MAX32690FTHR

Overview

The MAX32690FTHR is a rapid development platform to help engineers quickly implement ultra low-power wireless solutions using MAX32690 Arm© Cortex®-M4F and Bluetooth® 5.2 Low Energy (LE). The board also includes the MAX77654 PMIC for battery and power management. The form factor is a small 0.9in x 2.6in dual-row header footprint that is compatible with Adafruit Feather Wing peripheral expansion boards.

Hardware

MAX32690 MCU:
- Ultra-Efficient Microcontroller for Battery-Powered Applications
  - 120MHz Arm Cortex-M4 Processor with FPU
  - 7.3728MHz and 60MHz Low-Power Oscillators
  - External Crystal Support (32MHz required for BLE)
  - 32.768kHz RTC Clock (Requires External Crystal)
  - 8kHz Always-On Ultra-Low Power Oscillator
  - 3MB Internal Flash, 1MB Internal SRAM (832kB ECC ON)
  - 85 μW/MHz ACTIVE mode at 1.1V
  - 1.8V and 3.3V I/O with No Level Translators
  - External Flash & SRAM Expansion Interfaces
- Bluetooth 5.2 LE Radio
  - Dedicated, Ultra-Low-Power, 32-Bit RISC-V Coprocessor to Offload Timing-Critical Bluetooth Processing
  - Fully Open-Source Bluetooth 5.2 Stack Available
  - Supports AoA, AoD, LE Audio, and Mesh
  - High-Throughput (2Mbps) Mode
  - Long-Range (125kbps and 500kbps) Modes
  - Rx Sensitivity: -97.5dBm; Tx Power: +4.5dBm
  - Single-Ended Antenna Connection (50Ω)
- Multiple Peripherals for System Control
  - 16-Channel DMA
  - Up To Five Quad SPI Master (60MHz)/Slave (48MHz)
  - Up To Four 1Mbaud UARTs with Flow Control
  - Up To Two 1MHz I2C Master/Slave
  - I2S Master/Slave
  - Eight External Channel, 12-bit 1MSPS SAR ADC w/ on-die temperature sensor
  - USB 2.0 Hi-Speed Device
  - 16 Pulse Train Engines
  - Up To Six 32-Bit Timers with 8mA High Drive
  - Up To Two CAN 2.0 Controllers
  - Up To Four Micro-Power Comparators
  - 1-Wire Master
- Security and Integrity
  - ChipDNA Physically Un-clonable Function (PUF)
  - Modular Arithmetic Accelerator (MAA), True Random Number Generator (TRNG)
  - Secure Nonvolatile Key Storage, SHA-256, AES-128/192/256
  - Secure Boot ROM

Supported Features

The max32690fthr 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.

`max32690fthr/max32690/m4` 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 provider1 5	`fixed-clock`
Counter	on-chip	ADI MAX32 counter6	`adi,max32-counter`
Counter	on-chip	ADI MAX32 compatible Counter RTC1	`adi,max32-rtc-counter`
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 GPIO4 1	`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 UART2 2	`adi,max32-uart`
SPI	on-chip	ADI MAX32 SPI1 4	`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`
1-Wire	on-chip	ADI MAX32xxx MCUs 1-Wire Master1	`adi,max32-w1`
Watchdog	on-chip	MAX32XXX watchdog2	`adi,max32-watchdog`

Programming and Debugging

Flashing

The MAX32690 MCU can be flashed by connecting an external debug probe to the SWD port. SWD debug can be accessed through the Cortex 10-pin connector, J4. Logic levels are fixed to VDDIO (1.8V).

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

# From the root of the zephyr repository
west build -b max32690fthr/max32690/m4 samples/hello_world
west flash

Note

This board uses OpenOCD as the default debug interface. You can also use a Segger J-Link with Segger’s native tooling by overriding the runner, appending --runner jlink to your west command(s). The J-Link should be connected to the standard 2*5 pin debug connector (J4) using an appropriate adapter board and cable.

Debugging

Once the debug probe is connected to your host computer, then you can run the west debug command to write a firmware image into flash and start a debug session. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b max32690fthr/max32690/m4 samples/hello_world
west debug

References

MAX32690 solution center