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STM32L475VG bảng dữ liệu(PDF) 165 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio
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STM32L475VG bảng dữ liệu(HTML) 165 Page - STMicroelectronics

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STM32L475xx
Electrical characteristics
181
Quad SPI characteristics
Unless otherwise specified, the parameters given in Table 84 and Table 85 for Quad SPI
are derived from tests performed under the ambient temperature, fAHB frequency and VDD
supply voltage conditions summarized in Table 22: General operating conditions, with the
following configuration:
•
Output speed is set to OSPEEDRy[1:0] = 11
•
Capacitive load C = 15 or 20 pF
•
Measurement points are done at CMOS levels: 0.5 ₓ VDD
Refer to Section 6.3.14: I/O port characteristics for more details on the input/output alternate
function characteristics.
Table 84. Quad SPI characteristics in SDR mode(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
FCK
1/t(CK)
Quad SPI clock frequency
1.71 < VDD< 3.6 V, CLOAD = 20 pF
Voltage Range 1
--
40
MHz
1.71 < VDD< 3.6 V, CLOAD = 15 pF
Voltage Range 1
--
48
2.7 < VDD< 3.6 V, CLOAD = 15 pF
Voltage Range 1
--
60
1.71 < VDD < 3.6 V CLOAD = 20 pF
Voltage Range 2
--
26
tw(CKH)
Quad SPI clock high and
low time
fAHBCLK= 48 MHz, presc=0
t(CK)/2-2
-
t(CK)/2
ns
tw(CKL)
t(CK)/2
-
t(CK)/2+2
ts(IN)
Data input setup time
Voltage Range 1
4
-
-
Voltage Range 2
3.5
-
-
th(IN)
Data input hold time
Voltage Range 1
5.5
-
-
Voltage Range 2
6.5
-
-
tv(OUT)
Data output valid time
Voltage Range 1
-
2.5
5
Voltage Range 2
-
3
5
th(OUT)
Data output hold time
Voltage Range 1
1.5
-
-
Voltage Range 2
2
-
-
1. Guaranteed by characterization results.



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