STM32L4S5AI datasheet(248/275 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L4S5xx, STM32L4S7xx and STM32L4S9xx

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

function characteristics.

6.3.35

SD/SDIO/MMC card host interfaces (SDMMC)

Unless otherwise specified, the parameters given in Table xx for SDIO are derived from

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

conditions summarized in Table 22: General operating conditions with the following

configuration:

•

Output speed is set to OSPEEDRy[1:0] = 11

•

Capacitive load C = 30 pF

•

Measurement points are done at CMOS levels: 0.5 x VDD Refer to Section 6.3.17: I/O

port characteristics for more details on the input/output characteristics.

Table 115. LTDC characteristics(1)

1. Guaranteed by characterization results.

Symbol

Parameter

Conditions

Min

Max

Unit

fCLK

DCLK

LTDC clock output

frequency

2.7 V < VDD < 3.6 V

MHz

1.71 V < VDD < 3.6 V

LTDC clock output duty

cycle

-45

tw(CLKH)

tw(CLKL)

Clock high time

Clock low time

tw(CLK)/2-0.5 tw(CLK)/2+0.5

tv(DATA)

Data output valid time

th(DATA)

Data output hold time

tv(HSYNC)

tv(VSYNC)

tv(DE)

HSYNC/VSYNC/DE

output valid time

th(HSYNC)

th(VSYNC)

th(DE)

HSYNC/VSYNC/DE

output hold time

-0

Table 116. Dynamics characteristics:

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

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

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