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Dual 16-bit address bus; it can access 2 × 2 16 memory locations: 64 KB (65,536 locations) each of ROM (PMEM) and external RAM (XRAM), using two memory buses in a Harvard architecture. On-chip ROM (not included on 803x variants) Four (three full) 8-bit bidirectional input/output ports, bit-addressable; UART (serial port) Two 16-bit counters/timers
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 ...
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.
MCS-51 8051 family – also incl. 8X31, 8X32, 8X52; X=0, 3, 7 or 9; MCS-151 High-performance 8051 instruction set/binary compatible family; 8/16-bit/32-bit. MCS-251 32-bit ALU with 1/8/16/32-bit CISC instruction set and 24-bit external address space (16-bit wide segmented). Fully binary compatible to the 8051 8-bit family. 16-bit
It is surprising that this 8-bit architecture is still in use today, and is still so popular. Of all 8051 compilers, several widely used C compilers exist, but only a few Pascal compilers. Turbo51 is available as freeware and was created with the goal to make a Pascal compiler for MCS-51 processors that will be as fast as Turbo Pascal , will ...
The NEC μCOM series is a series of microprocessors and microcontrollers manufactured by NEC in the 1970s and 1980s. The initial entries in the series were custom-designed 4 and 16-bit designs, but later models in the series were mostly based on the Intel 8080 and Zilog Z80 8-bit designs, and later, the Intel 8086 16-bit design.
The Small Device C Compiler (SDCC) is a free-software, partially retargetable [1] C compiler for 8-bit microcontrollers. It is distributed under the GNU General Public License. The package also contains an assembler, linker, simulator and debugger. SDCC is a popular open-source C compiler for microcontrollers compatible with Intel 8051/MCS-51 ...
In 2006, Atmel released microcontrollers based on the 32-bit AVR32 architecture. This was a completely different architecture unrelated to the 8-bit AVR, intended to compete with the ARM-based processors. It had a 32-bit data path, SIMD and DSP instructions, along with other audio- and video-processing features. The instruction set was similar ...