Rng Functional Description; Rng Block Diagram; Rng Internal Signals; Table 99. Rng Internal Input/Output Signals - ST STM32G0 1 Series Reference Manual

True random number generator (RNG)
19.3

RNG functional description

19.3.1

RNG block diagram

Figure 72
rng_it
rng_clk
19.3.2

RNG internal signals

Table 99
the STM32 product level (on pads).
Signal name
460/1390
shows the RNG block diagram.

Figure 72. RNG block diagram

Banked Registers
control
data
AHB
interface
status
AHB clock domain
RNG clock domain
describes a list of useful-to-know internal signals available at the RNG level, not at

Table 99. RNG internal input/output signals

Signal type
rng_it Digital output
rng_hclk Digital input
rng_clk Digital input
RNG_CR
RNG_DR
RNG_SR
Fault detection
Clock checker
en_osc
RNG global interrupt request
AHB clock
RNG dedicated clock, asynchronous to rng_hclk
RM0444 Rev 5
True RNG
Conditioning logic
128-bit
Raw data shift reg
2-bit
Sampling &
Normalization (x 2)
Analog Analog
noise noise
source 1 source 2
Analog noise source
Description
RM0444
MSv42097V2