STM32L4S5AI datasheet(249/275 Pages) STMICROELECTRONICS

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DocID030322 Rev 2

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STM32L4S5xx, STM32L4S7xx and STM32L4S9xx

Electrical characteristics

250

CMD, D inputs (referenced to CK) in eMMC legacy/SDR/DDR and SD HS/SDR(2)/DDR(2) mode

tISU

Input setup time HS

1.5

tIHD

Input hold time HS

CMD, D outputs (referenced to CK) in eMMC legacy/SDR/DDR and SD HS/SDR(2)/DDR(2) mode

tOV

Output valid time HS

6.5

tOH

Output hold time HS

CMD, D inputs (referenced to CK) in SD default mode

tISUD

Input setup time SD

1.5

tIHD

Input hold time SD

CMD, D outputs (referenced to CK) in SD default mode

tOVD

Output valid default time SD

2.5

tOHD

Output hold default time SD

1. Guaranteed by characterization results.

2. For SD 1.8 V support, an external voltage converter is needed.

Table 117. Dynamics characteristics:

eMMC characteristics at VDD = 1.71 V to 1.9 V(1)(2)

1. Guaranteed by characterization results.

2. Cload = 20 pF.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fPP

Clock frequency in data transfer

mode

-0

MHz

SDIO_CK/fPCLK2 frequency

ratio

8/3

tW(CKL)

Clock low time

fpp = 52 MHz

8.5

9.5

tW(CKH)

Clock high time

fpp = 52 MHz

8.5

9.5

CMD, D inputs (referenced to CK) in eMMC mode

tISU

Input setup time HS

0.5

tIH

Input hold time HS

4.5

CMD, D outputs (referenced to CK) in eMMC mode

tOV

Output valid time HS

7.4

tOH

Output hold time HS

Table 116. Dynamics characteristics:

SD / eMMC characteristics at VDD = 2.7 V to 3.6 V (1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

STM32L4S5AI Datasheet(PDF) 249 Page - STMicroelectronics

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