6.9 QSPI Flash Memory

The EFM32 Giant Gecko GG11 Starter Kit features a Macronix MX25R 32 Mbit external NOR flash memory connected to the EFM32's

Quad SPI (QSPI) peripheral. The external flash is memory mapped in both code space and user space, and can be used for data stor-

age or for storing program code that can be executed directly from flash due to the QSPI peripheral's execute-in-place (XIP) support.

QSPI_PWR_ENABLE

PG0 (QSPI0_SCLK #2)

PG1 (QSPI0_DQ0 #2)

PG13 (GPIO)

QSPI_DQ0

QSPI_CS

VMCU

VDD

EFM32

32 Mbit QSPI

Flash Memory

PG9 (QSPI0_CS0 #2)

PG2 (QSPI0_DQ1 #2)

PG3 (QSPI0_DQ2 #2)

PG4 (QSPI0_DQ3 #2)

QSPI_SCLK

QSPI_DQ1

QSPI_DQ2

QSPI_DQ3

Figure 6.9. QSPI Flash Memory

6.10 Micro-SD Slot

The micro-SD slot is connected to the EFM32's SDIO peripheral. The SDIO peripheral supports both SD memory cards as well as

SDIO devices with a micro-SD form factor. The micro-SD slot has an active low card detect switch.

SDIO_PWR_ENABLE

PE14 (SDIO_CLK #1)

PA0 (SDIO_DAT0 #1)

PE7 (GPIO)

SDIO_DAT0

SDIO_CMD

VMCU

VDD

EFM32

PE15 (SDIO_CMD #1)

PA1 (SDIO_DAT1 #1)

PA2 (SDIO_DAT2 #1)

PA3 (SDIO_DAT3 #1)

SDIO_CLK

SDIO_DAT1

SDIO_DAT2

SDIO_DAT3

Micro-SD Slot

SDIO_CD

PB10 (SDIO_CD #3)

Figure 6.10. Micro-SD Slot

UG287: EFM32 Giant Gecko GG11 Starter Kit User's Guide

Peripherals

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