STV-974/552S-R01 STMicroelectronics, STV-974/552S-R01 Datasheet - Page 38

• Manufacturer Part Number: STV-974/552S-R01
• Description: KIT DEMO W/VS6552
• Manufacturer: STMicroelectronics

Specifications of STV-974/552S-R01

• Sensor Type: CMOS Imaging, Color (RGB)
• Sensing Range: VGA
• Interface: I²C
• Sensitivity: 30 fps
• Embedded: No
• Utilized Ic / Part: STV0974E, VS6552
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3891

STV0974
Once the image is sent, the STV0974 automatically returns to Idle. See
Figure 27: Viewfinder to capture timing
Idle to Flash In idle mode, white balance must be set to a fixed setting (automatic white balance
setting is not recommended as no convergence is applied) and the “delay transfer mode” must be
set to 0 (no frame delay). When changing to flash mode, the maximum frame rate is automatically
set with respect to data format. The first frame is captured, processed and transferred by the
STV0974. The system automatically goes back to idle mode.
mode.
When setting the torch mode, the flash mode should not be used. All the standard operating modes
like ViewFinder, still capture or live operate normally. As an example, the automatic white balance
and exposure control as well as “delay transfer mode” can be active if required.
Figure 28: Flash mode diagram
Sensor data
output
STV0974
Strobe request
from host
Flash Strobe
pulse (DIO12 pin)
data out
Exposure time
VisionLink data
MSCL/MSDA
Sensor mode
Note:
974 mode
STV0974
output data
SCL/SDA
1 If the system exposure and white balance is already stable, the maximum delay is 1 frame.
2
1
Exposure time of pixels is automatically set to maximum exposure time
Strobe pulse width is clipped to a maximum of 8 lines
ViewFinder
capture
Max 1 frame
Capture in progress
Video active
Max 20 frames
Min = 0 frame
(
Note 1
)
Figure 28
Max 2 frames
1
illustrates the timing in flash
Figure 27
Functional description
Capture
2
.
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