STM32H7 datasheet(303/357 Pages) STMICROELECTRONICS

Part #	STM32H7

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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303 / 357 page

DS12110 Rev 10

303/357

STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev V)

320

Refer to Section 7.3.15: I/O port characteristics for more details on the input/output alternate

function characteristics (NSS, CK, TX, RX for USART).

Figure 101. USART timing diagram in Master mode

1. Measurement points are done at 0.5VDD and with external CL = 30 pF.

Table 204. USART characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCK

USART clock frequency

Master mode

12.5

MHz

Slave mode

tsu(NSS)

NSS setup time

Slave mode

tker+1

th(NSS)

NSS hold time

Slave mode

tw(SCKH),

tw(SCKL)

CK high and low time

Master mode

1/fCK/2-2

1/fCK/2

1/fCK/2+2

tsu(RX)

Data input setup time

Master mode

tker+6

Slave mode

1.5

th(RX)

Data input hold time

Master mode

Slave mode

1.5

tv(TX)

Data output valid time

Slave mode

Master mode

0.5

th(TX)

Data output hold time

Slave mode

Master mode

1. Guaranteed by characterization results.

MSv65386V1

CPHA=0

OUTPUT

INPUT

CPHA=0

LSB OUT

LSB IN

CPOL=0

CPOL=1

BIT1 OUT

NSS input

tc(SCK)

tw(SCKH)

tw(SCKL)

tr(SCK)/tf(SCK)

th(RX)

High

CPHA=1

CPOL=0

CPOL=1

tsu(RX)

tv(TX)

th(TX)

MSB IN

BIT6 IN

MSB OUT

STM32H7 Datasheet(PDF) 303 Page - STMicroelectronics

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