Connecting Atmel-ICE to a TPI Target

Tiny Programming Interface (TPI) is a programming-only interface for some AVR® ATtiny devices. It is not a debugging interface, and these devices do not have On-Chip Debug (OCD) capability. When designing an application PCB which includes an AVR with the TPI interface, the pinout shown in the table below should be used.

TPI Header Pinout

tpi_header.png

Connection to a 6-pin 100-mil TPI header

Use the 6-pin 100-mil tap on the flat cable (included in some kits) to connect to a standard 100-mil TPI header.

Connection to a 6-pin 50-mil TPI header

Use the adapter board (included in some kits) to connect to a standard 50-mil TPI header.

Connection to a custom 100-mil header

The 10-pin mini-squid cable should be used to connect between the Atmel-ICE AVR connector port and the target board. Six connections are required, as described in the table below.

Atmel-ICE TPI Pin Mapping

tpi_pinout.png
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