Datasheet

Electrical characteristics STM32F745xx STM32F746xx
192/227 DocID027590 Rev 4
Figure 74. DCMI timing diagram
5.3.30 LCD-TFT controller (LTDC) characteristics
Unless otherwise specified, the parameters given in Table 109 for LCD-TFT are derived
from tests performed under the ambient temperature, fHCLK frequency and V
DD
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
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Table 109. LTDC characteristics
(1)
1. Guaranteed by characterization results.
Symbol ParameterMinMaxUnit
f
CLK
LTDC clock output frequency - 45 MHz
D
CLK
LTDC clock output duty cycle 45 55 %
t
w(CLKH)
t
w(CLKL)
Clock High time, low time tw(CLK)/2 − 0.5 tw(CLK)/2+0.5
ns
t
v(DATA)
Data output valid time - 6
t
h(DATA)
Data output hold time 2 -
t
v(HSYNC)
HSYNC/VSYNC/DE output valid
time
-3t
v(VSYNC)
t
v(DE)
t
h(HSYNC)
HSYNC/VSYNC/DE output hold
time
0.5 -t
h(VSYNC)
th(DE)
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