‡
ASX340AT: 1/4-Inch Color CMOS NTSC/PAL Digital Image Sensor
Features
1/4-Inch Color CMOS NTSC/PAL Digital Image
SOC with Overlay Processor
ASX340AT Datasheet, Rev. H
For the latest datasheet, please visit www.onsemi.com
Features
Table 1:
Key Parameters
Typical Value
• Low-power CMOS image sensor with integrated
image flow processor (IFP) and video encoder
• 1/4-inch optical format, VGA resolution (640H x
480V)
Parameter
5.6 m x 5.6 m active pinned-
photodiode with high-sensitivity
mode for low-light conditions
Pixel size
and type
• 2x upscaling zoom and pan control
•
40 additional columns and 36 additional rows to
compensate for lens alignment tolerances
728H x 560V (includes VGA active
pixels, demosaic and lens alignment
pixels)
Sensor clear pixels
• Option to use single 2.8 V power supply with off-chip
bypass transistor
• Overlay generator for dynamic bitmap overlay
• Integrated video encoder for NTSC/PAL with overlay
capability and 10-bit I-DAC
NTSC output
PAL output
720H x 487V
720H x 576V
Optical area
(clear pixels)
4.077 mm x 3.136 mm
• Integrated microcontroller for flexibility
• On-chip image flow processor performs
sophisticated processing, such as color recovery and
correction, sharpening, gamma, lens shading
correction, on-the-fly defect correction, auto white
balancing, and auto exposure
Optical format
Frame rate
¼-inch
50/60 fields/sec
Progressive scan
RGB standard Bayer
0°
Sensor scan mode
Color filter array
Chief ray angle (CRA)
Shutter type
• Auto black-level calibration
Electronic rolling shutter (ERS)
• 10-bit, on-chip analog-to-digital converter (ADC)
• Internal master clock generated by on-chip phase-
locked loop (PLL)
• Two-wire serial programming interface
• Interface to low-cost EEPROM and Flash through SPI
bus
• High-level host command interface
• Stand-alone operation support
• Comprehensive tool support for overlay generation
and lens correction setup
Exposure, white balance, black level
offset correction, flicker detection and
avoidance, color saturation control,
on the-fly defect correction, aperture
correction
Automatic Functions
Exposure, white balance, horizontal
and vertical blanking, color,
sharpness, gamma correction, lens
shading correction, horizontal and
vertical image flip, zoom, windowing,
sampling rates, GPIO control
Programmable
Controls
• Development system with DevWare
Applications
• Automotive rear view camera and side mirror
• Blind spot and surround view
Key parameters are continued on next page.
See “New Features” on page 3.
See “Ordering Information” on page 3
ASX340AT/D Rev. H, 8/15 EN
1
©Semiconductor Components Industries, LLC 2015,