STM32L4P5CEU6 datasheet(240/311 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L4P5xx

240/311

DS12903 Rev 2

SPI characteristics

Unless otherwise specified, the parameters given in Table 96 for SPI are derived from tests

performed under the ambient temperature, fPCLKx frequency and supply voltage conditions

summarized in Table 21: General operating conditions.

•

Output speed is set to OSPEEDRy[1:0] = 11

•

Capacitive load C = 30 pF

•

Measurement points are done at CMOS levels: 0.5 x VDD

Refer to Section 6.3.14: I/O port characteristics for more details on the input/output alternate

function characteristics (NSS, SCK, MOSI, MISO for SPI).

Table 96. SPI characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max(2)

Unit

fSCK

1/tc(SCK)

SPI clock frequency

Master mode

2.7 V < VDD < 3.6 V

Voltage Range V1

MHz

Master mode

1.71 V < VDD < 3.6 V

Voltage Range V1

Master transmitter mode

1.71 V < VDD < 3.6 V

Voltage Range V1

Slave receiver mode

1.71 V < VDD < 3.6 V

Voltage Range V1

Slave mode transmitter/full duplex

2.7 V < VDD < 3.6 V

Voltage Range V1

Slave mode transmitter/full duplex

1.71 V < VDD < 3.6 V

Voltage Range V1

1.71 V < VDD < 3.6 V

Voltage Range V2

1.08 V < VDD < 1.32 V(3)

tsu(NSS) NSS setup time

Slave mode, SPI prescaler = 2

4ₓTPCLK

th(NSS) NSS hold time

Slave mode, SPI prescaler = 2

2ₓTPCLK

tw(SCKH)

tw(SCKL)

SCK high and low time

Master mode

TPCLK-1

TPCLK

TPCLK+1

tsu(MI)

Data input setup time

Master mode

1.5

tsu(SI)

Slave mode

th(MI)

Data input hold time

Master mode

5.5

th(SI)

Slave mode

ta(SO)

Data output access time Slave mode

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