4.5 Kit Modifications

SAM L22 Xplained Pro has several resistors that can be used to disconnect I/O pins of the ATSAML22N18A from connectors and on-board ICs and to disconnect power signals.

Info: Note that there are some resistors that aren't mounted by default on the kit listed in the table below.
Table 4-24. Zero Ohm Resistors
DesignatorValueFromToComment
J100cut-strapVCC_P3V3VCC_P3V3_CM_INATSAML22N18A, peripherals and connectors power supply
R1070RU100 OUTVCC_CM_P3V3XAM power supply
R1080RU100 OUTVCC_EDBG_P3V3EDBG power supply
R3050RU302 SDAPB30 I2C SDAAllows complete or partial disconnect of U302, ATECC508A from ATSAML22N18A
R3070RU302 SCLPB31 I2C SCL
R40039REDBG TARGET RESETTARGET MCU RESETDebug interface from the EDBG to the ATSAML22N18A
R4040REDBG SWCLKPA30 SWCLK
R4050REDBG SWDIOPA31 SWDIO
R6010RXAM ADC_SYNC1PB04 GPIOXAM ADC sync interfaces to the ATSAML22N18A.
R6000RXAM ADC_SYNC2PB05 GPIO
R4060REDBG CDC RXPC24 UART TXEDBG CDC and DGI interfaces to the ATSAML22N18A
R4070REDBG I2C SDAPB30 I2C SDA
R4080REDBG I2C SCLPB31 I2C SCL
R414330REDBG CDC TXPC25 UART RX
R4150REDBG SPI MOSIPB22 SPI MOSI
R416330REDBG DGI_GPIO0PB04 GPIO
R417330REDBG DGI_GPIO1PB05 GPIO
R418330REDBG DGI_GPIO2PC00 GPIO
R419330REDBG DGI_GPIO3PC01 GPIO
R420330REDBG SPI MISOPB24 SPI MISO
R4250REDBG SPI SCKPB23 SPI SCK
R4260REDBG SSPB25 SPI SS
R4270RTARGET RESET SENSETARGET_MCU_RESETReset sense signal to EDBG, used to detect external resets
R9000RTARGET MCU RESETRESET UNOATSAML22N18A reset signal to Arduino connectors
Figure 4-4. Assembly Drawing Top
Figure 4-5. Assembly Drawing Bottom