Datasheet

STM8AF52/62xx, STM8AF51/61xx Electrical characteristics
Doc ID 14395 Rev 9 67/110
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 20. Typical HSI frequency vs V
DD
Table 35. HSI oscillator characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
HSI
Frequency — — 16 — MHz
ACC
HS
HSI oscillator user
trimming accuracy
Trimmed by the application
for any V
DD
and T
A
conditions
-1 — 1
%
HSI oscillator accuracy
(factory calibrated)
V
DD
= 3.0 V ≤ V
DD
≤ 5.5 V,
-40 °C ≤ T
A
≤ 150 °C
-5 — 5
t
su(HSI)
HSI oscillator wakeup time — — — 2
(1)
1. Guaranteed by characterization, not tested in production
µs
-3%
-2%
-1%
0%
1%
2%
3%
2.533.544.555.56
V
DD
[V]
HSI frequency variation [%]
-40°C
25°C
85°C
125°C