89C2051 Demo Board with RS232 Interface
A general purpose 20 pin 89C2051 development board with on board power supply circuit, RS232 port for serial interface with computer and other serial devices, reset switch, power status LED .
• Onboard MAX232 interface circuit for easy communication with a computer and other serial devices
• DC plug-in jack for power input(12V AC/DC)
• Onboard bridge rectifier enables the board to accept both AC and DC input voltages
• Onboard 5V regulator(LM7805) with filtering capacitors and heat sink
• Power Status LED(Green).
• Onboard quartz crystal 11.0592 Mhz oscillator circuit
• Port extensions for all ports
• 12V,5V and Gnd bus provided