Datasheet

Section 24 Electrical Characteristics
Rev. 3.00 Sep. 28, 2009 Page 677 of 710
REJ09B0384-0300
3. Pins P80 to P83 and PC0 to PC3 are NMOS push-pull outputs.
High levels on pins P80 to P83 and PC0 to PC3 are driven by NMOS. An external pull-up resistor
is necessary to provide high-level output from these pins when they are used as an output.
4. Supply current values are for V
IH
min = VCC – 0.2 V and V
IL
max = 0.2 V with all output pins
unloaded and the on-chip pull-up MOSs in the off state.
5. When VCC = 3.0 V, V
IH
min = VCC – 0.2 V, and V
IL
max = 0.2 V.
Table 24.3 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
SCL3 to SCL0, SDA3 to SDA0 ⎯ ⎯ 10 mA
HC7 to HC0 ⎯ ⎯ 12
Permissible output low current
(per pin)
Other output pins
I
OL
⎯ ⎯ 1.6
Total of HC7 to HC0 ⎯ ⎯ 48 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 24.3.
2. When driving a Darlington transistor or LED, always insert a current-limiting resistor in the output
line, as show in figures 24.1 and 24.2.
This LSI
Port
2 kΩ
Darlington transistor
Figure 24.1 Darlington Transistor Drive Circuit (Example)