RM0017 Datasheet, PDF (724/904 Pages) STMicroelectronics – The SPC560Bx and SPC560Cx is a new family

RM0017
Register Protection
29.3
Modes of operation
The Register Protection module is operable when the module under protection is operable.
29.4
External signal description
There are no external signals.
29.5
Memory map and register description
This section provides a detailed description of the memory map of a module using the
Register Protection. The original 16 KB module memory space is divided into five areas as
shown in Figure 389.
Base + 0x0000
module register space
6 KB
Area 1
Base + 0x1800
Base + 0x2000
Base + 0x3800
Base + 0x3E00
Base + 0x3FFF
2 KB Reserved
mirror module register space
with user defined
soft locking function
6 KB
1.5 KB Lock Bits
512 B Configuration
Area 2
Area 3
Area 4
Area 5
Figure 389. Register protection memory diagram
Area 1 spans 6 KB and holds the normal functional module registers and is transparent for
all read/write operations.
Area 2 spans 2 KB starting at address 0x1800. It is a reserved area, which cannot be
accessed.
Area 3 spans 6 KB, starting at address 0x2000 and is a mirror of area 1. A read/write
access to a 0x2000+X address will reads/writes the register at address X. As a side effect, a
write access to address 0x2000+X sets the optional soft lock bits for address X in the same
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