Datasheet

Electrical characteristics
STM8S105xx
10.3.4 Internal clock sources and timing characteristics
Subject to general operating conditions for V
DD
and T
A
.
High speed internal RC oscillator (HSI)
Table 34: HSI oscillator characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
HSI
Frequency 16 MHz
ACC
HSI
Accuracy of HSI
oscillator
User-trimmed with
CLK_HSITRIMR register for given
V
DD
and T
A
conditions
(1)
1.0
(2)
%
Accuracy of HSI
oscillator (factory
calibrated)
V
DD
= 5 V, T
A
= 25°C
(3)
-1.0 1.0
V
DD
= 5 V, 25 °C ≤ T
A
≤ 85 °C -2.0 2.0
2.95 ≤ V
DD
≤ 5.5 V,-40 °C ≤ T
A
≤
125 °C
-3.0
(3)
3.0
(3)
t
su(HSI)
HSI oscillator wake-up
time including
calibration
1.0
(2)
µs
I
DD(HSI)
HSI oscillator power
consumption
170 250
(3)
µA
Notes:
(1)
Refer to application note.
(2)
Guaranteed by design, not tested in production.
(3)
Data based on characterization results, not tested in production.
Figure 21: Typical HSI accuracy at VDD = 5 V vs 5 temperatures
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