Serial Flash - Silicon Laboratories SLWSTK6104A User Manual

Mgm220p wireless gecko module starter kit

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5.3 Serial Flash

The BRD4311B Radio Board is equipped with an 8 Mbit Macronix MX25R SPI flash that is connected directly to the MGM220P. The

figure below shows how the serial flash is connected to the MGM220P.

The MX25R series are ultra low power serial flash devices, so there is no need for a separate enable switch to keep current consump-

tion down. However, it is important that the flash is always put in deep power down mode when not used. This is done by issuing a

command over the SPI interface. In deep power down, the MX25R typically adds approximately 100 nA to the radio board current con-

sumption.

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PC02 (US0_CLK)

PC00 (US0_TX)

PC01 (US0_RX)

PA04 (GPIO)

MGM220P

Figure 5.3. Radio Board Serial Flash

UG461: MGM220P Wireless Gecko Module Starter Kit User's Guide

VMCU

VDD

SCLK

MOSI

8 Mbit

MISO

SCS

MX25R8035F

Peripherals

Rev. 1.0 | 18

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