ST72344K2 datasheet(215/247 Pages) STMICROELECTRONICS

215 / 247 page

ST72344xx, ST2345xx

Electrical characteristics

Doc ID 12321 Rev 6

215/247

13.9

I/O port pin characteristics

Table 106.

Electrical sensitivities

Symbol

Parameter

Conditions

Class

Static latch-up class

TA = +25°C

TA = +85°C

Table 107.

General characteristics (1)

Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

Input low level voltage (4)

VSS - 0.3

0.3xVDD

VIH

Input high level voltage (4)

0.7xVDD

VDD + 0.3

Vhys

Schmitt trigger voltage

hysteresis (4)

400

Input leakage current

VSS ≤ VIN ≤ VDD

±1

µA

Static current consumption

induced by each floating

input pin (2)

Configuration not recommended, all unused pins must be kept at a fixed voltage: using the output mode of

the I/O for example or an external pull-up or pull-down resistor (see Figure 98). Static peak current value

taken at a fixed VIN value, based on design simulation and technology characteristics, not tested in

production. This value depends on VDD and temperature values.

Floating input mode

400

RPU

Weak pull-up equivalent

resistor (3)

The RPU pull-up equivalent resistor is based on a resistive transistor.

VIN=VSS

VDD=5V

120

250

VDD=3V

160

CIO

I/O pin capacitance

tf(IO)out

Output high to low level fall

time (4)

Data based on validation/design results.

CL=50 pF

Between 10% and

90%

tr(IO)out

Output low to high level rise

time (4)

tw(IT)in

External interrupt pulse

time (5)

To generate an external interrupt, a minimum pulse width has to be applied on an I/O port pin configured

as an external interrupt source.

1tCPU

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