Memories Forum Discussions
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Nor Flash
The NOR Flash Memory forum discusses critical safety features for automotive and industrial systems, and Semper NOR Flash Memory with ASIL-B compliant and ASIL-D-ready.
Hyper Flash
The HyperFlash NOR Flash memories Forum offers discussions on automotive advanced driver assistance systems (ADAS), automotive instrument cluster, automotive infotainment systems, and communication equipment.
Hyper RAM
HyperRAM™ memory Forum discusses self-refresh DRAM operating on the 12-pin HyperBus interface. With a read throughput up to 333 MB/s, the HyperRAM for SoCs with limited on-board RAM providing external scratch-pad memory for fast read and write operations.
Non Volatile RAM (F-RAM & NVSRAM)
Non-volatile RAM forum discusses Technology such as F-RAM and nvSRAM, which combine non-volatile data storage up to 16Mbit density with the high performance of RAM. These low-power memories offer high endurance, high data retention and instant non-volatility without external battery back-up, enabling system reliability and cost reduction.
Featured Discussions
Hello,
I am currently developing software for CY15FRAMKIT-002 with a STM32F7 Nucleo Board. I was able to read the Device ID (RDID, command 9Fh) as 0000000006825150 in SPI mode and perform a write to and read from the memory successfully. Now, I configured the device to QPI mode with the following settings in the following sequence:
1. Set the Memory Latency to 0x2 by setting bits 7:4 in Configuration Register 1
2. Set the Register Latency to 0x2 by setting bits 7:6 in Configuration Register 5
3. Enabled QPI mode by setting bit 6 in Configuration Register 2
Once in QPI mode, I tried reading the Device ID (RDID, command 9Fh) but always got the response as 8888888888888888. When I tried to read and write the memory in QPI mode, that seems to work successfully. Then why does the Device ID command not repond with the correct value when it is a supported command in QPI mode? Is this an issue with the GPIO state for IO3 pin or something else? For information, my GPIO pin states are set as below for the STM32:
nCS: NOPULL
SCK: NOPULL
IO0: NOPULL
IO1: NOPULL
IO2: NOPULL
IO3: NOPULL
If this is a GPIO pin state issue, I would wonder why my read and writes work in QPI mode with the set latency.
Regards,
Surabhi
Hi,
I don't understand what is the difference between single chip enable and dual chip enable as option.
Could you explain simply how to access to memory and the advantage/ disadvantage for each single/dual chip enable ?
Best regards,
Show Less
Hello:
The C66 series master controller chip used to drive the S25FS512S chip
I used the original driver for N25Q064 to drive it, and their 3-byte address commands are basically the same, but I found that it is not right, the data coming back from the readid command does not correspond to the manual, and if I erase and read/write it directly, it appears to be shifted, for example, if I write 0x55, I read 0x2A, and if I write 0xAA, I read back to D5.
I've adjusted the SPI clock mode, tried all four modes of polarity and phase, none of them are correct, is there a big guy on the TEAM to guide me?
Or can you give a routine that has successfully driven the S25FS512S?
In the attachment I put the driver routines I'm using now.
Thank you!
smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/Nor-Flash/S25FS512S-%E8%8A%AF%E7%89%87%E7%9A%84SPI%E6%8E%A5%E5%8F%A3%E9%A9%B1%E5%8A%A8%E4%BE%8B%E7%A8%8B/td-p/478716
Show LessHi Everyone,
We are using parallel NOR flash(S29JL032J) in our custom board. I have gone through the datasheet of this chip. Need to develop driver for this chip. Any example programs on this will be greatly helpful. Tried searching the web, but no luck.
Any references?
ThankYou!!
Show LessHi, Can you please suggest 512Kx8 SRAM with external battery connection?
Hello
We are using FRAM CY15B104QI memory in our project. We are using MSP430FR5994 microcontroller and we want to communicate with FRAM using SPI.
We have an issue with accessing the memory. We tried to read status register but we did not get expected values on MISO pin (MISO pin did not change its state at all). We made it work once but after that the same code did not work and we do not know what can be the issue.
I attached the archived image of workig example (the only one when we get the expected response). I also attached 2 screenshots of the signals on CS, CLK and MOSI that we measured using an osciloscope.
Are there any known issues with the memory or has this occurred to someone else?
Best regards
Show LessS29GL128P11TFI020 is discontinued (PDN PD_075_24 - see attached, page 6) and the replacement recommended on the same PDN is S29GL128S90TFI020. However, S29GL128P11TFI020 can work in either byte or word mode, and I don't see that capability with the recommended replacement part S29GL128S90TFI020. Of course, my legacy design uses the byte mode of operation. How can Infineon recommend a non 100% compatible replacement!? Can anyone confirm this, or am I missing something? Perhaps it is because this was originally a Cypress part.
Show LessHi,
I need the IBIS model for the below IC for SI analysis.
S25FL256SAGNFI001
Thanks
Bhavith
I want to read ID of Flash (S26KS128SDPBHB020)
2 My question is ,what is the "SA" meaning in the chart 7.1(The doc url: S26KS128SDPBHB020 Datasheet )
Which explain of "SA" is right ?
Thanks
Show Less