STV0680 datasheet(9/63 Pages) STMICROELECTRONICS

9 / 63 page

Version 3.4

9/63

STV0680B + VV6444/6410/6500

Introduction

1.4.6

User features on PC software (STV0680B-003)

All PC software written for a STV0680B-001 camera will function with a STV0680B-003 camera

which is only used to take still images/video.

The SDK (version 2.90 or later) allows for:

the OEM to write a custom application for uploading sound memos, based on the example

LCDC demo software.

the OEM to write a custom application for downloading custom sounds to the camera, based

on the example CustomSound software.

1.4.7

Power management features and USB compliance

Retention of pictures, recorded sounds, and downloaded custom sounds with extremely low

power operation, which appears to the user as if the camera is “switched off”.

Auto power-off after 30sec with no user activity

Operates from 4.5-6V battery, although system voltage is 5V or 3.3V, dependant on sensor.

Low battery detection

Dependant on hardware configuration, switch-over to USB power supply is supported, to allow

the device to operate with low batteries or without batteries, when connected to USB.

Full USB compliance requirements are listed in the USB specification, however, in a camera

designed using this chipset, the following must at least be included: (a) an SDRAM with

sufficiently low self-refresh current, (b) USB inrush protection circuitry, and (c) (in the case of

VV6444 only) a switched 5V sensor supply is used, to maintain sufficient supply voltage to the

5V sensor. See

Section 4 for further details.

1.4.8

General features

High speed picture/sounds upload to PC/Mac over USB

ST Colour processing algorithms included under license (as part of drivers/SDK)

USB or RS232 serial interface options, and VfW / TWAIN driver support.

STV0680 数据表(PDF) 9 Page - STMicroelectronics