4.11 QSPI Serial Flash
The WBZ451 Curiosity Board has an on-board 64-Mb, 2.3-3.6V Serial Quad I/O (SQI) Flash SST26VF064B (U6) memory for storage of data. A default SST26VF064B at power-up enables WP# and HOLD pins and disables SIO2 and SIO3 pins allowing for SPI protocol operations without register configuration. Register configuration is required to switch to Quad I/O operation with QSPI.
| QSPI Flash | Pin on WBZ451PE Module | Description |
|---|---|---|
CE | PB10, QSPI_CS | QSPI chip select |
SO/SIO1 | PB13, QSPI_DATA1 | QSPI data channel 1 |
WP/SIO2 | PA0, QSPI_DATA2 | QSPI data channel 2 |
VSS | GND | Ground |
SI/SIO0 | PB12, QSPI_DATA0 | QSPI data channel 0 |
SCK | PB11, QSPI_SCK | QSPI clock |
Hold/SIO3 | PA1, QSPI_DATA3 | QSPI data channel 3 |
VDD | VDD | VDD |