Datasheet

Electrical characteristics STM32F20xxx
106/184 DS6329 Rev 16
All I/Os are CMOS and TTL compliant (no software configuration required). Their
characteristics cover more than the strict CMOS-technology or TTL parameters. The
coverage of these requirements for FT I/Os is shown in
Figure 38.
R
PU
Weak pull-up
equivalent
resistor
(6)
All pins
except for
PA10/PB12
(OTG_FS_ID,
OTG_HS_ID)
V
IN
= V
SS
30 40 50
kΩ
PA10/PB12
(OTG_FS_ID,
OTG_HS_ID)
- 7 10 14
R
PD
Weak pull-down
equivalent
resistor
(7)
All pins
except for
PA10/PB12
(OTG_FS_ID,
OTG_HS_ID)
V
IN
= V
DD
30 40 50
PA10/PB12
(OTG_FS_ID,
OTG_HS_ID)
- 7 10 14
C
IO
(8)
I/O pin capacitance - - 5 - pF
1. Guaranteed by design, not tested in production.
2. Guaranteed by tests in production.
3. With a minimum of 200 mV.
4. Leakage could be higher than the maximum value, if negative current is injected on adjacent pins, Refer to Table 45: I/O
current injection susceptibility
5. To sustain a voltage higher than VDD +0.3 V, the internal pull-up/pull-down resistors must be disabled. Leakage could be
higher than the maximum value, if negative current is injected on adjacent pins.Refer to Table 45: I/O current injection
susceptibility
6. Pull-up resistors are designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the
series resistance is minimum (~10% order).
7. Pull-down resistors are designed with a true resistance in series with a switchable NMOS. This NMOS contribution to the
series resistance is minimum (~10% order).
8. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization, not tested in production.
Table 46. I/O static characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit
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