AS0142AT datasheet(3/45 Pages) ONSEMI

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AS0142AT

www.onsemi.com

GENERAL DESCRIPTION

The ON Semiconductor AS0142AT is a 1.0 MP CMOS

digital image sensor and signal processor for automotive

viewing

applications.

The

device

includes

full

auto−functions support (AWB and AE) and ALTM

(Adaptive Local Tone Mapping) to enhance HDR image/

video. The AS0142AT implements a high−sensitivity

3.0

mm pixel with DR−Pix technology and advanced noise

reduction, to enable excellent low−light performance. It can

be operated in either linear or high dynamic range modes.

The AS0142AT may be operated in video (master) mode or

in single frame trigger mode, providing flexibility for

multi−camera systems.

FUNCTIONAL OVERVIEW

Figure 1 shows the typical configuration of the

AS0142AT in a camera system. On the host side, a two−wire

serial or SPI interface is used to configure the operation of

the AS0142AT, and image data is transferred using the

parallel interface between the AS0142AT and the host.

Image data from 1200x800 Active Color Array is

communicated with

AS0142AT

embedded

image

co−processor via internal parallel or HiSPi interface.

Figure 1. AS0142AT Connectivity

Figure 2. Example AS0142AT Connectivity

SYSTEM INTERFACES

Figure 3: “Typical Parallel Configuration (Legacy Mode)

@ AS0142AT Internal Regulator” shows typical

AS0142AT device connections.

All power supply rails must be decoupled from ground

using capacitors as close as possible to the package.

The AS0142AT signals to the sensor and host interfaces

can be at different supply voltage levels to optimize power

consumption and maximize flexibility. Table 3 provides the

signal descriptions for the AS0142AT

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