Electrical characteristics
STM8S207xx, STM8S208xx
10.3
Operating conditions
The device must be used in operating conditions that respect the parameters in
In
addition, full account must be taken of all physical capacitor characteristics and tolerances.
Table 18.
Symbol
f
CPU
General operating conditions
Parameter
Internal CPU clock frequency
Conditions
T
A
≤
105 °C
Min
0
0
2.95
470
At 1 MHz
Max
24
16
5.5
3300
0.3
15
44, 48, 64, and 80-pin
devices, with output on 8
standard ports, 2 high sink
ports and 2 open drain ports
simultaneously
(3)
32-pin package, with output
on 8 standard ports and 2
high sink ports
simultaneously
Maximum power dissipation
Maximum power dissipation
6 suffix version
-40
-40
-40
-40
Unit
MHz
MHz
V
nF
Ohm
nH
V
DD/
V
DD_IO
Standard operating voltage
C
EXT
: capacitance of
external capacitor
(1)
VCAP
ESR of external capacitor
ESR of external capacitor
443
mW
360
P
D(2)
Power dissipation at
T
A
= 85° C for suffix 6
or T
A
= 125° C for suffix 3
Ambient temperature for 6
suffix version
T
A
Ambient temperature for 3
suffix version
Junction temperature range
85
125
105
130
(4)
°C
T
J
3 suffix version
1. Care should be taken when selecting the capacitor, due to its tolerance, as well as its dependency on
temperature, DC bias and frequency in addition to other factors.
2. To calculate P
Dmax
(T
A
), use the formula P
Dmax
= (T
Jmax
- T
A
)/Θ
(see
with the value for T
Jmax
given in
above and the value for
Θ
given in
JA
3. Refer to
for the calculation method.
4.
T
Jmax is given by the test limit. Above this value the product behavior is not guaranteed.
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