ST72324Lxx
I/O PORT PIN CHARACTERISTICS (Cont’d)
12.8.2 Output Driving Current
Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ. Max. Unit
VOL 1)
Output low level voltage for a standard I/O pin
when 8 pins are sunk at same time
(see Figure 67 and Figure 70)
Output low level voltage for a high sink I/O pin
when 4 pins are sunk at same time
(see Figure 68 and Figure 71)
IIO=+2mA
IIO=+10mA
0.3 0.7
0.3 0.7 V
VOH 2)
Output high level voltage for an I/O pin
when 4 pins are sourced at same time
(see Figure 69 and Figure 72 )
IIO=-2mA
VDD-0.9 2.6
Figure 67. Typical VOL at VDD=3V (std. ports)
Figure 69. Typical VOH at VDD=3V
0.45
Ta=90°C
0.40
Ta=25°C
0.35
Ta=-45°C
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
1
2
lIO (mA)
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2
Ta=90°C
Ta=25°C
Ta=-45°C
1
0
lIO(mA)
Figure 68. Typ. VOL at VDD=3V (high-sink ports)
0.50
Ta=90°C
Ta=25°C
0.40
Ta=-45°C
0.30
0.20
0.10
0.00
0
1
2
3
4
5
6
7
8
lIO (mA)
Notes:
1. The IIO current sunk must always respect the absolute maximum rating specified in Section 12.2.2 and the sum of IIO
(I/O ports and control pins) must not exceed IVSS.
2. The IIO current sourced must always respect the absolute maximum rating specified in Section 12.2.2 and the sum of
IIO (I/O ports and control pins) must not exceed IVDD. True open drain I/O pins do not have VOH.
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