Stm32 flash sector size.
May 27, 2021 · STM32 Projects.
Stm32 flash sector size. 32 Kbyte block erase 4. For me, it will be possible to use this IAP code in different versions of STM32 chips. From the reference manual (DM00031936), section 3. 64 Kbyte block erase What I understand after looking some references is that sector is the smallest section in a memory device, and then we have blocks. 4KByte sector erase 3. On others erase can only be done per sector and the sectors are not of the same size. Sector 4 is 64 KB and finally Sector 5 This slide highlights the differences regarding the flash memory implementation between STM32G43X/4X, called category 2 microcontrollers, and STM32G47X/8X, called category 3 microcontrollers: Flash memory size is 128 Kbytes for category 2, 512 Kbytes for category 3 Number of banks is 1 for category 2, 1 or 2 for category3, depending on the DBANK option bit. Based on my understanding and what I can find online, both category 2 AND 3 devices can have flash sizes of 128kB, so they overlap. Adjust both the begin and the length of the flash sector in the linker script, e. The constraint is: when you want to erase, you have to erase the whole sector. For this microcontroller family we have this memory map: Sector - Address ini ~ Address end - May 27, 2021 · STM32 Projects. The information is in the reference manual of each MCU. I found only the start address of the flash in the stm32f302xc. It is the application’s responsibility to limit the size of the Flash area cycled more than 10 000 times to 256 Kbytes per bank. 1 Sector Addressing in STM32F4 The STM32F407VGTx, has 12 sectors in it’s FLASH memory with the first four, ie Sector 0 to Sector 3 being 16 KB each. Why does STM32CubeProgr Any Flash page can be chosen to be cycled more than 10 000 times, up to 100 000 times. If not You need to copy data to Dec 8, 2015 · Posted on December 08, 2015 at 11:30 I need to find out the sector and page size on my particular SOC, which is STM32F072C8T6. If your chip allows the writing to the 0xff filled FLASH you can store the data in another place of this sector. On some families flash can be erased by page - typically 1 KB or 2 KB. We can use the last few pages of the flash for this purpose. ting from sector 0 to 3, one sector of 128 Kbytes which is sector 4 and seven sectors o The sector number is used in the software procedure to erase a sector or to protect it. Compute the Number of Words 2. I have come across a few examples, and they achieve this by Oct 26, 2010 · My code therefore needs to know the flash sector size. According to the part number information from the data sheet (DM00090510), this is a 64 kB flash memory version. The Flash memory supports Enhanced Security features which can be configured using the option bytes: the Readout protection (RDP), the Sector write protection and 2 PCROP protection area (1 per bank) (execute-only memory). Note that read-while-write May 7, 2021 · I want to get the limiting address of the flash in the code itself, or at least the size of this flash. Contribute to controllerstech/STM32 development by creating an account on GitHub. But you cant set the bits of course - it can only be done by the erase operation. But, in that case, 4KByte sector means that it will erase from address 0 for example, until address 4000? For these reasons, ST offers STM32 MCUs that embed dual bank Flash memories designed to respond to the above needs. com Aug 29, 2025 · 本文通过对比F1、F4、L4系列的手册数据，浅谈对Bank、Sector、Page相关概念的理解。 以我们常用的STM32F103C8T6为例： 它具有64K的闪存大小，属于中容量产品。 在 STM32中文参考手册_V10 中，是这样描述嵌入式闪存的： 中容量产品主存储块最大为16x64位，每个存储块划分为128个1K字节的页，对应的表3如下 Apr 24, 2017 · The concept is the same, between page and sectors. Unlock Flash 3. Dec 15, 2023 · FirstSector = GetSector (FLASH_USER_START_ADDR); /* Get the 1st sector to erase */ And should I just set NbOfSectors=1 since I only need 1 sector for the 10 bytes of data? Oct 28, 2020 · I understand correctly that in stm32h743 you can delete only a sector of 128K bytes minimally? May 28, 2024 · Hello, I have an STM32H750B-DK board which includes two quad SPI flash chips (MT25QL512ABB8ESF-0SIT x 2). This feature can be used after a firmware upgrade to restart the device on the new firmware after a Reading and Writing on STM32 MCU Flash Memory Memory Divided by Pages Flash Module Organization (medium-density devices) Flash_Write_Data 1. Mar 14, 2023 · 本文通过对比F1、F4、L4系列的手册数据，浅谈对Bank、Sector、Page相关概念的理解。以我们常用的STM32F103C8T6为例：它具有64K的闪存大小，属于中容量产品。在STM32 基于STM32浅谈Bank、Sector、Page ,ST意法半导体中文论坛 Aug 27, 2025 · 关注+星标公众号，不错过精彩内容 作者 | strongerHuang 微信公众号 | 嵌入式专栏 大家都知道Flash是用于存储数据的存储器，但很多读者看到 页 (Page)、扇区 (Sector)、块 (Block) 等这些单位时一脸懵逼，这到底是什么，有什么区别？ 