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akhilvarghese
akhilvarghese
Associate
April 7, 2019
Question

Flash memory type for STM32F103C8T6

  • April 7, 2019
  • 4 replies
  • 3113 views

Hello All,

I am using STM32F103C8T6.

it has a Flash memory of 64Kbytes.

I am interested to know whether its a NAND or NOR flash. I tried going through its data sheet. But could not find explicit mention of flash memory type details.

Could you please help me in understanding this?

I am planning to use openocd to flash program. and I would have to know the type of flash before set up flashing.

PS. I am new to controller hardware level. I have worked only on application level. So pardon if its a silly question.

thanks in advance.

This topic has been closed for replies.

4 replies

Uwe Bonnes
Uwe Bonnes
Chief
April 7, 2019

It is NOR flash. Most programmers, including OpenOCD, will not know that when you select STM32F1.

akhilvarghese
akhilvargheseAuthor
Associate
April 8, 2019

Thanks @Uwe Bonnes​ 

Do we have any reference specifying the same ? or is it like all MCU flash are ROM due to faster read speed.

Pavel A.
Pavel A.
April 7, 2019

You don't find a datasheet of the STM32 internal flash because it is built into the chip and is not available separately.

For a higher-level developer, this is basically all one should know about the embedded flash of STM32:

https://eda360insider.wordpress.com/2011/09/22/ingenious-architectural-features-allow-st-micro-to-extract-maximum-performance-from-new-microcontroller-family-based-on-arm-cortex-m4-cost-less-than-6-bucks-in-1000s/

Read more about the "ART" thing in ST documentation.

-- pa

S.Ma
S.Ma
Principal
April 7, 2019

most differences between NOR and NAND seems the erase and access time and density, which makes most MCU with built-in flash NOR based. Check NOR and NAND SPI specs to learn differences.

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