STM32WB35CC datasheet(160/193 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32WB55xx STM32WB35xx

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DS11929 Rev 11

Table 93. SPI characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fSCK

1/tc(SCK)

SPI clock frequency

Master mode



1.65 < VDD < 3.6 V

Voltage Range 1

MHz

Master transmitter mode



1.65 < VDD < 3.6 V

Voltage Range 1

Slave receiver mode



1.65 < VDD < 3.6 V

Voltage Range 1

Slave mode transmitter/full duplex



2.7 < VDD < 3.6 V

Voltage Range 1

32(2)

Slave mode transmitter/full duplex



1.65 < VDD < 3.6 V

Voltage Range 1

20.5(2)

Voltage Range 2

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 - 1.5

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

th(SI)

Slave mode

ta(SO)

Data output access time

Slave mode

tdis(SO) Data output disable time

tv(SO)

Data output valid time

Slave mode 2.7 < VDD < 3.6 V

Voltage Range 1

-14.5

15.5

Slave mode 1.65 < VDD < 3.6 V

Voltage Range 1

-15.5

Slave mode 1.65 < VDD < 3.6 V

Voltage Range 2

-19.5

tv(MO)

Master mode (after enable edge)

2.5

th(SO)

Data output hold time

Slave mode (after enable edge)

th(MO)

Master mode (after enable edge)

1. Guaranteed by characterization results.

2. Maximum frequency in Slave transmitter mode is determined by the sum of tv(SO) and tsu(MI), which has to fit into SCK low

or high phase preceding the SCK sampling edge. This value can be achieved when the SPI communicates with a master

having tsu(MI) = 0 while Duty(SCK) = 50 %.

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