Volatile Data Segment Start Address (Fw_Vdssa); Volatile Data Segment Length (Fw_Vdsl) - ST STM32L4 5 Series Reference Manual

Advanced arm-based 32-bit mcus

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Firewall (FW)

Volatile data segment start address (FW_VDSSA)

Address offset: 0x10

Reset value: 0x0000 0000

Bits 31:18 Reserved, must be kept at the reset value.

Bit 17 ADD[17]: Volatile data segment start address (only for STM32L496xx/4A6xx devices)

Bits 16:6 ADD[16:6]: Volatile data segment start address

Note: These bits can only be written before enabling the Firewall. Refer to

Bits 5:0 Reserved, must be kept at the reset value.

Address offset: 0x14

Reset value: 0x0000 0000

The LSB bits of the start address (bit 5:0) are reserved and forced to 0 in order to allow a

64-byte granularity.

Firewall initialization

DocID024597 Rev 5

Section 4.3.5:

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