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CD00237391 Datasheet, PDF (98/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM
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Electrical characteristics
STM32F20xxx
4. Based on characterization data, not tested in production.
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 36 and
Table 46, respectively.
Unless otherwise specified, the parameters given in Table 46 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
in Table 12.
Table 46. I/O AC characteristics(1)(2)
OSPEEDRy
[1:0] bit
value(1)
Symbol
Parameter
fmax(IO)out Maximum frequency(3)
00
tf(IO)out
Output high to low level fall
time
tr(IO)out
Output low to high level rise
time
fmax(IO)out Maximum frequency(3)
01
tf(IO)out
Output high to low level fall
time
tr(IO)out
Output low to high level rise
time
fmax(IO)out Maximum frequency(3)
10
tf(IO)out
Output high to low level fall
time
tr(IO)out
Output low to high level rise
time
Conditions
Min
CL = 50 pF, VDD > 2.70 V
-
CL = 50 pF, VDD > 1.8 V
-
CL = 10 pF, VDD > 2.70 V
-
CL = 10 pF, VDD > 1.8 V
-
-
CL = 50 pF, VDD = 1.8 V to
3.6 V
-
CL = 50 pF, VDD > 2.70 V
-
CL = 50 pF, VDD > 1.8 V
-
CL = 10 pF, VDD > 2.70 V
-
CL = 10 pF, VDD > 1.8 V
-
CL = 50 pF, VDD < 2.7 V
-
CL = 10 pF, VDD > 2.7 V
-
CL = 50 pF, VDD < 2.7 V
-
CL = 10 pF, VDD > 2.7 V
-
CL = 40 pF, VDD > 2.70 V
-
CL = 40 pF, VDD > 1.8 V
-
CL = 10 pF, VDD > 2.70 V
-
CL = 10 pF, VDD > 1.8 V
-
CL = 50 pF, 2.4 < VDD < 2.7 V -
CL = 10 pF, VDD > 2.7 V
-
CL = 50 pF, 2.4 < VDD < 2.7 V -
CL = 10 pF, VDD > 2.7 V
-
Typ Max Unit
-
2
-
2
MHz
- TBD
- TBD
- TBD
ns
- TBD
-
25
- 12.5(4)
MHz
-
50(4)
- TBD
- TBD
- TBD
ns
- TBD
- TBD
-
50(4)
-
25
MHz
- 100(4)
- TBD
- TBD
- TBD ns
- TBD
- TBD
98/177
Doc ID 15818 Rev 9
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