ST STM32L4+ Series Reference Manual page 1634

Tamper and backup registers (TAMP) applied to STM32L4P5xx and STM32L4Q5xx only
48.3 TAMP functional description
48.3.1 TAMP block diagram
TAMP_IN1
TAMP_IN2
...
TAMP_INx
tamp_ker_ck
tamp_evt
tamp_it
tamp_pclk
1. The number of external tampers depends on products.
48.3.2 TAMP pins and internal signals
TAMP_INx (x = pin index)
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Figure 458. TAMP block diagram
Tamper detection
EDGE detection
LEVEL detection
Tamper detection
EDGE detection
LEVEL detection
...
Tamper detection
EDGE detection
LEVEL detection
IRQ interface
Registers interface
Table 327. TAMP input/output pins
Pin name
Input
RM0432 Rev 6
TAMP1F
TAMP2F
(1)
TAMPxF
Signal type
Tamper input pin
...
tamp_ker_ck clock domain
Backup registers
tamp_pclk clock domain
Description
RM0432
tamp_trg1
tamp_trg2
MSv43847V2