User Manual

P A G E 20
mikromedia 7 CAPACITIVE U S E R M A N U A L
P A G E 20
mikromedia 7
CAPACITIVE
U S E R M A N U A L
4. Data storage
The mikromedia 7 development board is equipped with two
types of external memory: with a microSD card slot, and with
a Flash memory module.
4.1 microSD card slot 4.2 External flash storage
The microSD card slot (1) allows storing large amounts of data externally,
on a microSD memory card. It uses the Serial Peripheral Interface (SPI) for
communication with the MCU. The microSD card detection circuit is also
provided on the board. The microSD card is the smallest SD Card version,
measuring only 5 x 11 mm. Despite its small size, it allows tremendous
amounts of data to be stored on it. In order to read and write to the SD
Card, a proper software/firmware running on the host MCU is required.
mikromedia 7 is equipped with the SST26VF064B Flash module (2). The
Flash memory module has a density of 64 Mbits. Its storage cells are
arranged in 8-bit words, resulting in 8Mb of non-volatile memory in total,
available for various applications. The most distinctive features of the
SST26VF064B Flash module are its high speed, very high endurance, and
very good data retention period. It can withstand up to 100,000 cycles, and
it can preserve the stored information for more than 100 years. It also uses
the SPI interface for communication with the host MCU.
1
Figure 10: MicroSD card slot view
P A G E 20
DATA STORAGE