Datasheet

DocID13587 Rev 16 65/105
STM32F103x8, STM32F103xB Electrical characteristics
104
Figure 28. 5 V tolerant I/O input characteristics - CMOS port
Figure 29. 5 V tolerant I/O input characteristics - TTL port
VDD
1.3
2 3.6
CMOS standard requirements V
IH
=0.65V
DD
CMOS standard requirment V
IL
=0.35V
DD
1.67
1
2.7
0.7
33.3
1
0.75
1.295
0.975
1.42
1.07
1.55
1.16
V
IH
/V
IL
(V)
V
DD
(V)
ai17279c
V
IH
=0.42(V
DD
-2)+1
V
IL
=0.32(V
DD
-2)+0.75
Based on design simulations
Based on design simulations
Tested in production
Tested in production
Area not
determined
2.0
0.8
2 3.62.16
1.67
1
0.75
TTL requirement V
IH
=2V
TTL requirements V
IL
=0.8V
V
IH
/V
IL
(V)
V
DD
(V)
7
ILmax
7
IHmin
ai17280b
V
IH
=0.42*(V
DD
-2)+1
V
IL
=0.32*(V
DD
-2)+0.75
Based on design simulations
Based on design simulations
Area not
determined