Datasheet

ST72334J/N, ST72314J/N, ST72124J
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CLOCK CHARACTERISTICS (Cont’d)
16.5.5 Clock Security System (CSS)
Figure 73. Typical Safe Oscillator Frequencies
Note:
1. Data based on characterization results, tested in production between 90KHz and 600KHz.
2. Filtered glitch on the f
OSC
signal. See functional description in Section 9.4 on page 31 for more details.
Symbol Parameter Conditions Min Typ Max Unit
f
SFOSC
Safe Oscillator Frequency
1)
T
A
=25°C, V
DD
=5.0V 250 340 550
kHz
T
A
=25°C, V
DD
=3.4V 190 260 450
f
GFOSC
Glitch Filtered Frequency
2)
30 MHz
3.2 5.5
VDD [V]
200
250
300
350
400
fosc [kHz]
-40°C
+25°C
+85°C
+125°C