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

Below interfaces are supported by Zephyr on MAX32690FTHR.

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

CLOCK

on-chip

clock and reset control

GPIO

on-chip

gpio

UART

on-chip

serial

I2C

on-chip

i2c

SPI

on-chip

spi

Flash

on-chip

flash

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.

# 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