Limitations; Operating Voltage; Octo-Spi Dram Device; Table 17. Configuration Elements Related To Octo-Spi Flash Device - ST STM32L4R9I User Manual

UM2248
Table 17
Octo-SPI flash memory device.
.
Element
R221
R215
R67
SB54
R75
SB55
6.24.1

Limitations

Octo-SPI flash memory device operation is exclusive to OpAmp1 and with motor control.
6.24.2

Operating voltage

The voltage of the Octo-SPI flash memory device MX25LM51245GXDI00 is in the range of
2.7 V to 3.6 V.
6.25

Octo-SPI DRAM device

IS66WVH8M8BLL-100BLI, a 64-Mbit self-refresh dynamic RAM (DRAM) device with a
HyperBus™ interface, is installed on the STM32L4R9I-EVAL main board, in the U5 position.
It allows the evaluation of the STM32L4R9AII6 Octo-SPI interface.
6.25.1 Operating voltage
The voltage of the Octo-SPI DRAM device IS66WVH8M8BLL-100BLI is in the range of
2.7 V to 3.6 V.
6.25.2

Limitations

The board does not support Octo-SPI operations with IS66WVH8M8BLL-100BLI. No
workaround is available. Refer to the errata sheet STM32L4Rxxx and STM32L4Sxxx device
errata (ES0393).
shows the configuration elements and their settings allowing them to access the

Table 17. Configuration elements related to Octo-SPI flash device

Setting
R221 in
Default setting: OCTOSPI1_CLK is available on the Octo-SPI flash
memory device.
R215 out
OCTOSPI1_CLK is not available on the Octo-SPI flash memory
R221 out
device. PA3 port of STM32L4R9AII6 is routed to the OpAmp1_Vout
R215 in
signal.
R67 ON
Default setting: OCTOSPI1_IO6 data line is available to the Octo-
SPI flash memory device.
SB54 OFF
OCTOSPI1_IO6 is not available on the Octo-SPI flash memory
R67 OFF
device. PC3 port of SSTM32L4R9AII6 is routed to the motor-control
SB54 ON
signal.
R75 ON
Default setting: OCTOSPI1_IO7 data line is available to the Octo-
SPI flash memory device.
SB55 OFF
OCTOSPI1_IO7 is not available on the Octo-SPI flash memory
R75 OFF
device. PC4 port of STM32L4R9AII6 is routed to the motor-control
SB55 ON
signal.
Configuration
UM2248 Rev 5
Hardware layout and configuration
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