Table 21-3 Permissible Output Currents
Conditions: V
CC
= 2.7 V to 5.5 V, AV
CC
= 2.7 V to 5.5 V, V
REF
= 2.7 V to AV
CC
,
V
SS
= AV
SS
= 0 V, T
a
= –20°C to +75°C (regular specifications),
T
a
= –40°C to +85°C (wide-range specifications)
Item
Symbol
Min
Typ
Max
Unit
Ports 1, 2, 5, and B
I
OL
—
—
10
mA
Other output pins
—
—
2.0
mA
Permissible output
Total of 28 pins in
Σ
I
OL
—
—
80
mA
low current (total)
ports 1, 2, 5, and B
Total of all output pins,
—
—
120
mA
including the above
Permissible output
All output pins
I
OH
—
—
2.0
mA
high current (per pin)
Permissible output
Total of all output pins
Σ
I
OH
—
—
40
mA
high current (total)
Notes: 1. To protect chip reliability, do not exceed the output current values in table 21-3.
2. When driving a darlington pair or LED, always insert a current-limiting resistor in the
output line, as shown in figures 21-1 and 21-2.
Permissible output
low current (per pin)
662
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