STM32F446RC datasheet(133/202 Pages) STMICROELECTRONICS

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STM32F446xC/E

Electrical characteristics

175

I2S interface characteristics

Unless otherwise specified, the parameters given in Table 66 for the I2S interface are

derived from tests performed under the ambient temperature, fPCLKx frequency and VDD

supply voltage conditions summarized in Table 16, with the following configuration:

•

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

•

Capacitive load C = 30 pF

•

Measurement points are done at CMOS levels: 0.5VDD

Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate

function characteristics (CK, SD, WS).

tw(CKH)

QSPI clock high and low

(T(CK) / 2) - 2

T(CK) / 2

tw(CKL)

T(CK) / 2

(T(CK) / 2) +2

ts(IN)

Data input setup time

th(IN)

Data input hold time

5.5

tv(OUT)

Data output valid time

2.7V <VDD< 3.6V

5.5

6.5

1.71V <VDD< 3.6V

9.5

th(OUT)

Data output hold time

3.5

1. Guaranteed based on test during characterization.

Table 65. QSPI dynamic characteristics in DDR Mode(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 66. I2S dynamic characteristics(1)

Symbol

Parameter

Conditions

Min

Max

Unit

fMCK

I2S Main clock output

256 x 8K 256 x Fs(2)

MHz

fCK

I2S clock frequency

Master data

64 x Fs

MHz

Slave data

64 x Fs

DCK

I2S clock frequency duty cycle

Slave receiver

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