ST72622L2M1L View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72622L2M1L

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

STMicroelectronics 

ST7262

12.8 I/O PORT PIN CHARACTERISTICS

12.8.1 General Characteristics

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

Symbol

Parameter

Conditions

Min

Typ 1)

Max

Unit

VIL Input low level voltage

VIH Input high level voltage

VIN Input voltage

True Open Drain I/O pins

Other I/O pins

0.7xVDD

VSS

Vhys Schmitt trigger voltage hysteresis

400

IL

Input leakage current

VSS≤VIN≤VDD

IS

Static current consumption 2)

Floating input mode

RPU Weak pull-up equivalent resistor 3) VIN=VSS

VDD=5V

50

80

CIO I/O pin capacitance

5

tf(IO)out Output high to low level fall time

CL=50pF

25

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

25

tw(IT)in External interrupt pulse time 4)

1

0.3xVDD

6.0

VDD

±1

200

150

V

V

mV

µA

kΩ

pF

ns

tCPU

Figure 68. Two typical Applications with unused I/O Pin

VDD

10kΩ

ST72XXX

UNUSED I/O PORT

10kΩ

UNUSED I/O PORT

ST72XXX

Figure 69. Typical IPU vs. VDD with VIN=VSS

0.0

-10.0

-20.0

-30.0

-40.0

-50.0

-60.0

-70.0

-80.0

-90.0

3.0 3.5 4.0 4.5 5.0 5.5 6.0

Vdd (V)

Figure 70. Typical RPU vs. VDD with VIN=VSS

180

160

140

120

100

80

60

40

20

0

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Vdd (V)

Notes:

1. Unless otherwise specified, typical data are based on TA=25°C and VDD=5V, not tested in production.

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 68). Data based on design simulation and/or technology

characteristics, not tested in production.

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

scribed in Figure 69). This data is based on characterization results.

4. 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.

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