MAX32672FTHR

Overview

The MAX32672FTHR is a rapid development platform that helps engineers quickly implement complex sensor solutions using the MAX32672 Arm® Cortex®-M4. The board also includes the MAX8819 PMIC for battery and power management. The form factor is a small, 0.9in by 2.6in, dual row header footprint that is compatible with Adafruit® FeatherWing peripheral expansion boards. The board includes an OLED display, a RGB indicator LED, and a user pushbutton. The MAX32672FTHR provides a power-optimized flexible platform for quick proof-ofconcepts and early software development to enhance time to market.

The Zephyr port is running on the MAX32672 MCU.

Hardware

MAX32672 MCU:
- High-Efficiency Microcontroller for Low-Power High-Reliability Devices
  - Arm Cortex-M4 Processor with FPU up to 100MHz
  - 1MB Dual-Bank Flash with Error Correction
  - 200KB SRAM (160KB with ECC Enabled), Optionally Preserved in Lowest Power Modes
  - EEPROM Emulation on Flash
  - 16KB Unified Cache with ECC
  - Resource Protection Unit (RPU) and MemoryProtection Unit (MPU)
  - Dual- or Single-Supply Operation, 1.7V to 3.6V
  - Wide Operating Temperature: -40°C to +105°C
- Flexible Clocking Schemes
  - Internal High-Speed 100MHz Oscillator
  - Internal Low-Power 7.3728MHz and Ultra-Low-Power 80kHz Oscillators
  - 16MHz–32MHz Oscillator, 32.768kHz Oscillator(External Crystal Required)
  - External Clock Input for CPU, LPUART, LPTMR
- Power Management Maximizes Uptime for Battery Applications
  - 59.8μA/MHz ACTIVE at 0.9V up to 12MHz(CoreMark®)
  - 56.6μA/MHz ACTIVE at 1.1V up to 100MHz(While(1))
  - 3.09μA Full Memory Retention Power in BACKUPMode at VDD = 1.8V
  - 350nA Ultra-Low-Power RTC at
  - Wake from LPUART or LPTMR
- Optimal Peripheral Mix Provides Platform Scalability
  - Up to 42 General-Purpose I/O Pins
  - Up to Three SPI Master/Slave (up to 50Mbps)
  - Up to Three 4-Wire UART
  - Up to Three I2C Master/Slave 3.4Mbps High Speed
  - Up to Four 32-Bit Timers (TMR)
  - Up to Two Low-Power 32-Bit Timers (LPTMR)
  - One I2S Master/Slave for Digital Audio Interface
  - 12-Channel, 12-Bit, 1Msps SAR ADC with On-DieTemperature Sensor
- Security and Integrity
  - Optional ECDSA-Based Cryptographic SecureBootloader in ROM
  - Secure Cryptographic Accelerator for Elliptic Curve
  - AES-128/192/256 Hardware Acceleration Engine
Benefits and Features of MAX32672FTHR:
- MAX8819 PMIC with Integrated Charger
- On-Board DAPLink Debug and Programming Interface for Arm Cortex-M4
- Breadboard-Compatible Headers
- Micro USB Connector
- RGB Indicator LED
- User Pushbutton
- OLED Display
- SWD Debugger
- Virtual UART Console

Supported Features

The max32672fthr board supports the hardware features listed below.

on-chip / on-board: Feature integrated in the SoC / present on the board.
2 / 2: Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo: Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

