MAX78000FTHR

Overview

The MAX78000FTHR is a rapid development platform to help engineers quickly implement ultra low-power, artificial intelligence (AI) solutions using the MAX78000 Arm® Cortex®-M4F processor with an integrated Convolutional Neural Network accelerator. The board also includes the MAX20303 PMIC for battery and power management. The form factor is 0.9in x 2.6in dual-row header footprint that is compatible with Adafruit Feather Wing peripheral expansion boards. The board includes a variety of peripherals, such as a CMOS VGA image sensor, digital microphone, low-power stereo audio CODEC, 1MB QSPI SRAM, micro SD card connector, RGB indicator LED, and pushbutton. The MAX78000FTHR provides a poweroptimized flexible platform for quick proof-of-concepts and early software development to enhance time to market.

The Zephyr port is running on the MAX78000 MCU.

Hardware

MAX78000 MCU:
- Dual-Core, Low-Power Microcontroller
  - Arm Cortex-M4 Processor with FPU up to 100MHz
  - 512KB Flash and 128KB SRAM
  - Optimized Performance with 16KB Instruction Cache
  - Optional Error Correction Code (ECC-SEC-DED) for SRAM
  - 32-Bit RISC-V Coprocessor up to 60MHz
  - Up to 52 General-Purpose I/O Pins
  - 12-Bit Parallel Camera Interface
  - One I2S Master/Slave for Digital Audio Interface
- Neural Network Accelerator
  - Highly Optimized for Deep Convolutional Neural Networks
  - 442k 8-Bit Weight Capacity with 1,2,4,8-Bit Weights
  - Programmable Input Image Size up to 1024 x 1024 pixels
  - Programmable Network Depth up to 64 Layers
  - Programmable per Layer Network Channel Widths up to 1024 Channels
  - 1 and 2 Dimensional Convolution Processing
  - Streaming Mode
  - Flexibility to Support Other Network Types, Including MLP and Recurrent Neural Networks
- Power Management Maximizes Operating Time for Battery Applications
  - Integrated Single-Inductor Multiple-Output (SIMO) Switch-Mode Power Supply (SMPS)
  - 2.0V to 3.6V SIMO Supply Voltage Range
  - Dynamic Voltage Scaling Minimizes Active Core Power Consumption
  - 22.2μA/MHz While Loop Execution at 3.0V from Cache (CM4 Only)
  - Selectable SRAM Retention in Low-Power Modes with Real-Time Clock (RTC) Enabled
- Security and Integrity
  - Available Secure Boot
  - AES 128/192/256 Hardware Acceleration Engine
  - True Random Number Generator (TRNG) Seed Generator

Supported Features

The max78000fthr 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.

max78000fthr

/

max78000/m4

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	`arm,cortex-m4f`
ADC	on-chip	ADI MAX32 ADC 10-Bits1	`adi,max32-adc-10b`
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`
DMA	on-chip	ADI MAX32 DMA1	`adi,max32-dma`
Flash controller	on-chip	MAX32XXX flash controller1	`adi,max32-flash-controller`
GPIO & Headers	on-chip	MAX32 GPIO4	`adi,max32-gpio`
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 node1	`soc-nv-flash`
Pin control	on-chip	MAX32 Pin Controller1	`adi,max32-pinctrl`
PWM	on-chip	ADI MAX32 PWM6	`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 1	`adi,max32-spi`
SRAM	on-chip	Generic on-chip SRAM description4	`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 watchdog1 1	`adi,max32-watchdog`

Connections and IOs

J8 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	P2_3	GPIO or Analog Input (AIN3 channel).
6	P2_4	GPIO or Analog Input (AIN4 channel).
7	P1_1	GPIO or UART2 Tx signal
8	P1_0	GPIO or UART2 Rx signal
9	MPC1	GPIO controlled by PMIC through I2C interface. Open drain or push-pull programmable
10	MPC2	GPIO controlled by PMIC through I2C interface. Open drain or push-pull programmable
11	P0_7	GPIO or QSPI0 clock signal. Shared with SD card and on-board QSPI SRAM
12	P0_5	GPIO or QSPI0 MOSI signal. Shared with SD card and on-board QSPI SRAM
13	P0_6	GPIO or QSPI0 MISO signal. Shared with SD card and on-board QSPI SRAM
14	P2_6	GPIO or LPUART Rx signal
15	P2_7	GPIO or LPUART Tx signal
16	GND	Ground

J4 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	Turns off the PMIC if shorted to Ground for 13 seconds. Hard power-down button.
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	P1_6	GPIO
5	MPC3	GPIO controlled by PMIC through the I2C interface. Open drain or push-pull programmable.
6	P0_9	GPIO or QSPI0 SDIO3 signal. Shared with SD card and on-board QSPI SRAM.
7	P0_8	GPIO or QSPI0 SDIO2 signal. Shared with SD Card and on-board QSPI SRAM.
8	P0_11	GPIO or QSPI0 slave select signal
9	P0_19	GPIO
10	P3_1	GPIO or Wake-up signal. This pin is 3.3V only.
11	P0_16	GPIO or I2C1 SCL signal. An on-board level shifter allows selecting 1.8V or 3.3V operation through R15 or R20 resistors. Do not populate both.
12	P0_17	GPIO or I2C1 SDA signal. An on-board level shifter allows selecting 1.8V or 3.3V operation through R15 or R20 resistors. Do not populate both.

Programming and Debugging

Flashing

The MAX32625 microcontroller on the board is preprogrammed with DAPLink firmware. It allows debugging and programming of the MAX78000 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.

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 (JH5) using an appropriate adapter board and cable.

Debugging

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

References

MAX78000FTHR web page