Datasheet
STM8S105xx
Electrical characteristics
positive and negative injected currents (instantaneous values). These results are based on characterization with
ΣI
INJ(PIN)
maximum current injection on four I/O port pins of the device.
Table 18: Thermal characteristics
Symbol Ratings Value Unit
T
STG
Storage temperature range -65 to 150 °C
T
J
Maximum junction temperature 150
10.3 Operating conditions
The device must be used in operating conditions that respect the parameters in the table
below. In addition, full account must be taken of all physical capacitor characteristics and
tolerances.
Table 19: General operating conditions
Symbol Parameter Conditions Min Max Unit
f
CPU
Internal CPU clock
frequency
0 16 MHz
V
DD
/
V
DD_IO
Standard operating
voltage
2.95
5.5 V
VCAP
(1)
C
EXT
: capacitance of
external capacitor
470 3300
nF
ESR of external
capacitor
at 1 MHz
(2)
- 0.3
Ohm
ESL of external
capacitor
- 15 nH
P
D
(3)
Power dissipation at TA
= 85 °C for suffix 6or
TA= 125° C for suffix 3
44 and 48-pin devices, with output on
eight standard ports, two high sink
ports and two open drain ports
simultaneously
(4)
- 443 mW
32-pin package, with output on eight
standard ports and two high sink ports
simultaneously
(4)
- 360
T
A
Ambient temperature for
6 suffix version
Maximum power dissipation -40 85 °C
Ambient temperature for
3 suffix version
Maximum power dissipation -40 125
T
J
Junction temperature
range
6 suffix version -40 105
3 suffix version -40 130
Notes:
(1)
Care should be taken when selecting the capacitor, due to its tolerance, as well as the parameter dependency
on temperature, DC bias and frequency in addition to other factors. The parameter maximum value must be
respected for the full application range.
(2)
This frequency of 1 MHz as a condition for VCAP parameters is given by design of internal regulator.
(3)
To calculate P
Dmax
(T
A
), use the formula P
Dmax
= (T
Jmax
- T
A
)/Θ
JA
(see Section 7.7: "Watchdog timers" ) with
the value for T
Jmax
given in the current table and the value for Θ
JA
given in Section 7.7: "Watchdog timers".
(4)
Refer to Section 7.7: "Watchdog timers"
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