which new "esp" 8 pin ic is this on the new esp32 modul? ;-)

WiFive
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Re: which new "esp" 8 pin ic is this on the new esp32 modul? ;-)

Postby WiFive » Sat Jul 15, 2017 9:45 pm

Yes, important info to keep straight

SD pins are for SDIO slave function
HS1 pins are for SDIO/MMC master function
SPI pins are for SPI/QPI

Need warning: Do not try to make QPI device into SDIO device (by imagination) :!:

Actually would be helpful to have SPI_IO0-3 labels too

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rudi ;-)
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Re: which new "esp" 8 pin ic is this on the new esp32 modul? ;-)

Postby rudi ;-) » Sun Jul 16, 2017 4:18 pm

WiFive wrote: ..
Need warning: Do not try to make QPI device into SDIO device (by imagination) :!:
..
where you know my imagination thinking? :mrgreen:
WiFive wrote: Actually would be helpful to have SPI_IO0-3 labels too
+1

btw.
now i know, why the most did wrong on SD Card implemention on start.
they did think this silkscreen is for SD Card too - ( little confusing ) but now we know.

best wishes
rudi ;-)
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rudi ;-)
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ESP-PSRAM64 & ESP-PSRAM64H

Postby rudi ;-) » Thu Jun 21, 2018 7:39 am

update
=======

ESP-PSRAM64 & ESP-PSRAM64H

ESP-PSRAM64 and ESP-PSRAM64H are 64 Mbit serial pseudo SRAM devices that are organized in 8Mx8 bits.
They are fabricated using the high-performance and high-reliability CMOS technology.
ESP-PSRAM64 operates at 1.8V and can offer high data bandwidth at 144 MHz clock rate, while
ESP-PSRAM64H operates at 3.3V and can support up to 133 MHz clock rate. Note, however, that
burst operations which cross page boundaries have a lower max input clock frequency at 84 MHz.

Both of the PSRAM devices can be accessed via the Serial Peripheral Interface (SPI). Additionally, a
Quad Peripheral Interface (QPI) is supported if the application needs faster data rates. The devices
also support unlimited reads and writes to the memory array.

Details taken from the Datasheet [ SRC ]
detail.jpg
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best wishes
rudi ;-)
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rudi ;-)
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Re: which new "esp" 8 pin ic is this on the new esp32 modul? ;-)

Postby rudi ;-) » Thu Jun 21, 2018 11:24 am

btw:
have a note about MP WROVER and update
ESP32-WROVER 64-Mbit PSRAM*
ESP32-WROVER-I 64-Mbit PSRAM*

best wishes
rudi ;-)
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