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STM32F051K4U6 bảng dữ liệu(PDF) 86 Page - STMicroelectronics

tên linh kiện STM32F051K4U6
Giải thích chi tiết về linh kiện  Low- and medium-density advanced ARM??based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F051K4U6 bảng dữ liệu(HTML) 86 Page - STMicroelectronics

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STM32F051x
Electrical characteristics
Doc ID 022265 Rev 3
87/105
Figure 25.
I2C bus AC waveforms and measurement circuit
1.
Measurement points are done at CMOS levels: 0.3 VDD and 0.7 VDD.
SPI/I2S characteristics
Unless otherwise specified, the parameters given in Table 66 for SPI or in Table 67 for I2S
are derived from tests performed under ambient temperature, fPCLKx frequency and VDD
supply voltage conditions summarized in Table 20.
Refer to Section 6.3.13: I/O port characteristics for more details on the input/output alternate
function characteristics (NSS, SCK, MOSI, MISO for SPI and WS, CK, SD for I2S).
Table 65.
I2C analog filter characteristics(1)
1.
Guaranteed by design, not tested in production.
Symbol
Parameter
Min
Max
Unit
tSP
Pulse width of spikes that are
suppressed by the analog filter
50
260
ns
Ω
Ω
Table 66.
SPI characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
fSCK
1/tc(SCK)
SPI clock frequency
Master mode
-
18
MHz
Slave mode
-
18
tr(SCK)
tf(SCK)
SPI clock rise and fall
time
Capacitive load: C = 15 pF
-
6
ns



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