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STM32F745xx STM32F746xx Electrical characteristics
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Figure 72. Quad-SPI timing diagram - SDR mode
Figure 73. Quad-SPI timing diagram - DDR mode
5.3.29 Camera interface (DCMI) timing specifications
Unless otherwise specified, the parameters given in Table 108 for DCMI are derived
from tests performed under the ambient temperature, f
HCLK
frequency and V
DD
supply
voltage summarized in
Table 17, with the following configuration:
• DCMI_PIXCLK polarity: falling
• DCMI_VSYNC and DCMI_HSYNC polarity: high
• Data formats: 14 bits
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Table 108. DCMI characteristics
(1)
1. Guaranteed by characterization results.
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 3.5 -
ns
t
h(DATA)
Data input hold time 0 -
t
su(HSYNC)
t
su(VSYNC)
DCMI_HSYNC/DCMI_VSYNC input setup time 2.5 -
t
h(HSYNC)
t
h(VSYNC)
DCMI_HSYNC/DCMI_VSYNC input hold time 0 -
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