The following sequence enables the Tiny Programming Interface:
- Apply 5V between VCC
and GND
- Depending on the method of reset to be used:
- Either: wait
tTOUT (see System and Reset Characteristics) and
then set the RESET pin low. This will reset the
device and enable the TPI physical layer. The
RESET pin must then be kept low for the
entire programming session
- Or: if the RSTDISBL
configuration bit has been programmed, apply 12V to the
RESET pin. The
RESET pin must be kept at 12V for the
entire programming session
- Wait tRST (see System and Reset Characteristics )
- Keep the TPIDATA pin high for 16 TPICLK cycles
Figure 1. Sequence for enabling the Tiny
Programming Interface