Electrical characteristics
STM32F302xx/STM32F303xx
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 19 and Figure 20 for standard I/Os.
Figure 19. TC and TTa I/O input characteristics - CMOS port
VIL/VIH (V)
+0.398
= 0.445V
V
VIHmin 2.0
+0.07
= 0.3V
V
1.3
Area not determined
CMOS standard requirements VILmax = 0.3VDD
VILmax 0.7
0.6
VDD (V)
2.0
2.7
3.0
3.3
3.6
MS30255V2
Figure 20. TC and TTa I/O input characteristics - TTL port
VIL/VIH (V)
+0.398
TTL standard requirements VIHmin = 2 V
= 0.445V
= 0.3V
V
VIHmin 2.0
1.3
+0.07
V
Area not determined
VILmax 0.8
0.7
TTL standard requirements VILmax = 0.8 V
VDD (V)
2.0
2.7
3.0
3.3
3.6
MS30256V2
Figure 21. Five volt tolerant (FT and FTf) I/O input characteristics - CMOS port
VIL/VIH (V)
+0.2
= 0.5V
V
V
2.0
-0.2
= 0.475V
Area not determined
1.0
CMOS standard requirements VILmax = 0.3VDD
0.5
VDD (V)
2.0
3.6
MS30257V2
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Doc ID 023353 Rev 5
STMICROELECTRONICS [ ST ]
