Thoughts on designing a new controller

Hardware Electronics
179
    • Embedded flash:

Flash connected internally via IO16, IO17, SD_CMD, SD_CLK, SD_DATA_0 and SD_DATA_1 on ESP32-D2WD and ESP32-PICO-D4.

* 0 MiB (ESP32-D0WDQ6, ESP32-D0WD, and ESP32-S0WD chips)
* 2 MiB (ESP32-D2WD chip)
* 4 MiB (ESP32-PICO-D4 SiP module)
  • External flash & SRAM: ESP32 supports up to four 16 MiB external QSPI flashes and SRAMs with hardware encryption based on AES to protect developers’ programs and data. ESP32 can access the external QSPI flash and SRAM through high-speed caches.
    • Up to 16 MiB of external flash are memory-mapped onto the CPU code space, supporting 8-bit, 16-bit and 32-bit access. Code execution is supported.
    • Up to 8 MiB of external flash/SRAM memory are mapped onto the CPU data space, supporting 8-bit, 16-bit and 32-bit access. Data-read is supported on the flash and SRAM. Data-write is supported on the SRAM.

ESP32 chips with embedded flash do not support the address mapping between external flash and peripherals.

https://www.analoglamb.com/product/alb32-wrover-esp32-module-with-64mb-flash-and-32mb-psram/

https://www.analoglamb.com/product/esp-32s-alb/

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