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DT-PROTO20 Pin MCS-51 is a AT89S2051 based proto board which has RS232 communication line and in-system programming support for microcontroller which also has ISP feature. This module comes with array pads for you to put external circuits. You can start experimenting, make a simple application, or make a prototype such as : LED controller, motor driver controller, main controller for robot, exchanging data with PC, reading digital sensor value, etc.

Dimension : 10.1 cm (L) x 9cm (W) x 2.2 cm (H)

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Specifications :

  • Based on AT89S2051 which has 2K byte Flash PEROM and 128 byte RAM.
  • Support 20-pin MCS-51 variant such as AT89Sx051, AT89LPx051, AT89Cx051.
  • 15 I/O lines,
  • There are lines which connected to RST, X1, and X2 pin.
  • 9 - 12 VDC working voltage. There is +5 VDC for external circuit.
  • 5x2 header for in-system programming (Atmel standard) using programmer device.
  • 1 RJ-11 connector for UART RS-232 communication port.
  • Using 11,0592 MHz as external cystal oscillator.
  • External reset circuit with brown-out detector and manual reset.
  • Comes with proto board which has 686 non through-hole pads (pitch=0.1").
  • Starting from s/n 51.44.185, DT-PROTO 20 Pin MCS-51 will use plated through-hole PCB with +/- 787 pads.
  • There are 3 lines of pad which each of which is connected to each other. You can use them for power supply line (VIN, GND, +5V) or other purpose.
  • Comes with tester software to test port 1 & port3 and UART RS232 serial communication.


Includes :

  • 1x DT-PROTO 20 Pin MCS-51.
  • 1x Serial cable.
  • 1x Quick start.
  • 1x CD.

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