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
VGA resolution, ~1/4”Lens
Frame rate up to 30fps at following resolution format
VGA format (640x480) with JPEG compression
CIF format (352x288) with JPEG compression
QVGA format (320x240) with JPEG compression
QCIF format (176x144) without compression
QQVGA format (160x120) without compression
RGB Bayer’s pattern raw data
Up to 3fps @VGA format (640x480)
Up to 12fps @CIF format (352x288)
Up to 12fps @QVGA format (320x240)
Up to 30fps @QCIF format (176x144)
Up to 30fps @QQVGA format (160x120)
Standard JPEG compression engine comply to ISO/IEC
10918-1(JPEG)
AEC/AGC/AWB automatic
4 IO-trapping pins to set USB PID
Support USB suspend mode
Support video data transfer through USB isochronous
transfer
Snapshot control through USB interrupt pipe
USB Vendor ID, Product ID, device release number and
the string descriptor index via a serial EEPROM
(93C46) or by metal mask
Complete Universal Serial Bus
®
spec V1.1
compatibility
Key Specification
Supply Voltage
Resolution
Array Diagonal
Optical format
Pixel Size
Frame Rate
System Clock
Color Filter
Scan mode
Sensitivity
PGA gain
S/N ratio
Power consumption
Package
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
3.06 V/lux*sec
23.52dB (Max.)
>45dB
65mA
48-pin PLCC / 37-pin CSP
Ordering Information
Order number
PAC7311PE
PAC7311CS
Package Type
48-pin PLCC
37-pin CSP
Package Size(mm)
11.43 x 11.43
5.06 x 5.55
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.
1
PixArt Imaging Inc.
E-mail:
fae_service@pixart.com.tw
V1.5 Oct. 2005
PIXART [ PIXART IMAGING INC. ]
