STM32U375CE datasheet(172/222 Pages) STMICROELECTRONICS

Part #	STM32U375CE

Description	Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 144 DMIPS, 1 MB flash memory, 256 KB SRAM, SMPS

PDF	222 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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172 / 222 page

Table 120. USART (SPI mode) characteristics

Evaluated by characterization. Not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCK

USART clock

frequency

SPI master mode 1.71 V ≤

VDDIOX ≤ 3.6 V

MHz

SPI slave mode 1.71 V ≤

VDDIOX ≤ 3.6 V

SPI master or slave mode

1.08 V ≤ VDDIO2 ≤ 1.32 V

tsu(NSS)

NSS setup

time

SPI Ssave mode

tker(1) + 3

th(NSS)

NSS hold

time

SPI slave mode

tw(CKH)

CK high and

low time

SPI master mode

1/ fCK /2-1

1/ fCK /2

1/ fCK /2+1

tw(CKL)

tsu(RX)

Data input

setup time

SPI master mode

14/22(2)

tsu(RX)

SPI slave mode

2.5

th(RX)

Data input

hold time

SPI master mode

0.5

th(RX)

SPI slave mode

tv(TX)

Data output

valid time

SPI Slave

mode

2.7 V ≤

VDDIOX ≤ 3.6

11.5

15.5

1.71 V ≤

VDDIOX ≤ 3.6

1.08 V ≤

VDDO2 ≤ 1.32

15.5

23.5

tv(TX)

SPI Master

mode

2.7 V ≤

VDDIOX ≤ 3.6

0.5

1.71 V ≤

VDDIOX ≤ 3.6

2.5

th(TX)

Data output

hold time

SPI slave mode

th(TX)

Data output

hold time

SPI master mode

1. Tker is the usart_ker_ck_pres clock period.

2. When using SPI on port G.

STM32U375xx

Electrical characteristics

DS14861 - Rev 2

page 172/222

STM32U375CE Datasheet(PDF) 172 Page - STMicroelectronics

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