STV-974/552S-R01 STMicroelectronics, STV-974/552S-R01 Datasheet - Page 6

• 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

VS6552
3 FUNCTIONAL DESCRIPTION
The first sections of this chapter detail the main
blocks in the device:
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The later sections of this chapter describe other
functional aspects of the device. Device level op-
erating modes, including suspend, are detailed
Figure 2. Analog Video Block
3.1.2 Analogue Block Diagram
The analog video block from
a VGA resolution pixel array, power management
circuitry. The digital block provides all timing sig-
nals to drive the analog block.
Pixel voltage values are read out and digitized us-
ing the address decoders and column ADC
3.2 Digital Video Block
3.2.1 Features
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Analog video block
Digital video block
Frame rate: 30 frame/s max. (VGA) can be
reduced down to less than 3 frame/s (VGA)
Automatic dark calibration to ensure consistent
video level over varying scenes
SRAM readout
Column ADC
X-Address
array
VGA
pixel
Figure
4, consists of
management
Y address
Power
raw sensor data
3.1 Analog Video Block
3.1.1 Features
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3.2.2 Dark Calibration Algorithm
VS6552 runs a dark calibration algorithm on the
raw image data to control the video offsets caused
by dark current. This ensures that a high quality
image is output over a range of operating condi-
tions. First frame dark level is correctly calibrated,
for subsequent frames the adjustment of the dark
level is damped by a leaky integrator function to
avoid possible frame to frame flicker.
Timing signals
ADC: 10-bit A/D converter - SRAM readout
Dynamic range 60 dB (typical)
SNR 37 dB @ 50 cd.m
Timing signals
Fixed pattern noise (FPN) data gathering
Line and frame statistics gathering
On-chip Power-On-Reset cell
Single video output format: VGA 640 x 480
H - Scaler function to aid software only
viewfinder implementations
Digital
logic
2
(typical)