Datasheet

DS6329 Rev 16 109/184
STM32F20xxx Electrical characteristics
183
01
f
max(IO)out
Maximum frequency
(2)
C
L
= 50 pF, V
DD >
2.70 V - - 25
MHz
C
L
= 50 pF, V
DD >
1.8 V - - 12.5
C
L
= 10 pF, V
DD >
2.70 V - - 50
(3)
C
L
= 10 pF, V
DD >
1.8 V - - 20
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 50 pF, V
DD
>2.7 V - - 10
ns
C
L
= 50 pF, V
DD >
1.8 V - - 20
C
L
= 10 pF, V
DD >
2.70 V - - 6
C
L
= 10 pF, V
DD >
1.8 V - - 10
10
f
max(IO)out
Maximum frequency
(2)
C
L
= 40 pF, V
DD >
2.70 V - - 25
MHz
C
L
= 40 pF, V
DD >
1.8 V - - 20
C
L
= 10 pF, V
DD >
2.70 V - - 100
(3)
C
L
= 10 pF, V
DD >
1.8 V - - 50
(3)
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 40 pF, V
DD >
2.70 V - - 6
ns
C
L
= 40 pF, V
DD >
1.8 V - - 10
C
L
= 10 pF, V
DD >
2.70 V - - 4
C
L
= 10 pF, V
DD >
1.8 V - -3 6
11
f
max(IO)out
Maximum frequency
(2)
C
L
= 30 pF, V
DD >
2.70 V - - 100
(3)
MHz
C
L
= 30 pF, V
DD >
1.8 V - - 50
(3)
C
L
= 10 pF, V
DD >
2.70 V - - 120
(3)
C
L
= 10 pF, V
DD >
1.8 V - - 100
(3)
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 30 pF, V
DD >
2.70 V - - 4
ns
C
L
= 30 pF, V
DD >
1.8 V - - 6
C
L
= 10 pF, V
DD >
2.70 V - - 2.5
C
L
= 10 pF, V
DD >
1.8 V - - 4
-t
EXTIpw
Pulse width of external
signals detected by the
EXTI controller
-10--ns
1. The I/O speed is configured using the OSPEEDRy[1:0] bits. Refer to the STM32F20/21xxx reference manual for a
description of the GPIOx_SPEEDR GPIO port output speed register.
2. The maximum frequency is defined in Figure 39.
3. For maximum frequencies above 50 MHz and V
DD
above 2.4 V, the compensation cell must be used.
Table 48. I/O AC characteristics
(1)
(continued)
OSPEEDRy
[1:0] bit
value
(1)
Symbol Parameter Conditions Min Typ Max Unit
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