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ST62T08BN3/SWD View Datasheet(PDF) - STMicroelectronics

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Description
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ST62T08BN3/SWD Datasheet PDF : 105 Pages
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ST6208C/ST6209C/ST6210C/ST6220C
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
11.5.4 RC Oscillator
The ST6 internal clock can be supplied with an ex-
ternal RC oscillator.
Symbol
Parameter
Conditio ns
Min Typ Max Unit
fOSC
RC oscillator frequency 1)
RNET
RC Oscillator external resistor 2)
RNET=22K
7.2
RNET=47K
5.1
RNET=100K
3.2
RNET=220K
1.8
RNET=470K
0.9
RNET=22K
3.7
RNET=47K
2.8
RNET=100K
1.8
RNET=220K
1
RNET=470K
0.5
see Figure 52 & Figure 53 22
8.6
5.7
3.4
1.9
0.95
4.3
3
1.9
1.1
0.55
10
6.5
3.8
2
1.1
MHz
4.9
3.3
2
1.2
0.6
870 K
Notes:
1. Data based on characterization results, not tested in production. These measurements were done with the OSCin pin
unconnected (only soldered on the PCB).
2. RNET must have a positive temperature coefficient (ppm/°C), carbon resistors should therefore not be used.
Figure 51. Typical Application with RC oscillator
EXTERNAL RC
OSCOUT
RNET
OSCIN
NC
fOSC
VDD
VDD
VDD
CURRENT COPY
74/105
1
CEX~9pF DISCHARGE
ST62XX

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