ASX340AT
1/4‐inch Color CMOS
NTSC/PAL Digital Image
SOC with Overlay Processor
General Description
The ON Semiconductor ASX340AT is a VGA-format, single-chip
CMOS active-pixel digital image sensor for automotive applications.
It captures high-quality color images at VGA resolution and outputs
NTSC or PAL interlaced composite video.
www.onsemi.com
The VGA CMOS image sensor features ON Semiconductor’s
breakthrough low-noise imaging technology that achieves superior
image quality (based on signal-to-noise ratio and low-light sensitivity)
while maintaining the inherent size, cost, low power, and integration
advantages of ON Semiconductor’s advanced active pixel CMOS
process technology.
The ASX340AT is a complete camera-on-a-chip. It incorporates
sophisticated camera functions on-chip and is programmable through
a simple two-wire serial interface or by an attached SPI EEPROM or
Flash memory that contains setup information that may be loaded
automatically at startup.
IBGA63 7.5 y 7.5
CASE 503AE
ORDERING INFORMATION
See detailed ordering and shipping information on page 3 of
this data sheet.
The ASX340AT performs sophisticated processing functions
including color recovery, color correction, sharpening, programmable
gamma correction, auto black reference clamping, auto exposure,
50Hz/60Hz flicker detection and avoidance, lens shading correction,
auto white balance (AWB), and on-the-fly defect identification and
correction.
The ASX340AT outputs interlaced-scan images at 60 or 50 fields
per second, supporting both NTSC and PAL video formats. The image
data can be output on one or two output ports:
• Auto Black-Level Calibration
• 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
• Development System with DevWare
• Composite analog video (single-ended and differential
output support)
• Parallel 8-, 10-bit digital
Features
• Low-Power CMOS Image Sensor with Integrated Image Flow
Processor (IFP) and Video Encoder
• 1/4-inch Optical Format, VGA Resolution (640 H x 480 V)
• 2x Upscaling Zoom and Pan Control
Applications
• Automotive Rear View Camera and Side
Mirror
• Blind Spot and Surround View
•
40 Additional Columns and 36 Additional Rows to Compensate
for Lens Alignment Tolerances
• 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
• 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
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
October, 2016 − Rev. 10
ASX340AT/D