Hardware manual

Rev. 3.0, 09/98, page 280 of 361
Table 16.4 Allowable Output Current Values (5V version)
Conditions: V
CC
= AV
CC
= 5.0V ±10%, V
SS
= AV
SS
= 0V,
Ta = −20 to 75°C (regular specifications),
Ta = −40 to 85°C (wide-range specifications)
Item Symbol Min Typ Max Unit
Ports 1 and 2 10 mA
Allowable output Low current (per pin)
Other output pins
I
OL
2.0 mA
Ports 1 and 2, total 80 mAAllowable output Low current (total)
Total of all output
Σ
IOL
120 mA
Allowable output High current (per pin) All output pins −I
OH
2.0 mA
Allowable output High current (total) Total of all output Σ−I
OH
40 mA
Table 16.5 Allowable Output Current Values (3V version)
Conditions: V
CC
= 3.0V ±10%, AV
CC
= 5.0V ±10%, V
SS
= AV
SS
= 0V, Ta = −20 to 75°C
Item Symbol Min Typ Max Unit
Ports 1 and 2 2mA
Allowable output Low current (per pin)
Other output pins
I
OL
1mA
Ports 1 and 2, total 40 mAAllowable output Low current (total)
Total of all output
ΣI
OL
60 mA
Allowable output High current (per pin) All output pins −I
OH
2mA
Allowable output High current (total) Total of all output Σ−I
OH
30 mA
Note: To avoid degrading the reliability of the chip, be careful not to exceed the output current
values in tables 16.4 and 16.5. In particular, when driving a Darlington transistor pair or
LED directly, be sure to insert a current-limiting resistor in the output path. See figures 16.1
and 16.2.