STM32F303XB Datasheet, PDF (90/148 Pages) STMicroelectronics – 128 to 256 Kbytes of Flash memory

Electrical characteristics
STM32F303xB STM32F303xC
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 23 and
Table 56, respectively.
Unless otherwise specified, the parameters given are derived from tests performed under
ambient temperature and V_DD supply voltage conditions summarized in Table 24.
Table 56. I/O AC characteristics⁽¹⁾
OSPEEDRy [1:0]
value⁽¹⁾
Symbol
Parameter
Conditions
Min Max Unit
x0
01
11
FM+
configuration⁽⁴⁾
-
f_max(IO)out
t_f(IO)out
t_r(IO)out
f_max(IO)out
t_f(IO)out
t_r(IO)out
Maximum frequency⁽²⁾
Output high to low level
fall time
Output low to high level
rise time
Maximum frequency⁽²⁾
Output high to low level
fall time
Output low to high level
rise time
C_L = 50 pF, V_DD = 2 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 3.6 V
f_max(IO)out
t_f(IO)out
t_r(IO)out
f_max(IO)out
t_f(IO)out
t_r(IO)out
Maximum frequency⁽²⁾
Output high to low level
fall time
Output low to high level
rise time
Maximum frequency⁽²⁾
Output high to low level
fall time
Output low to high level
rise time
C_L = 30 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 2.7 V
C_L = 30 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 2.7 V
C_L = 30 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2.7 V to 3.6 V
C_L = 50 pF, V_DD = 2 V to 2.7 V
C_L = 50 pF, V_DD = 2 V to 3.6 V
Pulse width of external
t_EXTIpw signals detected by the
-
EXTI controller
-
2⁽³⁾ MHz
- 125⁽³⁾
ns
- 125⁽³⁾
- 10⁽³⁾ MHz
-
25⁽³⁾
ns
-
25⁽³⁾
- 50⁽³⁾ MHz
- 30⁽³⁾ MHz
- 20⁽³⁾ MHz
-
5⁽³⁾
-
8⁽³⁾
-
12⁽³⁾
-
5⁽³⁾
ns
-
8⁽³⁾
-
12⁽³⁾
-
2⁽⁴⁾ MHz
-
12⁽⁴⁾
ns
-
34⁽⁴⁾
10⁽³⁾
-
ns
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the RM0316 reference manual for a description of
GPIO Port configuration register.
2. The maximum frequency is defined in Figure 23.
3. Guaranteed by design.
4. The I/O speed configuration is bypassed in FM+ I/O mode. Refer to the STM32F303x STM32F313xx reference manual
RM0316 for a description of FM+ I/O mode configuration.
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