Zest_Core_STM32L4A6RG
Overview
The Zest_Core_STM32L4A6RG is an electronics development board for 6TRON opensource platform based on STM32L4A6RG microcontroller from STMicroelectronics.
The STM32L4A6RG is a 32-bit Arm Cortex M4 core running at up to 80 MHz with a single-precision floating point unit. The MCU integrates 320 kB SRAM and 1 MB Flash in a small package (VQFP64). A 32.768 kHz external crystal is also mounted to trim the internal RC oscillator and reach higher accuracy.
The Zest_Core_STM32L4A6RG board features a high density 80-pins interface header integrating configurable standard communication interfaces (at least 1 CAN, 1 SPI, 1 I2C, 5 Analog, 1 UART, 4 PWM, 20 DIO, 1 Reset and 2 Power supply pins). See 80-pin 6TRON header.
Specifications
| MCU Features | ARM 32-bit Cortex-M4 CPU with floating point unit (FPU) 80 MHz max CPU frequency 100 DMIPS and DSP instructions Encryption hardware accelerator: AES (128/256-bit key), HASH (SHA-256) |
|---|---|
| User Interfaces | 1 user LED 1 power LED 1 user push button 1 reset button |
| Connectivity | Micro-USB for UART (through FTDI) Micro-USB device JTAG interface (debug and programming) 80-pin 6TRON headers |
| Board size | 80 x 39 mm |
| Power Supply | Micro-USB JTAG External (VJack) 3-12V |
| Category | Zest_Core |
Block Diagram
The graphics below gives an overview of the board features and connections.
80-pins 6TRON header
This table shows how the pinout on Zest_Core_STM32L4A6RG corresponds to the pinout on the 6TRON BUS connector (the latter shown in the two middle columns).
| Description | 6TRON function | Pin number | Pin number | 6TRON function | Description |
|---|---|---|---|---|---|
| External Power Supply | VJACK | 1 | 2 | VJACK | External Power Supply |
| External Power Supply | VJACK | 3 | 4 | VJACK | External Power Supply |
| - | VHV | 5 | 6 | VHV | - |
| - | VHV | 7 | 8 | VHV | - |
| I/O | DIO8 | 9 | 10 | VIN_EN | Disable 6TRON stack power supply from Core |
| I/O | DIO7 | 11 | 12 | DIO9 | I/O |
| I/O | DIO6 | 13 | 14 | DIO10 | I/O |
| Mother or daughter detect | MD | 15 | 16 | DIO11 | I/O |
| I/O | DIO5 | 17 | 18 | DIO12 | I/O |
| Ground | GND | 19 | 20 | GND | Ground |
| Ground | GND | 21 | 22 | GND | Ground |
| 6TRON Stack Power Supply | VIN | 23 | 24 | VIN | 6TRON Stack Power Supply |
| 6TRON Stack Power Supply | VIN | 25 | 26 | VIN | 6TRON Stack Power Supply |
| Enable 6TRON stack power supply from daughter | VB_EN | 27 | 28 | DIO13 | I/O |
| Power Zest output signal | VB_OUT | 29 | 30 | DIO14 | I/O |
| Analog Output | DAC1 | 31 | 32 | DIO15 | I/O |
| Analog Input | ADC4 | 33 | 34 | DIO16 | I/O |
| Analog Input | ADC3 | 35 | 36 | DIO17 | I/O |
| Analog Input | ADC2 | 37 | 38 | DIO18 | I/O |
| Analog Input | ADC1 | 39 | 40 | GND | Ground |
| Global Reset | EXT_NRST | 41 | 42 | GND | Ground |
| I/O | DIO4 | 43 | 44 | VREF | Reference Voltage |
| I/O | DIO3 | 45 | 46 | DIO19 | I/O |
| I/O | DIO2 | 47 | 48 | DIO20 | I/O |
| I/O | DIO1 | 49 | 50 | DIO21 | - |
| System wake-up | WKUP | 51 | 52 | DIO22 | - |
| Input Capture | ICAPT | 53 | 54 | DIO23 | - |
| PWM Output | PWM3 | 55 | 56 | DIO24 | - |
| PWM Output | PWM2 | 57 | 58 | DIO25 | - |
| PWM Output | PWM1 | 59 | 60 | DIO26 | - |
| SPI Chip select | SPI1_SS | 61 | 62 | DIO27 | - |
| SPI Clock | SPI1_SCK | 63 | 64 | DIO28 | - |
| SPI MISO | SPI1_MISO | 65 | 66 | DIO29 | - |
| SPI MOSI | SPI1_MOSI | 67 | 68 | DIO30 | - |
| UART core to Zest | UART1_TX | 69 | 70 | DIO31 | - |
| UART Zest to core | UART1_RX | 71 | 72 | DIO32 | - |
| I2C Data | I2C1_SDA | 73 | 74 | DIO33 | - |
| I2C Clock | I2C1_SCL | 75 | 76 | DIO34 | - |
| CAN core to driver | CAN1_TX | 77 | 78 | DIO35 | - |
| CAN driver to core | CAN1_RX | 79 | 80 | DIO36 | - |
Software Support
Thanks to the Mbed API, any program developed for this specific reference can be easily compiled for the same MCU in another package or even another ARM Cortex-M core during the integration phase of the project.
Ressources
Application notes
- Powering 6TRON board