Datasheet

DocID14771 Rev 15 69/121
STM8S105x4/6 Electrical characteristics
90
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)
Figure 21. Typical HSI accuracy @ V
DD
= 5 V vs 5 temperatures
Table 33. HSI oscillator characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
HSI
Frequency - - 16 - MHz
ACC
HS
Accuracy of HSI oscillator
User-trimmed with
CLK_HSITRIMR register for
given V
DD
and T
A
conditions
(1)
1. Refer to application note.
--1
(2)
2. Guaranteed by design, not tested in production.
%
HSI oscillator accuracy
(factory calibrated)
V
DD
V,
T
A
 25 °C
(3)
3. Data based on characterization results, not tested in production.
-1.0 - 1.0
V
DD
= 5 V, 
-25°C T
A
 85 °C
-2.0 - 2.0
2.95 V V
DD
 5.5 V, 
-40°C T
A
 125 °C
-3.0
(3)
-3.0
(3)
t
su(HSI)
HSI oscillator wakeup
time including calibration
---1.0
(2)
µs
I
DD(HSI)
HSI oscillator power
consumption
- - 170 250
(3)
µA
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