Datasheet
DocID17943 Rev 6 99/134
STM8L15xx8, STM8L15xR6 Electrical parameters
121
Table 40. Output driving current (true open drain ports)
I/O
Type
Symbol Parameter Conditions Min. Max. Unit
Open drain
V
OL
(1)
Output low level voltage for an I/O pin
I
IO
= +3 mA,
V
DD
= 3.0 V
0.45
V
I
IO
= +1 mA,
V
DD
= 1.8 V
0.45
1. The I
IO
current sunk must always respect the absolute maximum rating specified in Ta ble 16 and the sum
of I
IO
(I/O ports and control pins) must not exceed I
VSS
.
Table 41. Output driving current (PA0 with high sink LED driver capability)
I/O
Type
Symbol Parameter Conditions Min. Max. Unit
IR
V
OL
(1)
Output low level voltage for an I/O pin
I
IO
= +20 mA,
V
DD
= 2.0 V
0.45 V
1. The I
IO
current sunk must always respect the absolute maximum rating specified in Ta ble 16 and the sum
of I
IO
(I/O ports and control pins) must not exceed I
VSS
.
Figure 29. Typical V
OL
@ V
DD
= 3.0 V (high sink
ports)
Figure 30. Typical V
OL
@ V
DD
= 1.8 V (high sink
ports)
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Figure 31. Typical V
OL
@ V
DD
= 3.0 V (true open
drain ports)
Figure 32. Typical V
OL
@ V
DD
= 1.8 V (true open
drain ports)
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