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Visitor II
July 13, 2026
Question

Looking for a modern, readily available replacement for IS42S32400F-6BL SDRAM (STM32H750XBH6 board)

  • July 13, 2026
  • 0 replies
  • 18 views

Hi everyone,

I'm designing a custom development board based on the STM32H750XBH6 and originally planned to use the ISSI IS42S32400F-6BL (128 Mbit, 4M × 32, SDR SDRAM, 166 MHz, 90-ball BGA).

However, this part appears to be obsolete/end-of-life, and availability is becoming an issue.

I'm looking for recommendations for a newer SDRAM that is:

  • Fully compatible (or requires minimal hardware/software changes)
  • 128 Mbit or larger
  • 32-bit data bus
  • 3.3 V SDR SDRAM
  • 166 MHz (or higher)
  • 90-ball BGA (preferred)
  • Currently in production and readily available from major distributors

Has anyone recently designed an STM32H750/H743 board and selected a newer SDRAM instead of the IS42S32400F-6BL?

I'd appreciate recommendations for specific part numbers that are currently in production and known to work well with the STM32 FMC interface.

Thanks in advance!