HD64F3437TF16 Datasheet, PDF (613/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Table 23.18 Allowable Output Current Values
Conditions: V_CC = 3.0 V to 5.5 V, V_CCB = 3.0 V to 5.5 V, AV_CC = 3.0 V to 5.5 V,
AV_ref = 3.0 V to AV_CC, V_SS = AV_SS = 0 V, Ta = –20˚C to +75˚C (regular
specifications), Ta = –40°C to +85°C (wide-range specifications)
Item
Symbol Min Typ Max Unit
Allowable output low
current (per pin)
SCL, SDA, PA₄ to PA₇ I_OL
(bus drive selection)
—
—
10
mA
Ports 1 and 2
—
—
2
RESO
—
—
1
Other output pins
—
—
1
Allowable output low
Ports 1 and 2, total
ΣI_OL
current (total)
Total of all output
—
—
40
mA
—
—
60
Allowable output high
current (per pin)
All output pins
–I _OH
—
—
2
mA
Allowable output high Total of all output
Σ–I_OH
—
—
30
mA
current (total)
Note: To avoid degrading the reliability of the chip, be careful not to exceed the output current
values in table 23.19. 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 23.4 and 23.5.
H8/3437
Port
2 kΩ
Darlington
transistor
Figure 23.4 Example of Circuit for Driving a Darlington Transistor (5-V Version)
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