Datasheet

Electrical characteristics STM32L476xx
172/270 DS10198 Rev 8
Output voltage levels
Unless otherwise specified, the parameters given in the table below are derived from tests
performed under the ambient temperature and supply voltage conditions summarized in
Table 23: General operating conditions. All I/Os are CMOS- and TTL-compliant (FT OR TT
unless otherwise specified).
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 30 and
Table 72, respectively.
Unless otherwise specified, the parameters given are derived from tests performed under
the ambient temperature and supply voltage conditions summarized in
Table 23: General
operating conditions.
Table 71. Output voltage characteristics
(1)
Symbol Parameter Conditions Min Max Unit
V
OL
Output low level voltage for an I/O pin CMOS port
(2)
|I
IO
| = 8 mA
V
DDIOx
 2.7 V
-0.4
V
V
OH
Output high level voltage for an I/O pin V
DDIOx
-0.4 -
V
OL
(3)
Output low level voltage for an I/O pin TTL port
(2)
|I
IO
| = 8 mA
V
DDIOx
 2.7 V
-0.4
V
OH
(3)
Output high level voltage for an I/O pin 2.4 -
V
OL
(3)
Output low level voltage for an I/O pin
|I
IO
| = 20 mA
V
DDIOx
 2.7 V
-1.3
V
OH
(3)
Output high level voltage for an I/O pin V
DDIOx
-1.3 -
V
OL
(3)
Output low level voltage for an I/O pin
|I
IO
| = 4 mA
V
DDIOx
 1.62 V
-0.45
V
OH
(3)
Output high level voltage for an I/O pin V
DDIOx
-0.45 -
V
OL
(3)
Output low level voltage for an I/O pin
|I
IO
| = 2 mA
1.62 V  V
DDIOx
 1.08 V
-0.35V
DDIOx
V
OH
(3)
Output high level voltage for an I/O pin 0.65V
DDIOx
-
V
OLFM+
(3)
Output low level voltage for an FT I/O
pin in FM+ mode (FT I/O with "f"
option)
|I
IO
| = 20 mA
V
DDIOx
 2.7 V
-0.4
|I
IO
| = 10 mA
V
DDIOx
 1.62 V
-0.4
|I
IO
| = 2 mA
1.62 V  V
DDIOx
 1.08 V
-0.4
1. The I
IO
current sourced or sunk by the device must always respect the absolute maximum rating specified in Table 20:
Voltage characteristics, and the sum of the currents sourced or sunk by all the I/Os (I/O ports and control pins) must always
respect the absolute maximum ratings I
IO
.
2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.
3. Guaranteed by design.
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