标准版

基于STM32G474的电源主控板设计

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简介：本设计是采用意法半导体专用电源处理器STM32G474CET6,利用hrtim产生超高精度PWM,在电子设计大赛电源题有很好的应用

开源协议

：

GPL 3.0

创建时间：2020-10-25 05:59:15更新时间：2021-12-12 08:27:55

描述

The STM32G474xB/xC/xE devices are based on the high-performance Arm® Cortex®-M4 32-bit RISC core. They operate at a frequency of up to 170 MHz.

The Cortex-M4 core features a single-precision floating-point unit (FPU), which supports all the Arm single-precision data-processing instructions and all the data types. It also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) which enhances the application’s security.
These devices embed high-speed memories (512 Kbytes of Flash memory, and 128 Kbytes of SRAM), a flexible external memory controller (FSMC) for static memories (for devices with packages of 100 pins and more), a Quad SPI Flash memory interface, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
The devices also embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, securable memory area and proprietary code readout protection.
The devices embed peripherals allowing mathematical/arithmetic function acceleration (CORDIC for trigonometric functions and FMAC unit for filter functions).
They offer five fast 12-bit ADCs (5 Msps), seven comparators, six operational amplifiers, seven DAC channels (3 external and 4 internal), an internal voltage reference buffer, a low-power RTC, two general-purpose 32-bit timers, three 16-bit PWM timers dedicated to motor control, seven general-purpose 16-bit timers, and one 16-bit low-power timer, and high resolution timer with 184 ps resolution.
They also feature standard and advanced communication interfaces such as:

interfaces such as:

主要特性

Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory, frequency up to 170 MHz with 213 DMIPS, MPU, DSP instructions
Operating conditions:
- VDD, VDDA voltage range: 1.71 V to 3.6 V
Mathematical hardware accelerators
- CORDIC for trigonometric functions acceleration
- FMAC: filter mathematical accelerator
Memories
- 512 Kbytes of Flash memory with ECC support, two banks read-while-write, proprietary code readout protection (PCROP), securable memory area, 1 Kbyte OTP
- 96 Kbytes of SRAM, with hardware parity check implemented on the first 32 Kbytes
- Routine booster: 32 Kbytes of SRAM on instruction and data bus, with hardware parity check (CCM SRAM)
- External memory interface for static memories FSMC supporting SRAM, PSRAM, NOR and NAND memories
- Quad-SPI memory interface
Reset and supply management
- Power-on/power-down reset (POR/PDR/BOR)
- Programmable voltage detector (PVD)
- Low-power modes: sleep, stop, standby and shutdown
- VBAT supply for RTC and backup registers
Clock management
- 4 to 48 MHz crystal oscillator
- 32 kHz oscillator with calibration
- Internal 16 MHz RC with PLL option (± 1%)
- Internal 32 kHz RC oscillator (± 5%)
Up to 107 fast I/Os
- All mappable on external interrupt vectors
- Several I/Os with 5 V tolerant capability
Interconnect matrix
16-channel DMA controller
5 x 12-bit ADCs 0.25 µs, up to 42 channels. Resolution up to 16-bit with hardware oversampling, 0 to 3.6 V conversion range

7 x 12-bit DAC channels
- 3 x buffered external channels 1 MSPS
- 4 x unbuffered internal channels 15 MSPS
7 x ultra-fast rail-to-rail analog comparators
6 x operational amplifiers that can be used in PGA mode, all terminals accessible
Internal voltage reference buffer (VREFBUF) supporting three output voltages (2.048 V, 2.5 V, 2.95 V)
17 timers:
- HRTIM (Hi-Resolution and complex waveform builder): 6 x16-bit counters, 184 ps resolution, 12 PWM
- 2 x 32-bit timer and 2 x 16-bit timers with up to four IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
- 3 x 16-bit 8-channel advanced motor control timers, with up to 8 x PWM channels, dead time generation and emergency stop
- 1 x 16-bit timer with 2 x IC/OCs, one OCN/PWM, dead time generation and emergency stop
- 2 x 16-bit timers with IC/OC/OCN/PWM, dead time generation and emergency stop
- 2 x watchdog timers (independent, window)
- 1 x SysTick timer: 24-bit downcounter
- 2 x 16-bit basic timers
- 1 x low-power timer
Calendar RTC with alarm, periodic wakeup from stop/standby
Communication interfaces
- 3 x FDCAN controller supporting flexible data rate
- 4 x I2C Fast mode plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, wakeup from stop
- 5 x USART/UARTs (ISO 7816 interface, LIN, IrDA, modem control)
- 1 x LPUART
- 4 x SPIs, 4 to 16 programmable bit frames, 2 x with multiplexed half duplex I2S interface
- 1 x SAI (serial audio interface)
- USB 2.0 full-speed interface with LPM and BCD support
- IRTIM (infrared interface)
- USB Type-C™ /USB power delivery controller (UCPD)
True random number generator (RNG)
CRC calculation unit, 96-bit unique ID
Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™