ST72F521R6TA Datasheet, PDF (183/215 Pages) STMicroelectronics – 80/64-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

ST72F521, ST72521B
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.
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 97)
Output low level voltage for a high sink I/O pin
when 4 pins are sunk at same time
(see Figure 98 and Figure 100)
V_OH ²⁾
Output high level voltage for an I/O pin
when 4 pins are sourced at same time
(see Figure 99 and Figure 102)
I_IO=+5mA
1.2
I_IO=+2mA
0.5
I_IO=+20mA, T_A≤85°C
T_A≥85°C
I_IO=+8mA
1.3
1.5
V
0.6
I_IO=-5mA, T_A≤85°C V_DD-1.4
T_A≥85°C V_DD-1.6
I_IO=-2mA
V_DD-0.7
Figure 97. Typical V_OL at V_DD=5V (standard)
Figure 99. Typical V_OH at V_DD=5V
1.4
5 .5
1.2
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 .00 5
0 .0 1
Ii o(A )
0.015
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
-0.01 -0.008 -0.006 -0.004 -0.002 0
Figure 98. Typical V_OL at V_DD=5V (high-sink)
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
0.01
0.02
0.03
Iio(A)
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.
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