STM32F479AI datasheet(183/208 Pages) STMICROELECTRONICS

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STM32F479xx

Electrical characteristics

187

Figure 73. DCMI timing diagram

5.3.32

LCD-TFT controller (LTDC) characteristics

Unless otherwise specified, the parameters given in

Table 110 for LCD-TFT are derived

from tests

performed under the ambient temperature, fHCLK frequency and VDD supply

voltage summarized in Table 17, with the following configuration:

•

LCD_CLK polarity: high

•

LCD_DE polarity: low

•

LCD_VSYNC and LCD_HSYNC polarity: high

•

Pixel formats: 24 bits

•

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

•

Capacitive load CL = 30 pF

•

Measurement points are done at CMOS levels: 0.5 VDD

Table 109. DCMI characteristics(1)

1. 1.Guaranteed based on test during characterization.

Symbol

Parameter

Min

Max

Unit

Frequency ratio DCMI_PIXCLK/fHCLK

-0.4

DCMI_PIXCLK Pixel clock input

MHz

DPixel

Pixel clock input duty cycle

tsu(DATA)

Data input setup time

th(DATA)

Data input hold time

tsu(HSYNC)

tsu(VSYNC)

DCMI_HSYNC/DCMI_VSYNC input setup time

3.5

th(HSYNC)

th(VSYNC)

DCMI_HSYNC/DCMI_VSYNC input hold time

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