Datasheet

Section 27 Electrical Characteristics
Rev. 3.00 Mar 21, 2006 page 708 of 788
REJ09B0300-0300
Table 27.3 Permissible Output Currents
Conditions: V
CC
= 2.7 V to 3.6 V, V
CC
B = 2.7 V to 5.5 V, V
SS
= 0 V, T
a
= –20 to +75°C
Item Symbol Min Typ Max Unit
SCL1, SCL0, SDA1, SDA0,
PS2AC to PS2CC,
PS2AD to PS2CD,
PA7 to PA4 (bus drive
function selected)
——10
Ports 1 to 3 — — 2
RESO ——1
Permissible output
low current (per pin)
Other output pins
I
OL
——1
mA
Total of ports 1 to 3 — — 40Permissible output
low current (total)
Total of all output pins,
including the above
∑ I
OL
——60
mA
Permissible output
high current (per pin)
All output pins –I
OH
——2 mA
Permissible output
high current (total)
Total of all output pins ∑ –I
OH
——30mA
Notes: 1. To protect chip reliability, do not exceed the output current values in table 27.3.
2. When driving a Darlington pair or LED, always insert a current-limiting resistor in the
output line, as show in figures 27.1 and 27.2.
2 kΩ
This LSI
Port
Darlington pair
Figure 27.1 Darlington Pair Drive Circuit (Example)