ST6208C/ST6209C/ST6210C/ST6220C
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
Figure 52. Typical RC Oscillator frequency vs.
DD
Figure 53. Typical RC Oscillator frequency vs.
V
Temperature (V = 5V)
DD
Rnet=22KOhm
Rnet=47KOhm
Rnet=100KOhm
Rnet=220KOhm
Rnet=470KOhm
fosc [MHz]
12
Rnet=22KOhm
fosc [MHz]
Rnet=47KOhm
Rnet=100KOhm
Rnet=220KOhm
Rnet=470KOhm
10
8
10
8
6
6
4
4
2
2
0
3
0
4
5
6
-40
25
95
125
VDD [V]
Ta [°C]
10.5.5 Oscillator Safeguard (OSG) and Low Frequency Auxiliary Oscillator (LFAO)
Symbol
Parameter
Conditions
Min
200
86
4
Typ
350
150
Max
800
340
Unit
T =25° C, V =5.0 V
Low Frequency Auxiliary Oscillator
A
DD
f
f
kHz
1)
LFAO
Frequency
T =25° C, V =3.3 V
A
DD
T =25° C, V =4.5 V
Internal Frequency with OSG ena-
bled
A
DD
MHz
OSG
T =25° C, V =3.3 V
2
A
DD
Figure 54. Typical LFAO Frequencies
fosc [kHz]
600
Ta=-40°C
Ta=25°C
Ta=125°C
500
400
300
200
100
0
3
4
5
6
VDD [V]
Note:
1. Data based on characterization results.
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STMICROELECTRONICS [ ST ]
