Questions tagged [psram]
The psram tag has no usage guidance.
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Is QSPI pseudo-sram here to stay? [closed]
Doing a new design for a industrial printer that was using an expensive SRAM part on an old Hitachi part. The new Cortex M processor has limited bus pins, and we're thinking of putting a QSPI RAM on ...
- 183
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Trying to add Lyontek SPI RAM to ESP32D
I am trying to add an SPI RAM to my ESP32D on my custom PCB.
On the first revision of the PCB, I screwed up, so I am trying to make it for the next revision.
The ESP32D already uses SPI to handle the ...
- 222
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PSRAM with 32-bit data bit depth
Although there are lots of PSRAMs transmitting data at 16-bit bit depth, it seems almost impossible to see a 32-bit PSRAM. Is there any reason for not making such product? (I'm not asking for product ...
- 719
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Replacing Pseudo-SRAM with SRAM
This week I am repairing an old Game Gear, suffering from bad video memory. The original IC is a HM65256BLFP-10T: an asynchronous Pseudo-Static 8-bit 32k-word RAM with an access time of 100ns.
I ...
- 308
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What "bus turnaround" delay should my PSRAM have?
I have a PSRAM driven by an STM32. One of the timing options for the STM32 is the bus turnaround FSMC_BusTurnAroundDuration. The ARM reference manual (see page 1250)...
- 11.1k
3
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3
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PSRAM: First operation bogus, later operations fine
I have a PSRAM driven by an STM32F2 in the default asynchronous mode. The PSRAM works fine except for the very first read or write operation.
After the first read or write operation (which produces ...
- 11.1k
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Porting an STM32 PSRAM driver
I have an STM32F2 development board that came with a PSRAM (IS61WV10248BLL), and I have a custom board with a different PSRAM (MT45W8MW16BGX).
I have managed to get the PSRAM on the development board ...
- 11.1k