Microchip Technology MPLAB ICD 5 - Page 21

Connecons
User Guide
© 2023 Microchip Technology Inc. and its subsidiaries
DS-50003529B - 21
Tip: Remember to include a decoupling capacitor between VTG and GND.
3.3.4.2 SAM SWD Interface
The Arm
®
SWD interface is a subset of the JTAG interface, making use of TCK and TMS pins.
3.3.4.2.1 Connecng to a SAM SWD Target
When connecting to an SWD device, the 10-pin JTAG connector can be used.
3.3.4.2.2 SAM SWD Pinout
For the 10-pin JTAG connector:
Figure 3-10. SAM SWD Header Pinout
Table 3-6. SAM SWD Pin Descripon
Name SAM Port Pin Description
SWDCLK 4 Serial Wire Debug Clock
SWDIO 2 Serial Wire Debug Data Input/Output
SWO 6 Serial Wire Output (optional- not implemented on all devices)
nSRST 10 Reset
VTG 1 Target voltage reference - not used by MPLAB ICD 5
GND 3, 5, 9 Ground
3.3.5 AVR MCUs Connecons
AVR devices feature various programming and debugging interfaces. Check the device datasheet for
supported interfaces of that device.
The MPLAB ICD 5 ICSP Adapter Board may be used with additional AVR 10-pin or 6-pin JTAG plugin
boards for legacy target connections. Snap o the plugin board needed (see gure below) and plug
into the adapter board 8-pin SIL connector.
3.3.5.1 JTAG Physical Interface
The JTAG interface consists of a four-wire Test Access Port (TAP) controller that is compliant with
the IEEE
®
1149.1 standard. The IEEE standard was developed to provide an industry-standard way
to eciently test circuit board connectivity (Boundary Scan). Microchip AVR and SAM devices have
extended this functionality to include full Programming and On-chip Debugging support.
To use this target interface with MPLAB X IDE, open the Project Properties window, “ICD 5” category,
“Communications” option category. It will say JTAG. Select the JTAG speed.