st62t25cn6 STMicroelectronics, st62t25cn6 Datasheet - Page 75
st62t25cn6
Manufacturer Part Number
st62t25cn6
Description
8-bit Mcus With A/d Converter, Two Timers, Oscillator Safeguard & Safe Reset
Manufacturer
STMicroelectronics
Datasheet
1.ST62T25CN6.pdf
(105 pages)
- Current page: 75 of 105
- Download datasheet (2Mb)
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
11.5.4 RC Oscillator
The ST6 internal clock can be supplied with an external RC oscillator. Depending on the
accuracy of the frequency is about 20%, so it may not be suitable for some applications.
Notes:
1. Data based on characterization results, not tested in production. These measurements were done with the OSCin pin
2. R
Figure 51. Typical Application with RC Oscillator
f
R
OSC
Symbol
unconnected (only soldered on the PCB).
NET
NET
EXTERNAL RC
must have a positive temperature coefficient (ppm/°C), carbon resistors should therefore not be used.
R
RC oscillator frequency
RC Oscillator external resistor
NET
OSC
OSC
NC
IN
OUT
Parameter
1)
C
EX
~9pF DISCHARGE
2)
f
OSC
R
R
R
R
R
R
R
R
R
R
see
NET
NET
NET
NET
NET
NET
NET
NET
NET
NET
Conditions
Figure 52
=22 k
=47 k
=100 k
=220 k
=470 k
=22 k
=47 k
=100 k
=220 k
=470 k
&
V
V
Figure 53
DD
DD
Min
7.2
5.1
3.2
1.8
0.9
3.7
2.8
1.8
0.5
22
1
V
DD
MIRROR
CURRENT
ST6215C/ST6225C
0.95
0.55
Typ
8.6
5.7
3.4
1.9
4.3
1.9
1.1
3
R
Max
ST62XX
NET
6.5
3.8
1.1
4.9
3.3
1.2
0.6
870
10
2
2
value, the
MHz
75/105
Unit
k
1
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