STM32H7 datasheet(197/357 Pages) STMICROELECTRONICS

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DS12110 Rev 10

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STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev Y)

320

SAI characteristics

Unless otherwise specified, the parameters given in Table 108 for SAI are derived from tests

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

conditions summarized in Table 24: General operating conditions, with the following

configuration:

•

Output speed is set to OSPEEDRy[1:0] = 10

•

Capacitive load C=30 pF

•

Measurement points are performed at CMOS levels: 0.5VDD

Refer to Section 6.3.15: I/O port characteristics for more details on the input/output alternate

function characteristics (SCK,SD,WS).

Table 108. SAI characteristics(1)

Symbol

Parameter

Conditions

Min

Max

Unit

fMCK

SAI Main clock output

256 x 8K

256xFs

MHz

FCK

SAI clock frequency(2)

Master data: 32 bits

128xFs(3)

MHz

Slave data: 32 bits

128xFs

tv(FS)

FS valid time

Master mode

2.7≤VDD≤3.6V

-15

Master mode

1.71≤VDD≤3.6V

-20

tsu(FS)

FS setup time

Slave mode

th(FS)

FS hold time

Master mode

Slave mode

tsu(SD_A_MR)

Data input setup time

Master receiver

0.5

tsu(SD_B_SR)

Slave receiver

th(SD_A_MR)

Data input hold time

Master receiver

3.5

th(SD_B_SR)

Slave receiver

tv(SD_B_ST)

Data output valid time

Slave transmitter (after enable edge)

2.7≤VDD≤3.6V

-17

Slave transmitter (after enable edge)

1.62≤VDD≤3.6V

-20

th(SD_B_ST)

Data output hold time

Slave transmitter (after enable edge)

tv(SD_A_MT)

Data output valid time

Master transmitter (after enable edge)

2.7≤VDD≤3.6V

-17

Master transmitter (after enable edge)

1.62≤VDD≤3.6V

-20

th(SD_A_MT)

Data output hold time

Master transmitter (after enable edge)

7.55

1. Guaranteed by characterization results.

2. APB clock frequency must be at least twice SAI clock frequency.

3. With FS=192 kHz.

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