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RM0432
9
System configuration controller (SYSCFG)
9.1
SYSCFG main features
The STM32L4+ Series devices feature a set of configuration registers. The main purposes
of the system configuration controller are the following:
•
Remapping memory areas
•
Managing the external interrupt line connection to the GPIOs
•
Managing robustness feature
•
Setting SRAM2 write protection and software erase
•
Configuring FPU interrupts
•
Enabling the firewall
•
Enabling /disabling I
booster for I/Os analog switches.
9.2
SYSCFG registers
9.2.1
SYSCFG memory remap register (SYSCFG_MEMRMP)
This register is used for specific configurations on memory remap.
Address offset: 0x00
Reset value: 0x0000 000X (X is the memory mode selected by the BOOT0 pin and BOOT1
option bit)
31
30
29
Res.
Res.
Res.
Res.
15
14
13
Res.
Res.
Res.
Res.
2
C Fast-mode Plus driving capability on some I/Os and voltage
28
27
26
25
Res.
Res.
Res.
12
11
10
9
Res.
Res.
Res.
System configuration controller (SYSCFG)
24
23
22
Res.
Res.
Res.
8
7
6
FB_
Res.
Res.
MODE
rw
RM0432 Rev 6
21
20
19
18
Res.
Res.
Res.
Res.
5
4
3
2
Res.
Res.
Res.
rw
17
16
Res.
Res.
1
0
MEM_MODE[2:0]
rw
rw
351/2301
365
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