Datasheet

ST72321Rx ST72321ARx ST72321Jx
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I/O PORT PIN CHARACTERISTICS (Cont’d)
12.8.2 Output Driving Current
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
unless otherwise specified.
Figure 83. Typical V
OL
at V
DD
=5V (standard)
Figure 84. Typical V
OL
at V
DD
=5V (high-sink)
Figure 85. Typical V
OH
at V
DD
=5V
Notes:
1. The I
IO
current sunk must always respect the absolute maximum rating specified in Section 12.2.2 and the sum of I
IO
(I/O ports and control pins) must not exceed I
VSS
.
2. The I
IO
current sourced must always respect the absolute maximum rating specified in Section 12.2.2 and the sum of
I
IO
(I/O ports and control pins) must not exceed I
VDD
. True open drain I/O pins do not have V
OH
.
Symbol Parameter Conditions Min Max Unit
V
OL
1)
Output low level voltage for a standard I/O pin
when 8 pins are sunk at same time
(see Figure 83)
V
DD
=5V
I
IO
=+5mA 1.2
V
I
IO
=+2mA 0.5
Output low level voltage for a high sink I/O pin
when 4 pins are sunk at same time
(see Figure 84 and Figure 86)
I
IO
=+20mA,T
A
≤ 85°C
T
A
≥85°C
1.3
1.5
I
IO
=+8mA 0.6
V
OH
2)
Output high level voltage for an I/O pin
when 4 pins are sourced at same time
(see Figure 85 and Figure 88)
I
IO
=-5mA, T
A
≤ 85°C
T
A
≥85°C
V
DD
-1.4
V
DD
-1.6
I
IO
=-2mA V
DD
-0.7
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 0.005 0.01 0.015
Iio(A )
Vol (V) at Vdd=5V
Ta =14 0°C "
Ta =95 °C
Ta =25 °C
Ta = -45 °C
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 0.01 0.02 0.03
Ii o (A )
Vol(V) at Vdd=5V
Ta= 140 °C
Ta= 95 °C
Ta= 25 °C
Ta= -45°C
2
2.5
3
3.5
4
4.5
5
5.5
-0.01 -0.008 -0.006 -0.004 -0.002 0
Vdd-Voh (V) at Vdd=5V
Vdd= 5V 140°C m in
Vdd= 5v 95°C min
Vdd= 5v 25°C min
Vdd= 5v -45°C min