Nor Flash Forum Discussions

Hello,

Have Data retention and cycling endurance test been made for this type of memory?
Is there a formula for calculating the lifespan of the memory depending on the cycles?

Thank you in advance!

Hi.

My customer is considering "S29JL064J70TFI000".
There was a description like the figure below in the guide that was in the spansion era.
Should I still be concerned about this phenomenon?

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(6) Precautions when using toggle bit

Toggling is normally done by DQ6 alternately outputting “H” and “L” at each /OE access.
When using /CE and disabling /OE access, the following precautions are required.
I will.

When using the toggle bit for termination detection, increasing /CE
If you try to disable /OE access, /CE comes up and then /OE comes up.
It is necessary to take 5ns or more before it falls.

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best regards

Hello, I have two chips to find replacements, please help to find the model of Infineon. [MT25QL128ABA8ESF-0AAT][MT47H64M16NF-25E AAT:M]Micron.

No need to change the original PCB and software。

Thank you.

Dear Team

I am using Parallel NOR Flash memory part : S70GL02GS12FHIV20 in our application. From datasheet, I can able to understand that, V2 - Corresponds to lowest address sector protected. Based on previous query, lowest address sector protected must be Zeroth address sector (i.e 128KB). Below are my query:

1. When does the lowest sector address shall gets protected?

2. If the Lowest sector address is gets locked. How to unlock the lowest address sector?

3. What are the possible ways to make the sector locked?

Hi,

We have set up a Linux jffs2 (read/write file system for flash) area on S25HL02GT, and read/write to/from this area using Linux.
Since the file system is used, the write unit may be less than the page size, and the write start address may not be a multiple of the page size.

The page size of this product is 256B (bytes), but if 68B of data is written and the starting address is not a multiple of the page size (for example, 0x2c00a48), STR1V[6] (bit 6 of Status Register 1, Programming Error Status Flag) is set to 1.

Assume that the flash data status is as follows

Address Data
02c006e0: 35 d4 eb 5c 67 0c 70 4c 2f 6f 70 74 2f 54 4f 4f
02c006f0: 4c ff ff ff ff ff ff ff ff ff ff ff ff ff
02c00700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff

In this state, I cannot write from address 0x02c006f4.
Probably because there is data at 0x02c006f0 (0x4c),
The ECC function cannot write 16 bytes from 0x02c006f0 because there is data in 0x02c006f0 (0x4c).

In fact, if the byte sequence "ef be ad de ef be ad de ef be ad de ef be ad de ef be ad de" is written to
For example, if 68 bytes are written from address 0x02c006f4, the result is as follows,
The result is as follows: 16 bytes cannot be written from 0x02c006f0.

Address Data
02c006e0: 35 d4 eb 5c 67 0c 70 4c 2f 6f 70 74 2f 54 4f 4f
02c006f0: 4c ff ff ff ff ff ff ff ff ff ff ff ff ff
02c00700: ef be ad de ef be ad de ef be ad de ef be ad de

Does this product not support such data writing?
Incidentally, the Micron MT25Q series can write.

The Linux version is 5.4-based provided by XILINX.
Since the above Linux is s25hx unsupported, I have modified linux-xlnx/drivers/mtd/spi-nor/spi-nor.c referring to AN233855.
(https://github.com/Xilinx/linux-xlnx/blob/xlnx_rebase_v5.4/drivers/mtd/spi-nor/spi-nor.c)

Best Regards,

Kumada

Can you provide the following IBIS model for Semper NOR FLASH products?
I have not been able to find any information on IBIS models, although VERILOG seems to be available.
・IBIS model availability
・Availability of Power Aware IBIS model

我们在用Dediprog 来预烧录FW到S28HS512TGABHM013后， 也验证了是可以pass的

不过我们mount到板子上后，没法启动，但是这个FW 我们可以通过在线烧录到这颗flash里是可以启动的。

请问下，我们在烧录的时候有什么要注意的么？

另外CPU是用的TI的AM62XX.