3.9 Serial Flash

The WFI32-IoT 2.0 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.

Table 3-7. Serial Flash Pin Description
Pin Number Pin on Serial Flash (SST26VF032B) Pin Description of Serial Flash Pin on WFI32E03PC Module(1)
1CEChip EnableSPI1CS/RPA1/RA1
2SOSerial Data Output for SPI modeSDI1/RPC7/RC7
3WPWrite-ProtectNot connected
4VSSGroundGND
5SISerial Data Input for SPI modeSDO1/RPC8/RC8
6SCKSerial ClockSCK1/RPC6/RC6
7HOLDHoldNot connected
8VDDInput power supplyVDD
Note:
  1. For more details on the WFI32E03PC Module pins, refer to the PIC32MZ W1 MCU and WFI32 Module with Wi-Fi® and Hardware-Based Security Accelerator Data Sheet (DS70005425).