STM32F051T8 查看數據表（PDF） - STMicroelectronics

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STM32F051T8

ARM®-based 32-bit MCU, 16 to 64 KB Flash, 11 timers, ADC, DAC and communication interfaces, 2.0-3.6 V

STMicroelectronics 

STM32F051x4 STM32F051x6 STM32F051x8

Electrical characteristics

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 VDDIOx, plus the maximum

consumption of the MCU sourced on VDD, cannot exceed the absolute maximum rating

ΣIVDD (see Table 17: Voltage characteristics).

• The sum of the currents sunk by all the I/Os on VSS, plus the maximum consumption of

the MCU sunk on VSS, cannot exceed the absolute maximum rating ΣIVSS (see

Table 17: Voltage characteristics).

Output voltage levels

Unless otherwise specified, the parameters given in the table below are derived from tests

performed under the ambient temperature and supply voltage conditions summarized in

Table 20: General operating conditions. All I/Os are CMOS- and TTL-compliant (FT, TTa or

TC unless otherwise specified).

Table 49. Output voltage characteristics(1)

Symbol

Parameter

Conditions

Min

Max Unit

VOL

VOH

VOL

VOH

VOL(3)

VOH(3)

VOL(3)

VOH(3)

Output low level voltage for an I/O pin

Output high level voltage for an I/O pin

Output low level voltage for an I/O pin

Output high level voltage for an I/O pin

Output low level voltage for an I/O pin

Output high level voltage for an I/O pin

Output low level voltage for an I/O pin

Output high level voltage for an I/O pin

VOLFm+(3)

Output low level voltage for an FTf I/O pin in

Fm+ mode

CMOS port(2)

|IIO| = 8 mA

VDDIOx ≥ 2.7 V

TTL port(2)

|IIO| = 8 mA

VDDIOx ≥ 2.7 V

|IIO| = 20 mA

VDDIOx ≥ 2.7 V

|IIO| = 6 mA

|IIO| = 20 mA

VDDIOx ≥ 2.7 V

|IIO| = 10 mA

-

0.4

V

VDDIOx–0.4

-

-

0.4

V

2.4

-

-

1.3

V

VDDIOx–1.3

-

-

0.4

V

VDDIOx–0.4

-

-

0.4 V

-

0.4 V

1.

The IIO

Voltage

respect

current sourced or sunk by the

characteristics, and the sum of

the absolute maximum ratings

device must

ΣthIeIOc.urrents

always respect the

sourced or sunk by

absolute maximum rating

all the I/Os (I/O ports and

specified in Table

control pins) must

17:

always

2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.

3. Data based on characterization results. Not tested in production.

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