Datasheet

STM32L100C6, STM32L100R8/RB Electrical characteristics
DocID024295 Rev 1 73/102
Output driving current
The GPIOs (general purpose input/outputs) can sink or source up to ±8 mA, and sink or
source up to ±20 mA (with the non-standard V
OL
/V
OH
specifications given in Table 41.
in the user application, the number of I/O pins which can drive current must be limited to
respect the absolute maximum rating specified in Section 6.2:
• The sum of the currents sourced by all the I/Os on V
DD,
plus the maximum Run
consumption of the MCU sourced on V
DD,
cannot exceed the absolute maximum rating
I
VDD
(see Table 10).
• The sum of the currents sunk by all the I/Os on V
SS
plus the maximum Run
consumption of the MCU sunk on V
SS
cannot exceed the absolute maximum rating
I
VSS
(see Table 10).
Output voltage levels
Unless otherwise specified, the parameters given in Table 41 are derived from tests
performed under ambient temperature and V
DD
supply voltage conditions summarized in
Table 1 2. All I/Os are CMOS and TTL compliant.
Table 41. Output voltage characteristics
Symbol Parameter Conditions Min Max Unit
V
OL
(1)(2)
1. The I
IO
current sunk by the device must always respect the absolute maximum rating specified in Tab le 10
and the sum of I
IO
(I/O ports and control pins) must not exceed I
VSS
.
2. Tested in production.
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
I
IO
= +8 mA
2.7 V < V
DD
< 3.6 V
0.4
V
V
OH
(3)(2)
3. The I
IO
current sourced by the device must always respect the absolute maximum rating specified in
Table 10 and the sum of I
IO
(I/O ports and control pins) must not exceed I
VDD
.
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
2.4
V
OL
(1)(4)
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
I
IO
=+ 4 mA
1.8 V < V
DD
< 2.7 V
0.45
V
OH
(3)(4)
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
V
DD
-0.45
V
OL
(1)(4)
4. Based on characterization data, not tested in production.
Output low level voltage for an I/O pin
when 4 pins are sunk at same time
I
IO
= +20 mA
2.7 V < V
DD
< 3.6 V
1.3
V
OH
(3)(4)
Output high level voltage for an I/O pin
when 4 pins are sourced at same time
V
DD
-1.3