STM32F427XX Datasheet, PDF (194/239 Pages) STMicroelectronics – ARM Cortex-M4 32b MCU+FPU, 225DMIPS, up to 2MB Flash/256+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 comm. interfaces, camera & LCD-TFT

Electrical characteristics
STM32F427xx STM32F429xx
6.3.28
LCD-TFT controller (LTDC) characteristics
Unless otherwise specified, the parameters given in Table 107 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
Symbol
f_CLK
D_CLK
t_w(CLKH)
t_w(CLKL)
t_v(DATA)
t_h(DATA)
t_v(HSYNC)
t_v(VSYNC)
t_v(DE)
t_h(HSYNC)
t_h(VSYNC)
th(DE)
Table 107. LTDC characteristics
Parameter
Min
Max
LTDC clock output frequency
-
42
LTDC clock output duty cycle
45
55
Clock High time, low time
tw(CLK)/2 − 0.5 tw(CLK)/2+0.5
Data output valid time
-
3.5
Data output hold time
1.5
-
Unit
MHz
%
HSYNC/VSYNC/DE output valid
time
-
2.5
ns
HSYNC/VSYNC/DE output hold
time
2
-
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