8051 Microcontroller

The SI80MC51 is an Intel microcontroller compatible, which is a true computer on chip. The Product incorporates all of the features found in a microprocessor CPU : ALU, Program Counter, Stack Pointer and Registers. It also has added the other features needed to make a complete computer : ROM, RAM, parallel I / O, serial I / O, counters, and a clock circuit. The prime use of a microcontroller is to control the operation does not change over the of a machine using a fixed program that is stored in ROM and that lifetime of the system SI80MC51 8 bit microcontroller is optimized. for control - oriented applications that require lower power, higher integration and higher performance.

• Eight - bit CPU.
• Sixteen - bit program counter and data pointer.
• Eight - bit program status word.
• Eight - bit stack pointer.
• Internal ROM of 4k.
• Internal RAM of 128 bytes.
• Four register banks, each containing eight registers.
• Sixteen bytes, which may be addressed at the bit level.
• Eighty bytes of general - purpose data memory.
• Thirty - two input / output pins arranged as four 8 bit ports P0 - P3.
• Full duplex serial data receiver / transmitter : SBUF.
• Control registers : TCON, TMOD, SCON, PCON, IP, and IE.
• Two external and three internal interrupt sources.
• Five Interrupts are provided.
• Fully synthesizable Register Transfer Level (RTL) VHDL.