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Chapter 19 Random Number Generator (μPD70F3187 only)
μPD70F3187 incorporates a hardware random number generator (RNG). The random number genera-
tor is not supported on μPD70F3447.
19.1 Features
•
Random number sequence passing FIPS and Maurer test
•
Random number format: 16 bits
•
Seed generated by hardware
19.2 Configuration
(1)
Random number register (RNG)
The RNG register is a 16-bit register that holds the random number.
After read access to this register a certain time is required to generate the next random number. If
a consecutive read access takes place before the new random number has been generated, the
read access will be delayed.
The RNG register is read-only, in 16-bit units.
Reset input causes an undefined register content.
After reset:
undefined
15
14
RNG
Figure 19-1: Random Number Register (RNG)
R
Address:
13
12
11
10
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