`max32672fthr/max32672` target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	`arm,cortex-m4f`
ADC	on-chip	ADI MAX32 ADC SAR1	`adi,max32-adc-sar`
Clock control	on-chip	MAX32 Global Control1	`adi,max32-gcr`
Clock control	on-chip	Generic fixed-rate clock provider2 3	`fixed-clock`
Counter	on-chip	ADI MAX32 counter6	`adi,max32-counter`
Counter	on-chip	ADI MAX32 compatible Counter RTC1	`adi,max32-rtc-counter`
Display	on-board	SSD1306 128x64 dot-matrix display controller on I2C bus1	`solomon,ssd1306fb`
DMA	on-chip	ADI MAX32 DMA1	`adi,max32-dma`
Flash controller	on-chip	MAX32XXX flash controller2	`adi,max32-flash-controller`
GPIO & Headers	on-chip	MAX32 GPIO2	`adi,max32-gpio`
GPIO & Headers	on-board	GPIO pins exposed on Adafruit Feather headers1	`adafruit-feather-header`
I2C	on-chip	ADI MAX32 I2C1 2	`adi,max32-i2c`
Input	on-board	Group of GPIO-bound input keys1	`gpio-keys`
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	`arm,v7m-nvic`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
MTD	on-chip	Flash node2	`soc-nv-flash`
Pin control	on-chip	MAX32 Pin Controller1	`adi,max32-pinctrl`
PWM	on-chip	ADI MAX32 PWM4	`adi,max32-pwm`
RNG	on-chip	ADI MAX32XXX TRNG1	`adi,max32-trng`
Serial controller	on-chip	MAX32 UART1 3	`adi,max32-uart`
SPI	on-chip	ADI MAX32 SPI1 2	`adi,max32-spi`
SRAM	on-chip	Generic on-chip SRAM description8	`mmio-sram`
Timer	on-chip	ARMv7-M System Tick1	`arm,armv7m-systick`
Timer	on-chip	ADI MAX32 timer6	`adi,max32-timer`
Watchdog	on-chip	MAX32XXX watchdog1 1	`adi,max32-watchdog`

Connections and IOs

J9 Pinout

Pin	Name	Description
1	RST	Master Reset Signal
2	3V3	3.3V Output. Typically used to provide 3.3V to peripherals connected to the expansion headers.
3	1V8	1.8V Output. Typically used to provide 1.8V to peripherals connected to the expansion headers.
4	GND	Ground
5	P0_11	GPIO or Analog Input (AIN3 channel).
6	P0_12	GPIO or Analog Input (AIN4 channel).
7	P0_13	GPIO or Analog Input (AIN5 channel).
8	P0_22	GPIO or ADC_TRIG signal.
9	P0_27	GPIO or QERR signal.
10	P0_26	GPIO or QDIR signal.
11	P0_16	GPIO or SPI1 clock signal.
12	P0_15	GPIO or SPI1 MOSI signal.
13	P0_14	GPIO or SPI1 MISO signal.
14	P0_28	GPIO or UART1 Rx signal.
15	P0_29	GPIO or UART1 Tx signal.
16	GND	Ground

J7 Pinout

Pin	Name	Description
1	SYS	SYS Switched Connection to the Battery. This is the primary system power supply and automatically switches between the battery voltage and the USB supply when available.
2	PWR	In battery-powered mode, turns off the PMIC if shorted to ground.
3	VBUS	USB VBUS Signal. This can be used as a 5V supply when connected to USB. This pin can also be used as an input to power the board.
4	P0_5	GPIO or HFX_CLK_OUT signal.
5	P0_6	GPIO or QEA signal.
6	P0_7	GPIO or QEB signal.
7	P0_23	GPIO or QEI signal.
8	P0_17	GPIO or SPI1 slave select signal.
9	P0_24	GPIO or QES signal.
10	P0_25	GPIO or QMATCH signal.
11	P0_18	GPIO or I2C2 SCL signal.
12	P0_19	GPIO or I2C2 SDA signal.

Programming and Debugging

Flashing

The MAX32625 microcontroller on the board is flashed with DAPLink firmware at the factory. It allows debugging and flashing the MAX32672 Arm Core over USB.

Once the debug probe is connected to your host computer, then you can simply run the west flash command to write a firmware image into flash. To perform a full erase, pass the --erase option when executing west flash.

Debugging

Please refer to the Flashing section and run the west debug command instead of west flash.

References

MAX32672FTHR web page