3.9 Serial Flash
The WFI32-IoT board has an on-board 32-Mbit external SPI Flash (SST26VF032B) memory for the storage of data. For more details on the serial Flash, refer to the SST26VF032B/SST26VF032BA 2.5V/3.0V 32-Mbit Serial Quad I/O™ (SQI™) Flash Memory Data Sheet (DS20005218). The following table describes the details of the serial Flash pin connection.
| Pin Number | Pin on Serial Flash (SST26VF032B) | Pin Description of Serial Flash | Pin on WFI32E01PC Module(1) |
|---|---|---|---|
| 1 | CE | Chip Enable | SPI1CS/RPA1/RA1 |
| 2 | SO | Serial Data Output for SPI mode | SDI1/RPC7/RC7 |
| 3 | WP | Write-Protect | Not connected |
| 4 | VSS | Ground | GND |
| 5 | SI | Serial Data Input for SPI mode | SDO1/RPC8/RC8 |
| 6 | SCK | Serial Clock | SCK1/RPC6/RC6 |
| 7 | HOLD | Hold | Not connected |
| 8 | VDD | Input power supply | VDD |
Note:
- For more details on the WFI32E01PC module pins, refer to the PIC32MZ1025W104 MCU and WFI32E01 Module with Wi-Fi® and Hardware-based Security Accelerator Data Sheet (DS70005425).