Datasheet

Rev. 3.00, 03/04, page 787 of 830
Table 25.3 Permissible Output Currents
Conditions: VCC = 3.0 V to 3.6 V, AVCC = 3.0 V to 3.6 V,
AVref = 3.0 V to AVCC, VSS = AVSS = 0 V
Item Symbol Min. Typ. Max. Unit
SCL5 to SCL0, SDA5 to SDA0   10 mA
Ports 1, 2, and 3   5
Permissible output low current
(per pin)
Other output pins
I
OL
  1.6
Total of ports 1, 2, and 3   80 Permissible output low current
(total)
Total of all output pins,
including the above
∑I
OL
  90
Permissible output high
current (per pin)
All output pins –I
OH
  2
Permissible output high
current (total)
Total of all output pins ∑–I
OH
  60
Notes: 1. To protect LSI reliability, do not exceed the output current values in table 25.3.
2. When driving a Darlington transistor or LED, always insert a current-limiting resistor in the output
line, as show in figures 25.1 and 25.2.
This LSI
Port
2 kΩ
Darlington transistor
Figure 25.1 Darlington Transistor Drive Circuit (Example)
This LSI
Ports 1 to 3
LED
600 Ω
Figure 25.2 LED Drive Circuit (Example)