PVDX SAMD51-A Pin Config

This repo serves as the official source of truth for the PVDX mission's pin configuration.

Note

Any edits to the .atzip file at this project's root must be commuted to the README. Commits must be clearly labeled with which pins were changed and for what purpose.

Note

BEFORE YOU COMMIT, CHECK:

1. Does my PVDXosV2 compile with this ASF config?
2. Make sure there's only one .atzip file in the repo, delete the old one (it will be in version control)
3. Have I updated the README?

Compute Board — SAMD51P20A Pin Mapping Reference

MCU: Microchip SAMD51P20A-AF (128-pin TQFP)

SERCOM Peripheral Assignments

SERCOM0 — SPI_MRAM

Function	Pin	Direction
MOSI	PB24	Output
SCK	PB25	Output
MISO	PC18	Input

Directly-connected chip selects, resets, and write-protect lines:

Signal	Pin	Direction	Initial Level
MRAM1_CS	PC04	Output	High
MRAM1_RST	PC05	Output	High
MRAM1_WP	PB12	Output	High
MRAM2_CS	PC06	Output	High
MRAM2_RST	PC07	Output	High
MRAM2_WP	PB13	Output	High
MRAM3_CS	PB10	Output	High
MRAM3_RST	PB11	Output	High
MRAM3_WP	PB15	Output	High

SERCOM1 — SPI_DISPLAY

Function	Pin	Direction
MOSI	PA00	Output
SCK	PA01	Output
MISO	PA18	Input

Signal	Pin	Direction	Initial Level
DISPLAY_CS	PC11	Output	High
DISPLAY_RST	PD11	Output	High
DISPLAY_DC	PD12	Output	High

SERCOM2 — SPI_CAMERA

Function	Pin	Direction
MOSI	PB26	Output
SCK	PB27	Output
MISO	PA14	Input

Signal	Pin	Direction	Initial Level
CAMERA_CS	PC14	Output	High

SERCOM3 — I2C_SBAND

Function	Pin	Direction
SCL	PA16	I2C
SDA	PA17	I2C

SERCOM4 — SPI_MAGNETOMETER_GYRO

Function	Pin	Direction
MOSI	PA13	Output
SCK	PA12	Output
MISO	PB14	Input

Signal	Pin	Direction	Initial Level
MAGNETOMETER_CS	PC19	Output	High
MAGNETOMETER_DRDY	PC10	Input	High
GYRO_CS	PC20	Output	High
GYRO_RST	PC21	Output	High
GYRO_DRDY	PC22	Input	—

SERCOM5 — SPI_SBAND

Function	Pin	Direction
MOSI	PB16	Output
SCK	PB17	Output
MISO	PB18	Input

Signal	Pin	Direction	Initial Level
SBAND_CS	PB19	Output	High

SERCOM6 — I2C_CAMERA

Function	Pin	Direction
SCL	PD08	I2C
SDA	PD09	I2C

SERCOM7 — SPI_UHF

Function	Pin	Direction
MOSI	PC12	Output
SCK	PC13	Output
MISO	PD10	Input

Signal	Pin	Direction	Initial Level
UHF_CS	PC16	Output	High
UHF_RST	PC17	Output	High

---

ADC Channels

ADC0

Channel	Pin
AIN0	PA02
AIN1	PA03
AIN2	PB08
AIN3	PB09
AIN4	PA04
AIN5	PA05
AIN6	PA06
AIN7	PA07
AIN8	PA08
AIN9	PA09
AIN10	PA10
AIN11	PA11
AIN12	PB00
AIN13	PB01
AIN14	PB02
AIN15	PB03

ADC1

Channel	Pin
AIN4	PC02
AIN5	PC03
AIN6	PB04
AIN7	PB05
AIN8	PB06
AIN9	PB07
AIN10	PC00
AIN11	PC01
AIN12	PC30
AIN13	PC31
AIN14	PD00
AIN15	PD01

---

LEDs

Signal	Pin	Direction	Initial Level
LED_RED	PA19	Output	High
LED_ORANGE1	PC15	Output	High
LED_ORANGE2	PA15	Output	High

---

Magnetorquer (PWM)

MAGNETORQUER_XY — TCC0 (X and Y axes)

Signal	Pin	Direction
MTQ_X_IN1	PA20	Output
MTQ_X_IN2	PA21	Output
MTQ_Y_IN1	PA22	Output
MTQ_Y_IN2	PA23	Output

MAGNETORQUER_Z — TCC1 (Z axis)

Signal	Pin	Direction
MTQ_Z_IN1	PD20	Output
MTQ_Z_IN2	PD21	Output

---

Debug (SWD)

Function	Pin
SWCLK	PA30
SWDIO	PA31

These are dedicated SWD pins on the SAMD51 and are not configured through Atmel START.

---

System Peripherals

Driver	Hardware Block	Notes
TIMER_0	RTC	FreeRTOS tick source
DELAY_0	SysTick	Blocking delay driver
RAND_0	TRNG	Hardware RNG
WDT_0	WDT	Watchdog timer
CMCC	CMCC	Cortex cache controller
DMAC	DMAC	DMA controller

---

Unmapped Pins

The following SAMD51P20A pins have no assignment in the Atmel START configuration.

Port A

Pin	Notes
PA24	Unallocated
PA25	Unallocated
PA27	Unallocated

Port B

Pin	Notes
PB20	Unallocated
PB21	Unallocated
PB22	Unallocated
PB23	Unallocated
PB28	Unallocated
PB29	Unallocated
PB30	Unallocated
PB31	Unallocated

Port C

Pin	Notes
PC23	Unallocated
PC24	Unallocated
PC25	Unallocated
PC26	Unallocated
PC27	Unallocated
PC28	Unallocated