STV0681 datasheet(1/44 Pages) STMICROELECTRONICS

部件名	STV0681

功能描述	DUAL-MODE DIGITAL CAMERA CO-PROCESSOR

PDF	44 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 44 page

March 2003

ADCS 7283313C

1/44

STV0681

DUAL-MODE DIGITAL CAMERA CO-PROCESSOR

®

DESCRIPTION

STMicroelectronics Imaging Division has produced

the camera co-processor STV0681 which, used

with CIF/VGA sensors as part of a low cost dual-

mode camera chipset, allows a new line of low cost

cameras or toy products to be brought to the

market. STV0681 is a mask ROM version of

STV0680B, programmed with v3.00 Firmware.

FEATURES

ST have maintained the standard features already

available in the successful STV068B chipset,

including:

q

Support for VV6411 (CIF) and VV6501 (VGA)

CMOS imaging sensors.

q

Support for SDRAM sizes 16MBit (up to 20

CIF images) or 64Mbit (up to 80 CIF or 26

VGA images).

q

Low resolution “economy” mode allows for

more images to be stored.

q

High frame rate web cam (tethered video)

over USB.

q

Audio record/playback and “Delete Last”

function

q

Custom sounds playback (e.g. “Talking” or

“Musical” camera)

q

Support for an OEM Flashgun module

q

Automatic anti-flicker exposure control.

q

Image up load over RS232 or USB.

q

Driver support for Win98/Win2k/WinME and

MacOS 8.6/9.0/9.1.

q

Continuous capture while untethered (except

when Flashgun enabled) and downloading to

AVI file format

q

Power-saving “stand-by” mode which

maintains memory contents.

q

Simple user interface including 2 buttons,

status LCD display, and buzzer.

q

Evaluation Kit (EVK) available.

q

Software Development Kit (SDK) allows OEM

PC Software applications to be written.

q

Quick Power Down (by holding Mode Button).

q

“Delete Last” Function

Audio Record and Playback

The enhanced features included in STV0681 allow

audio memos to be recorded at a sampling rate of

11kHz, by adding a microphone and comparator

chip, and by utilizing the pre-amplifier included in

CIF/VGA sensors such as VV6411 and VV6501

respectively.

These sounds can be uploaded to the PC over USB

or RS232, and played back using a Software

application developed by the OEM using the SDK.

Demonstration PC software with source code is

available with the Evaluation Kit (EVK). With

suitable OEM software, the camera could even be

used to record comments about pictures or video

clips in a “dictaphone” fashion, with the audio

commentary played back when viewing the

pictures/video.

Recorded audio sounds can also be played back on

the camera, with the addition of an amplifier chip

and speaker or headphone socket.

By auto-detecting hardware, STV0681 will only

enable these additional functions if audio hardware

is fitted. Actual hardware implementation is the

subject of a separate STV0681 Reference design

(see

Chapter 10).

Evaluation Kit and Reference Design

Evaluation kits are available for STV0681 features.

Precise design guidelines are available from ST as

a reference design manual (see

Chapter 10).

Note:

Simultaneous audio record and

continuous video capture is not possible.

类似零件编号 - STV0681

制造商	部件名	数据表	功能描述
STMicroelectronics	STV0681	52Kb / 2P	VGA Color CMOS Image Sensor Module May-2004

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