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Tip: The touch buttons in the kit are placed on the inner layers of the PCB and have a very small overlay.
Due to the short distance from the sensor to the touch area, it might be oversensitive. Different overlays
can be used to avoid saturation of the sensor.
Table 4-7. QTouch
ATtiny3217 Pin
PA7
PA6
4.4
Embedded Debugger Implementation
The ATtiny3217 Xplained Pro contains an Embedded Debugger (EDBG), which can be used to program and debug
the ATtiny3217 using Unified Program Debug Interface (UPDI). The Embedded Debugger also includes a Virtual
COM Port interface over UART, a Data Gateway Interface over SPI, I
includes an XAM extension processor to the Embedded Debugger for on-board current measurement. Atmel Studio
can be used as a front-end for the Embedded Debugger.
4.4.1
Unified Program Debug Interface
The Unified Program Debug Interface (UPDI) uses one pin to communicate with the target. For further information on
how to use the programming and debugging capabilities of the EDBG, see section
Table 4-8. UPDI Connections
ATtiny3217 Pin
PA0
4.4.2
Virtual COM Port
The Embedded Debugger acts as a Virtual COM Port gateway by using one of the ATtiny3217 UARTs. For further
information on how to use the Virtual COM Port, see section
Table 4-9. Virtual COM Port Connections
ATtiny3217 Pin
PB2
PB3
4.4.3
Data Gateway Interface
The Embedded Debugger features a Data Gateway Interface (DGI) by using either an SPI or I²C. The DGI can be
used to send a variety of data from the ATtiny3217 to the host PC. For further information on how to use the DGI
interface, see the
Table 4-10. DGI Interface Connections when using SPI
ATtiny3217 Pin
PC4
PC2
PC1
PC0
©
2020 Microchip Technology Inc.
®
Connection
Silkscreen Text
QT BTN1
QT BTN2
Function
UPDI interface
Function
UART TXD (ATtiny3217 TX line)
UART RXD (ATtiny3217 RX line)
Data Visualizer
and the
EDBG User
Function
SPI SS (Slave select) (ATtiny3217 is Master) -
SPI MOSI (Master Out, Slave In)
SPI MISO (Master In, Slave Out)
SPI SCK (Clock Out)
ATtiny3217 Xplained Pro
Shared Functionality
EXT1
EXT1
2
C, and two ATtiny3217 GPIOs. The kit also
Shared Functionality
UPDI debug connector
3.1 Embedded
Debugger.
Shared Functionality
EXT1
and
EXT1
and
Guide.
Shared Functionality
EXT1
and
EXT1
and
EXT1
and
User Guide
Hardware User Guide
3.1 Embedded
Debugger.
EXT3
EXT3
EXT3
EXT3
EXT3
DS50002765B-page 17
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