STM32F031X4 datasheet(64/106 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F031x4 STM32F031x6

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DocID025743 Rev 4

6.3.14

I/O port characteristics

General input/output characteristics

Unless otherwise specified, the parameters given in Table 46 are derived from tests

performed under the conditions summarized in Table 18: General operating conditions. All

I/Os are designed as CMOS- and TTL-compliant (except BOOT0).

Table 45. I/O current injection susceptibility

Symbol

Description

Functional

susceptibility

Unit

Negative

injection

Positive

injection

IINJ

Injected current on BOOT0

–0

Injected current on all FT and FTf pins

–5

Injected current on all TTa, TC and RESET pins

–5

Table 46. I/O static characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

Low level input

voltage

TC and TTa I/O

0.3 VDDIOx+0.07(1)

FT and FTf I/O

0.475 VDDIOx–0.2(1)

BOOT0

0.3 VDDIOx–0.3(1)

All I/Os except

BOOT0 pin

0.3 VDDIOx

VIH

High level input

voltage

TC and TTa I/O

0.445 VDDIOx+0.398(1)

FT and FTf I/O

0.5 VDDIOx+0.2(1)

BOOT0

0.2 VDDIOx+0.95(1)

All I/Os except

BOOT0 pin

0.7 VDDIOx

Vhys

Schmitt trigger

hysteresis

TC and TTa I/O

200(1)

FT and FTf I/O

100(1)

BOOT0

300(1)

Ilkg

Input leakage

current(2)

TC, FT and FTf I/O

TTa in digital mode

VSS ≤ VIN ≤ VDDIOx

± 0.1

µA

TTa in digital mode

VDDIOx ≤ VIN ≤ VDDA

TTa in analog mode

VSS ≤ VIN ≤ VDDA

± 0.2

FT and FTf I/O

VDDIOx ≤ VIN ≤ 5 V

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