Datasheet

Electrical characteristics STM8S207xx, STM8S208xx
66/103 Doc ID 14733 Rev 12
10.3.4 Internal clock sources and timing characteristics
Subject to general operating conditions for V
DD
and T
A
. f
HSE
High speed internal RC oscillator (HSI)
Figure 18. Typical HSI frequency variation vs V
DD
at 4 temperatures
Table 33. HSI oscillator characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
HSI
Frequency 16 MHz
ACC
HSI
Accuracy of HSI oscillator
Tr i m m e d by t h e
CLK_HSITRIMR register
for given V
DD
and T
A
conditions
-1.0
(1)
1. Guaranteeed by design, not tested in production.
1.0
%
Accuracy of HSI oscillator
(factory calibrated)
V
DD
= 5 V, T
A
= 25 °C -1.5 1.5
V
DD
= 5 V,
25 °C ≤ T
A
≤ 85 °C
-2.2 2.2
2.95 V ≤ V
DD
≤ 5.5 V,
-40 °C ≤ T
A
≤ 125 °C
-3.0
(2)
2. Data based on characterization results, not tested in production
3.0
(2)
t
su(HSI)
HSI oscillator wakeup
time including calibration
1.0
(1)
µs
I
DD(HSI)
HSI oscillator power
consumption
170 250
(2)
µA
-3%
-2%
-1%
0%
1%
2%
3%
2.5 3 3.5 4 4.5 5 5.5 6
-40˚C
25˚C
85˚C
125˚C
ai15067
V
DD
(V)
% accuracy