Datasheet

Electrical characteristics STM32F103x8, STM32F103xB
64/105 DocID13587 Rev 16
All I/Os are CMOS and TTL compliant (no software configuration required). Their
characteristics cover more than the strict CMOS-technology or TTL parameters. The
coverage of these requirements is shown in Figure 26 and Figure 27 for standard I/Os, and
in Figure 28 and Figure 29 for 5 V tolerant I/Os.
Figure 26. Standard I/O input characteristics - CMOS port
Figure 27. Standard I/O input characteristics - TTL port
ai17277c
V
DD
(V)
1.3
0.8
2 3.6
2.7 3
0.7
CMOS standard requirement V
IH
=0.65V
DD
3.3
V
IH
/V
IL
(V)








7
ILmax
7
IHmin
Tested in production
V
DD
-2)+0.8
=0.28(V
IL
CMOS standard requirement V
IL
=0.35V
DD
V
IH
=0.41(V
DD
-2)+1.3
Tested in production
Based on design simulations
Based on design simulations
Area not
determined
ai17278b
2
3.6
V
IH
/V
IL
(V)
1.3
2.0
0.8
2.16
TTL requirements V
IH
=2V
V
IH
=0.41(V
DD
-2)+1.3
V
IL
=0.28(V
DD
-2)+0.8
TTL requirements V
IL
=0.8V
1.96
1.25
V
DD
(V)
7
ILmax
7
IHmin
Based on design simulations
Based on design simulations
Area not
determined