External Data Flash

This data Flash from Microchip is an 8Mb SPI serial Flash. It supports single voltage read and write operations under 2.7-3.6V power supply.

Figure 1. External Data Flash
Table 1. Pinout for the SPI Interface
SPI Signal Name MCU SPI Pin Data Flash Pin
SCK PA3 pin #6
SS PA4 pin #1
MISO PA2 pin #2
MOSI PA1 pin #5