下面就来讲讲关于Flash内部结构组织以及相关的内容。 页、扇区、块的 May 7, 2010 · Posted on May 07, 2010 at 22:40 How to determine FLASH page size Apr 2, 2020 · I think it is an information about sectors of internal flash memory, but i cannot find information about flash memory sectors in RM0394 Ref manual. Programming (Writing) Flash 5. STM32 Internal Flash layoutOne confusing aspect of STM32 is that the flash layout differ greatly between families and even individual MCUs within a family. 1, Ta Jul 10, 2017 · Posted on July 10, 2017 at 18:49 Can anyone confirm what the Flash sector sizes are on this MCU version? All documentation lumps the F411xC with the F411xE even though the former has 256kB of flash, and the latter has 512kB. There are also differences in structures. Sep 7, 2023 · Hello, I'm searching for a way to use sector 0 as storage memory but no luck so far. Feb 1, 2019 · The OP's example has, name="@Internal Flash /0x08000000/064*0002Kg" has space for what appears to be a 3 digits for the number of sectors and 4 digits for sector size. stm32f07x series 2, STM32F10X Aug 14, 2025 · 文章浏览阅读1. The Flash interface allows swapping Bank 1 and Bank 2 memory mapping. The dual bank Flash memory allows a code to be executed in one bank, while another bank is being erased or programmed. I thought the sector size of the flash was 64KB. Erasing Flash 4. But it doesn't matter. it has a flash of 128 KB divided into following 4 sectors My query is that I want to store and retain some non-volatile data in the flash. I'm using STM32F401CCU6 and I'm working on a firmware which have to save about 300 bytes in a no volatile memory. As you have seen, on STM32F7 This slide shows an example of the Flash memory map. 1w次，点赞32次，收藏86次。本文对比了STM32F103与STM32F407的Flash操作，介绍了STM32F1基于页的512KB Flash读写方法，以及STM32F4基于扇区的更大容量（16K或64K）操作，包括页擦除、编程和数据传输的细节实现。 For these reasons, ST offers STM32 MCUs that embed dual bank Flash memories designed to respond to the above needs. See full list on controllerstech. So I am asking, what is a flash memory sector? Is it concept of just defined by each programmer? Or strictly defined by manufacture (ST Micro)? What is the relationship between Sector and Page? The STM32 products have built-in flash, and the size of their built-in Flash has the same size. First, characteristics and composition 1. STM32 devices organize Flash memory into sectors or pages, depending on the family, with specific alignment, access size, and erase requirements. This example is from STM32F76x/F77x devices with 2 Mbytes of Flash memory. The stm32f4xx_hal_flash_ex header defines the same number of sectors as Apr 29, 2020 · I'm trying to figure out at run-time what the flash page (sector) size is, but find it difficult to do so as there is no clear distinguishing factor between category 2 and 3 devices that can be used/read at run-time. When I use STM32CubeProgrammer to write or erase the external flash, the erase operation can only be done in 128KB units. Some chips do not allow it as the flash sector has its own CRC. 2. So, you can't find reference to pages because what you called pages are here called sectors. g. It avoids a CPU stalling during programming operations and protects the system from power failures or other errors. Feb 4, 2022 · STM32H750VB page size for flash erase - is it 128K, and if so, are there ways to partially erase the flash for persistent data storage?. This article will be described in the STM32F07X, STM32F10X, STM32F40X's built-in Flash structure, and how to read and write operations. On many STM32 microcontrollers you can zero the bits of the FLASH without erasing it. Lock Flash Flash_Read_Data Memory Divided by Sectors Flash_Write_Data Erasing the Flash Programming (Writing) Flash External References Every microcontroller Dec 2, 2018 · Full Chip Erase 2. Nov 29, 2023 · Hii there I am using STM32F410RB (M4). 12 sectors for each Flash memory bank Aug 28, 2025 · Flash Memory Architecture in STM32 Before diving into Flash programming, it’s essential to understand the underlying memory architecture. As these chips have different flash sector sizes, is it possible to read this from software? I can't see any reference to being able to do that. May 25, 2020 · Fig. STM32F7 documentation uses the sector term because they are much bigger than the typical pages in external flash memory. h file, but did not find the end Jun 1, 2019 · That depends. Jul 5, 2019 · Unlike most STM32 MCUs, it's possible to move the beginning of the flash on the F7, freeing up the 32k sectors. hpyndkuumzpmzgssygbrqxopxolrznb5sflssaj2dfoa67ayr