined 16-bit D register for comparison (X and Y registers may also be compared to 16-bit memory operands), addition, subtraction and shift ...

  5. Special function register - Wikipedia

    en.wikipedia.org/wiki/Special_Function_Register

    Some SFR bits may be set directly using SETB/LDB instructions on the SFR's address, whereas others may require usage of specific instructions. The Intel 80196 class microcontroller has 24 SFRs, each 1 byte in size; standard Intel 8051 chips have 21 SFRs.

  6. Atmel - Wikipedia

    en.wikipedia.org/wiki/Atmel

    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.

  7. Comparison of instruction set architectures - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_instruction...

    An instruction set architecture (ISA) is an abstract model of a computer, also referred to as computer architecture.A realization of an ISA is called an implementation.An ISA permits multiple implementations that may vary in performance, physical size, and monetary cost (among other things); because the ISA serves as the interface between software and hardware.

  8. x86 instruction listings - Wikipedia

    en.wikipedia.org/wiki/X86_instruction_listings

    The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor. The x86 instruction set has been extended several times, introducing wider registers and datatypes as well as new ...

  9. In-system programming - Wikipedia

    en.wikipedia.org/wiki/In-system_programming

    In the first method, a connector is manually connected to the programmer. This solution expects the human participation to the programming process that has to connect the programmer to the electronic board with the cable. Hence, this solution is meant for low production volumes. The second method uses test points on the board.