Datasheet

STM32F101x4, STM32F101x6 Electrical characteristics
Doc ID 15058 Rev 5 53/79
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 22 and Figure 23 for standard I/Os, and
in Figure 24 and Figure 25 for 5 V tolerant I/Os.
Figure 22. Standard I/O input characteristics - CMOS port
Figure 23. Standard I/O input characteristics - TTL port
ai17277b
V
DD
(V)
1.3
0.8
2 3.6
Input range
not guaranteed
1.59
1
2.7
V
IH
=0.41(V
DD
-2)+1.3
3
0.7
CMOS standard requirement V
IH
=0.65V
DD
3.3
V
IH
/V
IL
(V)
CMOS standard requirement V
IL
=0.35V
DD
V
IL
= 0.28(V
DD
–2)+0.8
1.25
1.96
1.71
1.71
1.59
1
1.08
1.08
V
ILmax
V
IHmin
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