REL 1.2
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i.MX6 Qseven PMIC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6
Memory
2.6.1
DDR3 SDRAM
i.MX6 Qseven PMIC SOM by default supports 1GB DDR3 RAM memory in 64bit mode. To support this, it uses four
256MB DDR3 SDRAM ICs. These devices operate at 1.5V voltage level. Each pair of DDR3 ICs is physically located on
either side of the Qseven SOM. The RAM size can be expandable up to maximum of 4GB.
Note: By default, 512MB DDR3 with 32bit mode only supported in i.MX6 Solo CPU based Qseven PMIC SOM.
2.6.2
SPI NOR Flash
The i.MX6 Qseven PMIC SOM supports 2MB SPI NOR Flash as default boot device. This is connected to eCSPI1
controller of the i.MX6 CPU and operates at 3.3 Voltage level. The SPI flash memory is physically located on bottom
side of the Qseven SOM.
2.6.3
eMMC Flash
i.MX6 Qseven PMIC SOM supports 4GB eMMC (expandable) memory as mass storage and also can be used as boot
device. eMMC is directly connected to the uSDHC4 of the i.MX6 CPU and operating at 3.3 Voltage level. The eMMC
flash memory is physically located on topside of the Qseven SOM.
2.6.4
Micro SD Slot
i.MX6 Qseven PMIC SOM supports Micro SD slot to connect Micro SD card for Mass storage and also can be used as
Boot device. Micro SD Card Connector (J2) is directly connected to the uSDHC3 of the i.MX6 CPU. It supports card
detect feature. The main power to Micro SD Card Connector is 3.3 Voltage. Micro SD Connector is physically located
on topside of the Qseven SOM as shown below.
Figure 4: Micro SD Slot