Datasheet

ST6200C/ST6201C/ST6203C
77/100
10.8 I/O PORT PIN CHARACTERISTICS
10.8.1 General Characteristics
Subject to general operating conditions for V
DD
, f
OSC
, and T
A
unless otherwise specified.
Figure 55. Typical R
PU
vs. V
DD
with V
IN
= V
SS
Notes:
1. Unless otherwise specified, typical data are based on T
A
=25°C and V
DD
=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. The R
PU
pull-up equivalent resistor is based on a resistive transistor. This data is based on characterization results,
not tested in production.
5. Data based on characterization results, not tested in production.
6. 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 56. Two typical Applications with unused I/O Pin
Symbol Parameter Conditions Min Typ
1)
Max Unit
V
IL
Input low level voltage
2)
0.3xV
DD
V
V
IH
Input high level voltage
2)
0.7xV
DD
V
hys
Schmitt trigger voltage hysteresis
3)
V
DD
=5V 200 400
mV
V
DD
=3.3V 200 400
I
L
Input leakage current
V
SS
≤V
IN
≤V
DD
(no pull-up configured)
0.1 1
µ
A
R
PU
Weak pull-up equivalent resistor
4)
V
IN
=V
SS
V
DD
=5V 40 110 350
k
Ω
V
DD
=3.3V 80 230 700
C
IN
I/O input pin capacitance 5 10 pF
C
OUT
I/O output pin capacitance 5 10 pF
t
f(IO)out
Output high to low level fall time
5)
C
L
=50pF
Between 10% and 90%
30
ns
t
r(IO)out
Output low to high level rise time
5)
35
t
w(IT)in
External interrupt pulse time
6)
1t
CPU
3456
VDD [V]
50
100
150
200
250
300
350
Rpu [Khom]
Ta=-40°C
Ta=25°C
Ta=95°C
Ta=125°C
10k
Ω
UNUSED I/O PORT
ST62XX
10k
Ω
UNUSED I/O PORT
ST62XX
V
DD
1