Where is the flash memory on the NodeMCU ESP8266 v3?

Question

In the NodeMCU v3 specs it says it has 4Mb flash memory. In the ESP-12EX datasheet it says the MCU has no rom, but can boot from an SPI external memory.

However, I don't see any flash memory chip on the board, so I was wondering... where is it ?

score 4 · Answer 1 · answered Dec 23 '22 at 20:06

4

It's covered by the can/shield.

On the picture below, the shield is removed. The IC in the right of the ESP is the flash.

ESP32

Source: Wikipedia

answered Dec 23 '22 at 20:06

Linkyyy

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Matt S · Accepted Answer · 2022-12-23T21:05:56.827

3

The ESP12 is a RF module which contains a microcontroller (the ESP8266), and a ROM chip (the 25Q128FVSQ according to this picture I found of its interior).

Picture from here, which also has more details about the NodeMCU.

edited Dec 23 '22 at 21:05

answered Dec 23 '22 at 20:08

Matt S

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Where is the flash memory on the NodeMCU ESP8266 v3?

2 Answers2