ST7232AK2B5 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7232AK2B5
STMicroelectronics
ST7232AK2B5 Datasheet PDF : 157 Pages
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ST7232A
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
Max
Unit
VOL 1)
Output low level voltage for a standard I/O pin
when 8 pins are sunk at same time
(see Figure 68)
Output low level voltage for a high sink I/O pin
when 4 pins are sunk at same time
(see Figure 69 and Figure 71)
VOH 2)
Output high level voltage for an I/O pin
when 4 pins are sourced at same time
(see Figure 70 and Figure 73)
IIO=+5mA
1.2
IIO=+2mA
0.5
IIO=+20mA, TA≤85°C
TA>85°C
IIO=+8mA
1.3
1.5
V
0.6
IIO=-5mA, TA≤85°C VDD-1.4
TA>85°C VDD-1.6
IIO=-2mA
VDD-0.7
Figure 68. Typical VOL at VDD=5V (std. ports)
1.2
Figure 70. Typical VOH at VDD=5V
5 .5
5
1
4 .5
0.8
4
0.6
0.4
0.2
0
0
Ta =14 0°C "
Ta =95 °C
Ta =25 °C
Ta =-45 °C
0 .500 5
IIOIi(om(A)
01.0 1
01.50 1 5
3 .5
V dd= 5V 1 40°C m in
3
V dd= 5v 95°C m in
V dd= 5v 25°C m in
2 .5
V dd= 5v -4 5°C m in
2
-10
-8
-6
-4
-2
0
-0.01 -0.008 -0.006 -0.004 -0.002 0
IIO I(imo A(A) )
Figure 69. Typ. VOL at VDD=5V (high-sink ports)
1
0.9
0.8
0.7
0.6
0.5
0.4
Ta= 140 °C
0.3
Ta= 95 °C
0.2
Ta= 25 °C
0.1
Ta= -45°C
0
0
10 0.01 20 0.02 30 0.03
IIO (mIioA(A) )
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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