| ??? 03/12/01 12:47 Read: times |
#9949 - AT89C52 Circuit Design |
I'm Trying to connect a AT89C52 to a serial port, LCD and Matrix Keypad, I think I have the serial port and Lcd design correctly, although these have not been tested and i'm have having difficulty with a 4x3 matrix keypad, do i need to use a pull up resistor network, any help would be much appreciated especially a schematic
thanks paul |
| Topic | Author | Date |
| AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: Peter | 01/01/70 00:00 | |
| RE: Peter | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
| RE: AT89C52 Circuit Design | 01/01/70 00:00 | |
RE: AT89C52 Circuit Design | 01/01/70 00:00 |