Difference between revisions of "W25Qxx"
Jump to navigation
Jump to search
| Line 10: | Line 10: | ||
[[File:W25Q128 SOIC-8 Pinout.png|400px]] | [[File:W25Q128 SOIC-8 Pinout.png|400px]] | ||
| + | |||
| + | It is worth noticing that many (if not all) of these devices can operate in two different "modes". Regular [[SPI]] with a MOSI/MISO pair of signals, and Quad-SPI where 4 data lines are being used. | ||
== Memory Layout == | == Memory Layout == | ||
Revision as of 03:57, 26 February 2022
The W25Qxx is a common series of serial EEPROM chips.
Naming
These EEPROM chips are typically named "x25qxxx" where the first x indicates the manufacturer ("W" indicates Winbond) and the xxx after the Q indicates the size (in Mbits). A "W25Q128" is therefore 128 Mbits = 16 mB EEPROM manufactured by Winbond.
Connections
W25Qxx devices are available in a number of different packages, but the most common is a SOIC-8 package. These will typically have the following pinout:
It is worth noticing that many (if not all) of these devices can operate in two different "modes". Regular SPI with a MOSI/MISO pair of signals, and Quad-SPI where 4 data lines are being used.
Memory Layout
To be added