Microchip Technology ATSAMB11ZR, User Manual

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EXT3 pin SAM B11ZR
pin Function Shared functionality
10 [SPI_SS_B/GPIO] AO_GPIO_2 GPIO Temperature Sensor ,EXT1
11 [TWI_SDA] LP_GPIO_14*/
AO_GPIO_1 I²C SDA DEBUG I²C , Crypto
Authentication Device
12 [TWI_SCL] LP_GPIO_15 I²C SCL DEBUG I²C , Crypto
Authentication Device
13 [USART_RX] LP_GPIO_6/
LP_GPIO_2 UART2 RX/UART1 RX * EDBG UART
14 [USART_TX] LP_GPIO_7/
LP_GPIO_3 UART2 TX/ UART1 TX * EDBG UART
15 [SPI_SS_A] LP_GPIO_16 SPI1 SSN EDBG GPIO , USER LED
16 [SPI_MOSI] LP_GPIO_19 SPI1 MOSI EDBG GPIO
17 [SPI_MISO] LP_GPIO_18 SPI1 MISO EDBG GPIO , EXT1
18 [SPI_SCK] LP_GPIO_17 SPI1 SCK EDBG GPIO , EXT1
19 [GND] - - Ground
20 [VCC] - - Power for extension board
Note : * denotes that particular pin is by default connected.
4.1.2 Current Measurement Header
An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of
the SAM B11ZR Xplained Pro. All power to the ATSAMB11ZR is exclusively routed through this header
(excluding power to headers and peripherals). To measure the power consumption of the device, remove
the jumper and replace it with an ammeter.
Caution: Removing the jumper from the pin-header while the kit is powered may cause the
ATSAMB11ZR to be powered through its I/O pins. This may cause permanent damage to the
device.
4.1.3 Cortex Debug Connector
SAM B11ZR Xplained Pro has a 10-pin 50-mil Cortex
®
Debug Connector that can be used to attach
external debuggers to the ATSAMB11ZR.
Table 4-3. Cortex Debug Connector
Cortex Debug
Connector pin Pin / Net Function Shared functionality
1 VCC_TARGET_P3V3 ATSAMB11ZR voltage
2 GPIO_1 SWD data signal EDBG SWD
3 GND Ground
4 GPIO_2 SWD clock signal EDBG SWD
ATSAMB11ZR
©
2017 Microchip Technology Inc.
User Guide
DS70005334A-page 14