PAC7311 Datasheet, PDF (1/13 Pages) Pixart Imaging Inc. – VGA PC Camera Single-Chip

PAC7311
PAC7311 VGA PC Camera Single-Chip
General Description
The PAC7311 is a single chip with an embedded VGA CMOS image sensor and USB 1.1 interface. It has JPEG
image compression and image processing. The generic application is a PC camera. JPEG decoder and auto
exposure are performed by software in PC side. And the optical size is 1/4” which can easily be embedded in
LCD monitors, notebooks or PDA.
There are 4 IO-trapping pins with internal pull-low resistors. It is flexible for customers to set PID. It supports the
interface to a serial-EEPROM. When the EEPROM function is enabled, the internal control registers can be
power-up loaded from external EEPROM. This allows customization of VID, PID, product string.
Features
Key Specification
z VGA resolution, ~1/4”Lens
z Frame rate up to 30fps at following resolution format
Supply Voltage
„ VGA format (640x480) with JPEG compression
Resolution
„ CIF format (352x288) with JPEG compression
„ QVGA format (320x240) with JPEG compression
Array Diagonal
„ QCIF format (176x144) without compression
Optical format
„ QQVGA format (160x120) without compression
z RGB Bayer’s pattern raw data
Pixel Size
„ Up to 3fps @VGA format (640x480)
Frame Rate
„ Up to 12fps @CIF format (352x288)
„ Up to 12fps @QVGA format (320x240)
System Clock
„ Up to 30fps @QCIF format (176x144)
Color Filter
„ Up to 30fps @QQVGA format (160x120)
z Standard JPEG compression engine comply to ISO/IEC ^{Scan mode}
5.0V ± 10%
640 (H) x 480 (V)
4.48mm
1/4“
5.6um x 5.6um
Up to 30fps
12MHz
RGB Bayer Pattern
Progressive
10918-1(JPEG)
z AEC/AGC/AWB automatic
Sensitivity
z 4 IO-trapping pins to set USB PID
PGA gain
z Support USB suspend mode
z Support video data transfer through USB isochronous
S/N ratio
3.06 V/lux*sec
23.52dB (Max.)
>45dB
transfer
Power consumption 65mA
z Snapshot control through USB interrupt pipe
z USB Vendor ID, Product ID, device release number and
Package
48-pin PLCC / 37-pin CSP
the string descriptor index via a serial EEPROM
(93C46) or by metal mask
z Complete Universal Serial Bus^® spec V1.1
compatibility
Ordering Information
Order number
Package Type
PAC7311PE
PAC7311CS
48-pin PLCC
37-pin CSP
Package Size(mm)
11.43 x 11.43
5.06 x 5.55
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.5 Oct. 2005