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STM32L552VCU6PXXX Folha de dados(PDF) 271 Page - STMicroelectronics

Nome de Peças STM32L552VCU6PXXX
Descrição Electrónicos  Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 165 DMIPS, up to 512 KB Flash memory, 256 KB SRAM, SMPS
PDF  340 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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STM32L552VCU6PXXX Folha de dados(HTML) 271 Page - STMicroelectronics

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DS12737 Rev 6
271/340
STM32L552xx
Electrical characteristics
307
SPI characteristics
Unless otherwise specified, the parameters given in Table 129 for SPI are derived from tests
performed under the ambient temperature, fPCLKx frequency and supply voltage conditions
summarized in Table 27: General operating conditions.
•
Output speed is set to OSPEEDRy[1:0] = 11
•
Capacitive load C = 30 pF
•
Measurement points are done at CMOS levels: 0.5VDD
Refer to Section 5.3.15: I/O port characteristics for more details on the input/output alternate
function characteristics (NSS, SCK, MOSI, MISO for SPI).
Table 129. SPI characteristics(1)
Symbol
Parameter
Conditions
Min
Typ
Max(2)
Unit
fSCK
1/tc(SCK)
SPI clock frequency
Master mode
2.7<VDD<3.6
Voltage ranges 0/1
--
55
MHz
Master mode
1.71<VDD<3.6
Voltage ranges 0/1
44
Master transmitter mode
1.71<VDD<3.6
Voltage ranges 0/1
55
Slave receiver mode 1.71<VDD<3.6
Voltage ranges 0/1
55
Slave mode transmitter/full duplex
2.7<VDD<3.6
Voltage ranges 0/1
36
Slave mode transmitter/full duplex
1.71<VDD<3.6
Voltage ranges 0/1
23
Slave mode transmitter/full duplex
1.71<VDD<3.6
Voltage range 2
20
Slave mode transmitter/full duplex
1.08<VDD<1.32(3)
12
tsu(NSS)
NSS setup time
Slave mode, SPI presc = 2
4×Tpclk
-
-
-
th(NSS)
NSS hold time
Slave mode, SPI presc = 2
2TTpclk
-
-
tw(SCKH)
tw(SCKL)
SCK high and low
time
Master mode
Tpclk-1
Tpclk
Tpclk+1



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