STM32F407ZGT6 datasheet: ARM Cortex-M4 MCU with 1MB Flash & 192KB RAM

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STM32F407ZGT6是一款基于ARM Cortex-M4内核的高性能嵌入式微控制器，它集成了浮点处理器单元(FPU)、适应性实时加速器(ART Accelerator)以及丰富的外设接口。这款微控制器的核心特性包括： 1. **强大的处理能力**：Cortex-M4内核支持0-wait-state执行，最高工作频率可达168MHz，提供了210 DMIPS的计算性能，同时具备1.25 DMIPS/MHz的Dhrystone 2.1基准测试效率，以及内置的数字信号处理器(DSP)指令集，适合需要高效处理任务的应用。 2. **内存配置**：STM32F407ZGT6具有高达1 MB的闪存存储空间，能满足大容量程序存储的需求。内存配置还包括最多192 KB的数据RAM和64 KB的片上内核耦合内存(CCM)，支持多种类型的扩展内存，如SRAM、PSRAM、NOR和NAND，提供了灵活的存储选项。 3. **外设接口**：设备集成了多个功能强大的接口，包括USB OTG HS/FS接口，便于高速数据传输；以太网接口，支持网络连接；17个定时器，用于精确的时间管理；3个ADC，支持模拟信号数字化；以及15个通信接口，满足多样化的通讯需求，甚至可能包含相机接口。 4. **电源管理**：该微控制器支持宽电压范围，从1.8 V到3.6 V，适应不同应用场景。它还具备电源中断(POR)、掉电检测(PDR)、电压检测(PVD)和 brown-out reset (BOR)保护机制，确保系统在各种供电条件下的稳定性。内部时钟选项包括16 MHz工厂校准的晶振和用于RTC（实时时钟）的32 kHz时钟，以及用于低功耗模式的睡眠、停止和待机状态。 5. **显示接口**：配备LCD并支持8080/6800模式，方便与外部显示器进行连接。 STM32F407ZGT6凭借其强大的处理性能、丰富的内存选项和多样化的外设接口，是工业控制、物联网(IoT)、消费电子和自动化设备等领域广泛应用的理想选择，尤其适用于对性能和低功耗要求较高的项目。

Description STM32F405xx, STM32F407xx

16/202 DocID022152 Rev 8

2.1 Full compatibility throughout the family

The STM32F405xx and STM32F407xx are part of the STM32F4 family. They are fully pin-

to-pin, software and feature compatible with the STM32F2xx devices, allowing the user to

try different memory densities, peripherals, and performances (FPU, higher frequency) for a

greater degree of freedom during the development cycle.

The STM32F405xx and STM32F407xx devices maintain a close compatibility with the

whole STM32F10xxx family. All functional pins are pin-to-pin compatible. The

STM32F405xx and STM32F407xx, however, are not drop-in replacements for the

STM32F10xxx devices: the two families do not have the same power scheme, and so their

power pins are different. Nonetheless, transition from the STM32F10xxx to the

STM32F40xxx family remains simple as only a few pins are impacted.

Figure 4, Figure 3, Figure 2, and Figure 1 give compatible board designs between the

STM32F40xxx, STM32F2, and STM32F10xxx families.

Figure 1. Compatible board design between STM32F10xx/STM32F40xxx for LQFP64

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DocID022152 Rev 8 19/202

STM32F405xx, STM32F407xx Description

2.2 Device overview

Figure 5. STM32F40xxx block diagram

1. The camera interface and ethernet are available only on STM32F407xx devices.

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Description STM32F405xx, STM32F407xx

20/202 DocID022152 Rev 8

2.2.1 ARM

Cortex

-M4 core with FPU and embedded Flash and SRAM

The ARM Cortex-M4 processor with FPU is the latest generation of ARM processors for

embedded systems. It was developed to provide a low-cost platform that meets the needs of

MCU implementation, with a reduced pin count and low-power consumption, while

delivering outstanding computational performance and an advanced response to interrupts.

The ARM Cortex-M4 32-bit RISC processor with FPU features exceptional code-efficiency,

delivering the high-performance expected from an ARM core in the memory size usually

associated with 8- and 16-bit devices.

The processor supports a set of DSP instructions which allow efficient signal processing and

complex algorithm execution.

Its single precision FPU (floating point unit) speeds up software development by using

metalanguage development tools, while avoiding saturation.

The STM32F405xx and STM32F407xx family is compatible with all ARM tools and software.

Figure 5 shows the general block diagram of the STM32F40xxx family.

Note: Cortex-M4 with FPU is binary compatible with Cortex-M3.

2.2.2 Adaptive real-time memory accelerator (ART Accelerator™)

The ART Accelerator™ is a memory accelerator which is optimized for STM32 industry-

standard ARM

Cortex

-M4 with FPU processors. It balances the inherent performance

advantage of the ARM Cortex-M4 with FPU over Flash memory technologies, which

normally requires the processor to wait for the Flash memory at higher frequencies.

To release the processor full 210 DMIPS performance at this frequency, the accelerator

implements an instruction prefetch queue and branch cache, which increases program

execution speed from the 128-bit Flash memory. Based on CoreMark benchmark, the

performance achieved thanks to the ART accelerator is equivalent to 0 wait state program

execution from Flash memory at a CPU frequency up to 168 MHz.

2.2.3 Memory protection unit

The memory protection unit (MPU) is used to manage the CPU accesses to memory to

prevent one task to accidentally corrupt the memory or resources used by any other active

task. This memory area is organized into up to 8 protected areas that can in turn be divided

up into 8 subareas. The protection area sizes are between 32 bytes and the whole 4

gigabytes of addressable memory.

The MPU is especially helpful for applications where some critical or certified code has to be

protected against the misbehavior of other tasks. It is usually managed by an RTOS (real-

time operating system). If a program accesses a memory location that is prohibited by the

MPU, the RTOS can detect it and take action. In an RTOS environment, the kernel can

dynamically update the MPU area setting, based on the process to be executed.

The MPU is optional and can be bypassed for applications that do not need it.

2.2.4 Embedded Flash memory

The STM32F40xxx devices embed a Flash memory of 512 Kbytes or 1 Mbytes available for

storing programs and data.

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