ST72334J4TC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72334J4TC

8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces

STMicroelectronics 

ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto

15.8 I/O PORT PIN CHARACTERISTICS

15.8.1 General Characteristics

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

Symbol

Parameter

Conditions

Min

Typ 1)

Max

VIL

Input low level voltage 2)

VIH

Input high level voltage 2)

Vhys Schmitt trigger voltage hysteresis 3)

0.7xVDD

400

0.3xVDD

IL

Input leakage current

VSS < VIN < VDD

±1

IS

Static current consumption 4)

Floating input mode

200

RPU

Weak pull-up equivalent resistor 5) VIN = VSS

VDD = 5V

VDD = 3.3V

62

170

120

200

250

300

CIO I/O pin capacitance

5

tf(IO)out Output high to low level fall time 6) CL = 50pF

25

tr(IO)out Output low to high level rise time 6) Between 10% and 90%

25

tw(IT)in External interrupt pulse time 7)

1

Unit

V

mV

µA

kΩ

pF

ns

tCPU

Figure 81. Two typical Applications with unused I/O Pin

VDD

10kΩ

ST72XXX

UNUSED I/O PORT

10kΩ UNUSED I/O PORT

ST72XXX

Figure 82. Typical IPU vs. VDD with VIN=VSS

Ipu [µA]

70

60

Ta=-40°C

Ta=85°C

Ta=25°C

Ta=125°C

50

40

30

20

10

0

3.2

3.5

4

4.5

5

5.5

Vdd [V]

Notes:

1. Unless otherwise specified, typical data is based on TA = 25°C and VDD = 5V.

2. Data based on characterization results, not tested in production.

3. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.

4. 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 81). Data based on design simulation and/or technology

characteristics, not tested in production.

5. The RPU pull-up equivalent resistor is based on a resistive transistor (corresponding IPU current characteristics de-

scribed in Figure 82). This data is based on characterization results, tested in production at VDD max.

6. Data based on characterization results, not tested in production.

7. 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.

129/150

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