ST72C334J4TAE STMicroelectronics, ST72C334J4TAE Datasheet - Page 129
ST72C334J4TAE
Manufacturer Part Number
ST72C334J4TAE
Description
8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces
Manufacturer
STMicroelectronics
Datasheet
1.ST72C334J4TAE.pdf
(150 pages)
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15.8 I/O PORT PIN CHARACTERISTICS
15.8.1 General Characteristics
Subject to general operating conditions for V
Figure 81. Two typical Applications with unused I/O Pin
Figure 82. Typical I
Notes:
1. Unless otherwise specified, typical data is based on T
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
characteristics, not tested in production.
5. The R
scribed in
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.
Symbol
t
t
t
f(IO)out
r(IO)out
w(IT)in
V
R
Ipu [µA]
70
60
50
40
30
20
10
V
C
V
I
I
0
hys
PU
S
IH
L
IO
IL
3.2
PU
Figure
Input low level voltage
Input high level voltage
Schmitt trigger voltage hysteresis
Input leakage current
Static current consumption
Weak pull-up equivalent resistor
I/O pin capacitance
Output high to low level fall time
Output low to high level rise time
External interrupt pulse time
pull-up equivalent resistor is based on a resistive transistor (corresponding I
Ta=-40°C
Ta=25°C
3.5
82). This data is based on characterization results, tested in production at V
V
DD
10kΩ
PU
Parameter
4
Vdd [V]
vs. V
Ta=85°C
Ta=125°C
UNUSED I/O PORT
DD
4.5
2)
2)
with V
ST72XXX
4)
7)
5
IN
6)
5)
6)
3)
=V
ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto
V
Floating input mode
V
C
Between 10% and 90%
SS
5.5
DD
SS
IN
L
= 50pF
=
< V
, f
V
OSC
A
Conditions
Figure
IN
SS
= 25°C and V
< V
, and T
DD
V
V
81). Data based on design simulation and/or technology
DD
DD
= 5V
= 3.3V
A
unless otherwise specified.
DD
10kΩ
= 5V.
0.7xV
Min
170
62
1
UNUSED I/O PORT
DD
Typ
PU
400
120
200
ST72XXX
25
25
5
current characteristics de-
DD
1)
max.
0.3xV
Max
200
250
300
±1
DD
129/150
t
Unit
mV
CPU
kΩ
µA
pF
ns
V
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