The P89V51RD2 is an 80C51 microcontroller with 64 kB Flash and 1024 bytes of data RAM.
The design engineer can choose to run the application with the conventional 80C51 clock rate (12 clocks per machine cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twice the throughput at the same clock frequency.


Another way to benefit from this feature is to keep the same performance by reducing the clock frequency by half, thus dramatically reducing the EMI.
The Flash program memory supports both parallel programming and in serial In-System Programming (ISP)

Features

  • P89V51RD2xx 40 Pin DIP
  • On- Board Compatible USB connector
  • In-System Programming (ISP)
  • Both Manual and Power On Reset
  • 16 x 2 Alphanumeric LCD and trimmer for contrast Control.
  • Multi 12V Output Relays
  • Buzzer
  • Crystal Frequency: 11.0592 MHz
  • 64 KB of on-chip flash user code memory with ISP with 1 KB RAM
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