STM32F102X8 datasheet(54/80 Pages) STMICROELECTRONICS

54 / 80 page

Electrical characteristics

STM32F102x8, STM32F102xB

54/80

DocID15056 Rev 5

Figure 22. 5 V tolerant I/O input characteristics - CMOS port

Figure 23. 5 V tolerant 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) except PC13, PC14 and PC15 which can

sink or source up to

±3 mA. When using the GPIOs PC13 to PC15 in output mode, the

speed should not exceed 2 MHz with a maximum load of 30 pF.

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 5.2:

•

The sum of the currents sourced by all the I/Os on VDD, plus the maximum Run

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

IVDD (see Table 6).

•

The sum of the currents sunk by all the I/Os on VSS plus the maximum Run

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

IVSS (see Table 6).

VDD

1.3

3.6

CMOS

standard

requirements

VIH=0.65V

CMOS standard

requirment

V IL =0.35VDD

1.67

2.7

0.7

33.3

0.75

1.295

0.975

1.42

1.07

1.55

1.16

VIH/VIL (V)

VDD (V)

ai17279c

VIH=0.42(VDD

-2)+1

VIL=0.32(VDD

-2)+0.75

Based on design

simulations

Based on design

simulations

Tested

in production

Tested in production

Area not

determined

2.0

0.8

3.6

2.16

1.67

0.75

TTL requirement VIH=2V

TTL requirements VIL=0.8V

VIH/VIL (V)

VDD (V)

ILmax

IHmin

ai17280b

VIH=0.42*(V

-2)+1

VIL=0.32*(VDD

-2)+0.75

Based on

design simulations

Based on

design simulations

Area not

determined

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