STM32L082KB datasheet(85/132 Pages) STMICROELECTRONICS

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DS10688 Rev 7

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STM32L082xx

Electrical characteristics

109

6.3.13

I/O port characteristics

General input/output characteristics

Unless otherwise specified, the parameters given in Table 57 are derived from tests

performed under the conditions summarized in Table 23. All I/Os are CMOS and TTL

compliant.

Note:

For information on GPIO configuration, refer to application note AN4899 “STM32 GPIO

configuration for hardware settings and low-power consumption” available from the ST

website www.st.com. In addition, it is recommended to use a GPIO low-level

voltage ≤ 0.1 x VDD and a GPIO high-level voltage ≥ 0.9 x VDD, in order to have enough

margin regarding the application transient or ripple on VDD supply.

Table 57. I/O static characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

Input low level voltage

TC, FT, FTf, RST

I/Os

0.3VDD

BOOT0 pin

0.14VDD(1)

VIH

Input high level voltage

All I/Os

0.7 VDD

Vhys

I/O Schmitt trigger voltage hysteresis

(2)

Standard I/Os

10% VDD(3)

BOOT0 pin

0.01

Ilkg

Input leakage current (4)

VSS ≤VIN ≤VDD

All I/Os except for

PA11, PA12, BOOT0

and FTf I/Os

±50

VSS ≤VIN ≤VDD,

PA11 and PA12 I/Os

-50/+250

VSS ≤VIN ≤VDD

FTf I/Os

±100

VDD≤VIN ≤5 V

All I/Os except for

PA11, PA12, BOOT0

and FTf I/Os

200

VDD≤VIN ≤5 V

FTf I/Os

500

VDD≤VIN ≤5 V

PA11, PA12 and

BOOT0

µA

RPU

Weak pull-up equivalent resistor(5)

VIN = VSS

RPD

Weak pull-down equivalent resistor(5)

VIN = VDD

CIO

I/O pin capacitance

1. Guaranteed by characterization.

2. Hysteresis voltage between Schmitt trigger switching levels. Guaranteed by characterization results.

3. With a minimum of 200 mV. Guaranteed by characterization results.

4. The max. value may be exceeded if negative current is injected on adjacent pins.

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