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
SBAND_EN	PC25	Output	Low
SBAND_RST	PC26	Output	Low

SERCOM6 — I2C_FUELGAUGE_PEROVSKITE

Function	Pin	Direction
SCL	PD08	I2C
SDA	PD09	I2C

Signal	Pin	Direction
PVD_CRNT	PA02	DAC

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
UHF_IRQ	PA27	Input	-

---

Photodiodes

Signal	Pin
PHD_0	PC00
PHD_1	PA03
PHD_2	PB08
PHD_3	PB09
PHD_4	PA04
PHD_5	PA05
PHD_6	PA06
PHD_7	PA07
PHD_8	PA08
PHD_9	PA09
PHD_10	PA10
PHD_11	PA11
PHD_12	PB00
PHD_13	PB01
PHD_14	PB02
PHD_15	PB03
PHD_16	PC02
PHD_17	PC03

---

Thermistors

Signal	Pin
THERM_0	PB04
THERM_1	PB05
THERM_2	PB06
THERM_3	PB07

---

Burn Wire

Signal	Pin
BURN	PB29

---

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_X_SLP	PB30	Output
MTQ_Y_IN1	PA22	Output
MTQ_Y_IN2	PA23	Output
MTQ_Y_SLP	PB31	Output

MAGNETORQUER_Z — TCC1 (Z axis)

Signal	Pin	Direction
MTQ_Z_IN1	PD20	Output
MTQ_Z_IN2	PD21	Output
MTQ_Z_SLP	PC27	Output

---

EPS

Fuel Gauge I2C Multiplexer (TCA9546A)

Signal	Pin	Direction
EPS_RST	PB20	Output
EPS_A0	PB21	Output
EPS_A1	PB22	Output
EPS_A2	PB23	Output

Fuel Gauge Interrupt

Signal	Pin	Direction
EPS_IRQ	PB28	Input

Heaters

Signal	Pin	Direction
HEATER_CTRL_1	PC23	Output
HEATER_CTRL_2	PC24	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

Port C

Pin	Notes
PC28	Unallocated

ADC1

Channel	Pin	Notes
AIN11	PC01	Unallocated
AIN12	PC30	Unallocated
AIN13	PC31	Unallocated
AIN14	PD00	Unallocated
AIN15	PD01	Unallocated