Atmel 89c5115 can't get to the bootloader. Any ideas?
Hoping this is the right place to ask. I have a SIMPLE board with a Atmel AT89C5115, a FTDI USB chip FT230 to TX and RX. 12MHz crystal and caps, a reset button and voltage regulator. I have made (2) identical boards. 4.7uF cap on reset to Vcc. All of the other pins connect to a header pin. I can see the crystal running, VCC and Gnd at the proper values. I see the ascii character "U" coming into the 89c5115 rx pin but there is nothing on the Tx pin. It should be echoing the "U" character. I have tried a 22uf cap in the reset circuit. Multiple Resets and combinations of power/reset/Flip software but I can not get past this point. Does anyone have any additional ideas of what to try next? Thanks in advance for your help.
I have tried disconnecting the TX on the uP so that it is not connected to anything, still nothing.