ST7PLIT115BF1M3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7PLIT115BF1M3

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI

STMicroelectronics 

ST7LITE1xB

13.8 I/O PORT PIN CHARACTERISTICS

13.8.1 General Characteristics

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

Symbol

Parameter

Conditions

Min

Typ

Max

VIL Input low level voltage

VIH Input high level voltage

Vhys

Schmitt trigger voltage

hysteresis 1)

IL

Input leakage current

VSS≤VIN≤VDD

Static current consumption in-

IS

duced by each floating input Floating input mode

pin2)

VSS - 0.3

0.7xVDD

0.3xVDD

VDD + 0.3

400

±1

400

RPU

CIO

tf(IO)out

tr(IO)out

tw(IT)in

Weak pull-up equivalent

resistor3)

I/O pin capacitance

VIN=VSS

VDD=5V

VDD=3V

Output high to low level fall

time 1)

Output low to high level rise

time 1)

CL=50pF

Between 10% and 90%

External interrupt pulse time 4)

50

120

250

160

5

25

25

1

Unit

V

mV

μA

kΩ

pF

ns

tCPU

Notes:

1. Data based on validation/design results.

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 80). 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 tem-

perature values.

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

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.

Figure 80. Two typical Applications with unused I/O Pin

VDD

10kΩ

ST7XXX

UNUSED I/O PORT

10kΩ

UNUSED I/O PORT

ST7XXX

Caution: During normal operation the ICCCLK pin must be pulled-up, internally or externally

(external pull-up of 10k mandatory in noisy environment). This is to avoid entering ICC mode unexpectedly during a reset.

Note: I/O can be left unconnected if it is configured as output (0 or 1) by the software. This has the advantage of greater EMC

robustness and lower cost.

129/159

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