STM32U073RCT6 datasheet(107/146 Pages) STMICROELECTRONICS

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Table 87. SPI characteristics

Evaluated by characterization, not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fSCK

1/tc(SCK)

SPI clock frequency

Master mode receiver/full duplex

1.71 < VDD < 3.6 V

Voltage Range 1

MHz

Master mode transmitter

1.71 < VDD < 3.6 V

Voltage Range 1

Slave mode receiver

1.71 < VDD < 3.6 V

Voltage Range 1

Slave mode transmitter/full duplex

2.7 < VDD < 3.6 V

Voltage Range 1

27(1)

Slave mode transmitter/full duplex

1.71 < VDD < 3.6 V

Voltage Range 1

21.5(1)

Voltage Range 2

9.5

tsu(NSS)

NSS setup time

Slave mode, SPI prescaler = 2

TPCLK

th(NSS)

NSS hold time

Slave mode, SPI prescaler = 2

tw(SCKH)

tw(SCKL)

SCK high and low time

Master mode

TSCK2 - 1.5(2)

TSCK2(2)

TSCK2 + 1.5(2)

tsu(MI)

Data input setup time

Master mode

tsu(SI)

Slave mode

th(MI)

Data input hold time

Master mode

2.5

th(SI)

Slave mode

2.5

ta(SO)

Data output access time

Slave mode

12.5

tdis(SO)

Data output disable time

Slave mode

7.5

tv(SO)

Data output valid time

Slave mode 2.7 < VDD < 3.6 V

Voltage Range 1

Slave mode 1.71 < VDD < 3.6 V

Voltage Range 1

Slave mode 1.71 < VDD < 3.6 V

Voltage Range 2

tv(MO)

Master mode

5.5

th(SO)

Data output hold time

Slave mode

th(MO)

Master mode

1. 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 %.

2. TSCK2 = TPCLK × prescaler / 2

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 107/146

STM32U073RCT6 Datasheet(PDF) 107 Page - STMicroelectronics

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