Electrical characteristics
STM32F050xx
Figure 20. Five volt tolerant (FT and FTf) I/O input characteristics - CMOS port
VIL/VIH (V)
2.0
1.0
0.5
CMOS standard requirements VIH min= 0.7VDD
Input range not
guaranteed
VIHmin = 0.5VDD+0.2
VILmax = 0.475VDD-0.2
CMOS standard requirements VILmax = 0.3VDD
VDD (V)
2.0
3.6
MS30257V1
Figure 21. Five volt tolerant (FT and FTf) I/O input characteristics - TTL port
VIL/VIH (V)
2.0
1.0
0.8
0.5
2.0
TTL standard requirements VIHmin = 2 V
VIHmin = 0.5VDD+0.2
Input range not
guaranteed
VILmin = 0.475VDD-0.2
TTL standard requirements VILmax = 0.8 V
VDD (V)
2.7
3.6
MS30258V1
68/97
Doc ID 023683 Rev 1