FAQ

Microcontrollers

80C51 Microcontrollers
I want to link the microcontroller to my PC using the serial port, but it doesn't work. What do I have to do?
How to Receive a DMX512 Protocol using an 87C51
I want to connect a 12MHz Xtal to input pins XTAL1, XTAL2 on the microcontroller. Which capacitor values should I use? What type of capacitor do you recommend
Can I use the MOVX instruction with R0 or R1 to access external 512 kbytes RAM memory?
Designing with 87C751 Using a Software UART
Clock Synchronization Using a 87C51 Microcontroller
Unused input pins on the 80C51 - What to do?
Causing an Interrupt
I programmed and verified code on the "Flash MCU". I cannot get the parts to execute the code in my application. How can I get my code to execute
I have programmed and run code on the "Flash MCU". Now I cannot get the Flash MCU to erase and program as before
I am programming a "Flash MCU" using IAP (In-Application Programming) The microcontroller does not consistently program or erase. How can I get consistent programming and erasing?
Can I put 12V on the Vpp of the 89C51Rx2 or 89C66x?
What is the difference between the P89C51RD2BA and P89C51RD2HBA?