STM32F373C8 datasheet(86/131 Pages) STMICROELECTRONICS

86 / 131 page

Electrical characteristics

STM32F37xxx

86/131

DocID022691 Rev 4

Figure 19. Five volt tolerant (FT and FTf) I/O input characteristics - CMOS port

Figure 20. Five volt tolerant (FT and FTf) I/O input characteristics - TTL port

Output driving current

The GPIOs (general purpose input/outputs) can sink or source up to ± 8 mA, and sink or

source up to ± 20 mA (with a relaxed VOL/VOH).

In the user application, the number of I/O pins which can drive current must be limited to

respect the absolute maximum rating specified in Section 6.2:

•

The sum of the currents sourced by all the I/Os on all VDD_x and VDDSDx, plus the

maximum Run consumption of the MCU sourced on VDD cannot exceed the absolute

maximum rating ΣIVDD (see Table 20).

•

The sum of the currents sunk by all the I/Os on all VSS_x and VSSSD, plus the

maximum Run consumption of the MCU sunk on VSS cannot exceed the absolute

maximum rating ΣIVSS (see Table 20).

VDD (V)

2.0

0.5

VIL/VIH (V)

2.0

3.6

1.0

2.7

Area not determined

MS30257V3

VILmax

= 0.475V

-0.2

VIHmin

= 0.5V

+0.2

Based

on design

simulations

Based

on design

simulations

CMOS

standard

requirements

VIHmin

= 0.7V

CMOS standard

requirements

VILmax = 0.3V

VDD (V)

2.0

0.5

VIL/VIH (V)

2.0

3.6

1.0

2.7

Area not determined

MS30258V4

VILmax

= 0.475V

-0.2

VIHmin

= 0.5V

+0.2

Based

on design

simulations

Based

on design

simulations

TTL standard requirements VIHmin = 2 V

TTL standard requirements VILmax = 0.8 V

0.8

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