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STM32MP157C bảng dữ liệu(PDF) 219 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Arm® dual Cortex®-A7 800 MHz Cortex®-M4 MPU, 3D GPU, TFT/DSI, 37 comm. interfaces, 29 timers, adv. analog, crypto
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STM32MP157C bảng dữ liệu(HTML) 219 Page - STMicroelectronics

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STM32MP157C/F
Electrical characteristics
238
SPI interface characteristics
Unless otherwise specified, the parameters given in Table 100 for the SPI interface are
derived from tests performed under the ambient temperature, fpclkx frequency and VDD
supply voltage conditions summarized in Table 13: General operating conditions, with the
following configuration:
•
Output speed is set to OSPEEDRy[1:0] = 11
•
Capacitive load C = 30 pF
•
Measurement points are done at CMOS levels: 0.5×VDD
•
I/O compensation cell enabled
•
HSLV activated when VDD ≤ 2.7 V
Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate
function characteristics (NSS, SCK, MOSI, MISO for SPI).
Table 99. I2C FM+ pin characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
Fmax(1)
1. The maximum frequency is defined with the following conditions:
- (Tr + Tf) ≤ ⅔T
- 45% < duty cycle < 55%.
Maximum frequency
C = 50 pF
1.71 ≤ VDD ≤ 3.6 V
-1
MHz
Tf(2)
2. The fall time is defined between 70% and 30% of the output waveform accordingl to I2C specification NXP
UM10204 rev- Oct 2012.
Output high to low level fall time
-
5
ns



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