ST STM32L0x3 User Manual

Firewall (FW) RM0367
138/1043 RM0367 Rev 7
5.4.3 Non-volatile data segment start address (FW_NVDSSA)
Address offset: 0x08
Reset value: 0x0000 0000
5.4.4 Non-volatile data segment length (FW_NVDSL)
Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. ADD[23:16]
rw
15141312111098 7 6543210
ADD[15:8] Res. Res. Res. Res. Res. Res. Res. Res.
rw
Bits 31:24 Reserved, must be kept at the reset value.
Bits 23:8 ADD[23:8]: Non-volatile data segment start address
The LSB bits of the start address (bit 7:0) are reserved and forced to 0 in order to allow a
256-byte granularity.
Note: These bits can only be written before enabling the Firewall. Refer to Section 5.3.5:
Firewall initialization.
Bits 7:0 Reserved, must be kept at the reset value.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. LENG[21:16]
rw
1514131211109876543210
LENG[15:8]
Res. Res. Res. Res. Res. Res. Res. Res.
rw
Bits 31:22 Reserved, must be kept at the reset value.
Bits 21:8 LENG[21:8]: Non-volatile data segment length
LENG[21:8] selects the size of the Non-volatile data segment expressed in bytes but is a
multiple of 256 bytes.
The segment area is defined from {ADD[23:8],0x00} to {ADD[23:8]+LENG[21:8], 0x00} - 0x01
Note: If LENG[21:8] = 0 after enabling the Firewall, this segment is not defined, thus not
protected by the Firewall.
These bits can only be written before enabling the Firewall. Refer to Section 5.3.5:
Firewall initialization.
Bits 7:0 Reserved, must be kept at the reset value.

ST STM32L0x3 Specifications

General

Brand	ST
Model	STM32L0x3
Category	Microcontrollers
Language	English