Table 52. I/O Ac Characteristics - STMicroelectronics STM32F042F4 Manual

Electrical characteristics
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in
52, respectively. Unless otherwise specified, the parameters given are derived from
Table
tests performed under the ambient temperature and supply voltage conditions summarized
in
Table 21: General operating
OSPEEDRy
Symbol
(1)
[1:0] value
f
max(IO)out
t
f(IO)out
t
r(IO)out
x0
f
max(IO)out
t
f(IO)out
t
r(IO)out
f
max(IO)out
t
f(IO)out
t
r(IO)out
01
f
max(IO)out
t
f(IO)out
t
r(IO)out
f
max(IO)out
11 t
f(IO)out
t
r(IO)out
76/117
conditions.

Table 52. I/O AC characteristics

Parameter
(3)
Maximum frequency
Output fall time
Output rise time
(3)
Maximum frequency
Output fall time
Output rise time
(3)
Maximum frequency
Output fall time
Output rise time
(3)
Maximum frequency
Output fall time
Output rise time
(3)
Maximum frequency
Output fall time
Output rise time
DocID025832 Rev 5
(1)(2)
Conditions
C = 50 pF, V ≥ 2 V
L DDIOx
C = 50 pF, V < 2 V
L DDIOx
C = 50 pF, V ≥ 2 V
L DDIOx
C = 50 pF, V < 2 V
L DDIOx
C = 30 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, 2 V ≤ V
L DDIOx
C = 50 pF, V < 2 V
L DDIOx
C = 30 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, 2 V ≤ V
L DDIOx
C = 50 pF, V < 2 V
L DDIOx
C = 30 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, V ≥ 2.7 V
L DDIOx
C = 50 pF, 2 V ≤ V
L DDIOx
C = 50 pF, V < 2 V
L DDIOx
STM32F042x4 STM32F042x6
Figure 24
Min Max
- 2
- 125
- 125
- 1
- 125
- 125
- 10
- 25
- 25
- 4
- 62.5
- 62.5
- 50
- 30
< 2.7 V - 20
- 10
- 5
- 8
< 2.7 V - 12
- 25
- 5
- 8
< 2.7 V - 12
- 25
and
Unit
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns