Datasheet

Electrical characteristics STM32F427xx STM32F429xx
194/239 DocID024030 Rev 10
6.3.27 Camera interface (DCMI) timing specifications
Unless otherwise specified, the parameters given in Table 106 for DCMI are derived
from tests performed under the ambient temperature, f
HCLK
frequency and V
DD
supply
voltage summarized in Table 1 7, with the following configuration:
• DCMI_PIXCLK polarity: falling
• DCMI_VSYNC and DCMI_HSYNC polarity: high
• Data formats: 14 bits
Figure 75. DCMI timing diagram
Table 106. DCMI characteristics
Symbol Parameter Min Max Unit
Frequency ratio DCMI_PIXCLK/f
HCLK
-0.4
DCMI_PIXCLK Pixel clock input - 54 MHz
D
Pixel
Pixel clock input duty cycle 30 70 %
t
su(DATA)
Data input setup time 2 -
ns
t
h(DATA)
Data input hold time 2.5 -
t
su(HSYNC)
t
su(VSYNC)
DCMI_HSYNC/DCMI_VSYNC input setup time 0.5 -
t
h(HSYNC)
t
h(VSYNC)
DCMI_HSYNC/DCMI_VSYNC input hold time 1 -
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