ST7PLITEU09M3TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST7PLITEU09M3TR Datasheet PDF : 115 Pages
| |||
ST7LITEU05 ST7LITEU09
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
VIL
VIH
VHYS
Input low level voltage
Input high level voltage
Schmitt trigger voltage
hysteresis 1)
-40°C to125°C
IL
Input leakage current
VSS≤VIN≤VDD
Static current consumption in-
IS
duced by each floating input Floating input mode
pin2)
RPU
CIO
tf(IO)out
tr(IO)out
tw(IT)in
Weak pull-up equivalent
resistor 3) 5)
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)
Min
Typ
0.7 x VDD
400
400
Max
0.3xVDD
Unit
V
mV
±1
µA
70
110
200
2001)
kΩ
5
pF
25
ns
25
1
tCPU
Notes:
1. Data based on characterization results, 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 57). 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 (corresponding IPU current characteristics de-
scribed in Figure 54).
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.
5. RPU not applicable on PA3 because it is multiplexed on RESET pin
Figure 52. 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.
90/115
1
Share Link: 