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STM32L151RCT6A Datasheet, PDF (90/136 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC
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Electrical characteristics
STM32L151xC STM32L152xC
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 21 and
Table 44, respectively.
Unless otherwise specified, the parameters given in Table 44 are derived from tests
performed under ambient temperature and VDD supply voltage conditions summarized in
Table 14.
Table 44. I/O AC characteristics(1)
OSPEEDRx
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min Max(2) Unit
fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
- 400
kHz
- 400
00
tf(IO)out
tr(IO)out
CL = 50 pF, VDD = 2.7 V to 3.6 V
Output rise and fall time
CL = 50 pF, VDD = 1.65 V to 2.7 V
- 625
ns
- 625
fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD = 2.7 V to 3.6 V
-
2
MHz
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
1
01
tf(IO)out
tr(IO)out
CL = 50 pF, VDD = 2.7 V to 3.6 V
Output rise and fall time
CL = 50 pF, VDD = 1.65 V to 2.7 V
- 125
ns
- 250
Fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD = 2.7 V to 3.6 V
-
10
MHz
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
2
10
tf(IO)out
tr(IO)out
CL = 50 pF, VDD = 2.7 V to 3.6 V
Output rise and fall time
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
25
ns
- 125
Fmax(IO)out Maximum frequency(3)
CL = 30 pF, VDD = 2.7 V to 3.6 V
-
50
MHz
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
8
11
tf(IO)out
tr(IO)out
CL = 30 pF, VDD = 2.7 V to 3.6 V
Output rise and fall time
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
5
-
30
Pulse width of external
ns
-
tEXTIpw signals detected by the
EXTI controller
8
-
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the STM32L151xx, STM32L152xx and STM32L162xx
reference manual for a description of GPIO Port configuration register.
2. Guaranteed by design. Not tested in production.
3. The maximum frequency is defined in Figure 21.
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Doc ID 022799 Rev 3
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