Laird RM126 Series, Руководство пользователя

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Twenty breakout pads are provided and allow connection of external peripherals. There are 10 pads on the left side of the
board, and 10 pads on the right. The breakout pads contain a number of I/O pins that can be used with most of the RM126x
features. Additionally, the VMCU1 (main board power rail), 3V3 (LDO regulator output), and 5V power rails are also
exposed on the pads.
The pin-routing on the RM126x is very flexible, so most peripherals can be routed to any pin. However, pins may be shared
between the breakout pads and other functions on the RM126x Development Kit. The table below includes an overview of the
breakout pads and functionality that is shared with the kit.
Table 3: RM126x DVK Breakout Pads Pinout
Pin Connection Shared Feature
(Top View) Left Side Breakout Pins (J1)
1 PC06 BUTTON0
2 PA03 DBG_SWO, SI_SWO
3 GND Ground
4 5V Board USB voltage
5 PB03 SI_UART_RX
6 PB02 SI_UART_RTS
7 PC07 SI_UART_TX
8 PB04 SI_UART_CTS
9 PC05 LED0(via SB4), MikroBUS INT
10 PC04 MikroBUS PWM
(Top View) Right Side Breakout Pins (J2)
1 RST RM126x reset, active low
2 NC
3 GND Ground
4 VMCU1 RM126x voltage domain
5 PD03 MikroBUS SPI_MOSI default via closed SB11
Optional (cut SB11 first):
MikroBUS I2C_SDA (via shorting SB9),
Qwiic I2C_SDA (via shorting SB10),
MikroBUS UART_TX (via shorting SB12)
6 PD02 MikroBUS SPI_MISO default via closed SB7
Optional (cut SB7 first):
MikroBUS I2C_SCL (via shorting SB5),
Qwiic I2C_SCL (via shorting SB6),
MikroBUS UART_RX (via shorting SB8)
7 PC00 MikroBUS SPI_SCK
8 PC01 MikroBUS SPI_CS
9 PC03 MikroBUS RST
10 PC02 MikroBUS Analog