Connecting To A Tpi Target - Microchip Technology Atmel-ICE User Manual

Use the adapter board (included in some kits) to connect to a standard 50-mil SPI 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.
Important:
The SPI interface is effectively disabled when the debugWIRE Enable (DWEN) fuse is programmed, even
if the SPIEN fuse is also programmed. To re-enable the SPI interface, the 'disable debugWIRE' command
must be issued while in a debugWIRE debugging session. Disabling debugWIRE in this manner requires
that the SPIEN fuse is already programmed. If MPLAB X IDE or Atmel Studio fails to disable debugWIRE,
it is probably because the SPIEN fuse is NOT programmed. If this is the case, it is necessary to use a
high-voltage programming interface to program the SPIEN fuse.
Info:
The SPI interface is often referred to as "ISP" since it was the first in-system programming interface on
Microchip AVR products. Other interfaces are now available for in-system programming.
Table 3-6. Atmel-ICE SPI Pin Mapping
Atmel-ICE AVR PORT Pins
Pin 1 (TCK)
Pin 2 (GND)
Pin 3 (TDO)
Pin 4 (VTG)
Pin 5 (TMS)
Pin 6 (nSRST)
Pin 7 (not connected)
Pin 8 (nTRST)
Pin 9 (TDI)
Pin 10 (GND)
3.8

Connecting to a TPI Target

The recommended pinout for the 6-pin TPI connector is shown in
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.
©
2020 Microchip Technology Inc.
Programmers and Debuggers
Target Pins Mini-Squid Pin
SCK
GND
MISO
VTG
/RESET
MOSI
Figure 4-13.
User Guide
Connecting the Atmel-ICE
SPI Pinout
1 3
2 6
3 1
4 2
5
6 5
7
8
9 4
0
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