STV-6411C-D01 STMICROELECTRONICS [STMicroelectronics], STV-6411C-D01 Datasheet

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STV-6411C-D01

Manufacturer Part Number
STV-6411C-D01
Description
DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
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:
March 2003
Support for VV6411 (CIF) and VV6501 (VGA)
CMOS imaging sensors.
Support for SDRAM sizes 16MBit (up to 20
CIF images) or 64Mbit (up to 80 CIF or 26
VGA images).
Low resolution “economy” mode allows for
more images to be stored.
High frame rate web cam (tethered video)
over USB.
Audio record/playback and “Delete Last”
function
Custom sounds playback (e.g. “Talking” or
“Musical” camera)
Support for an OEM Flashgun module
Automatic anti-flicker exposure control.
Image up load over RS232 or USB.
Driver support for Win98/Win2k/WinME and
MacOS 8.6/9.0/9.1.
Continuous capture while untethered (except
when Flashgun enabled) and downloading to
AVI file format
Power-saving “stand-by” mode which
maintains memory contents.
Simple user interface including 2 buttons,
status LCD display, and buzzer.
Evaluation Kit (EVK) available.
Software Development Kit (SDK) allows OEM
PC Software applications to be written.
®
DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
ADCS 7283313C
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
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
Note:
Chapter 10
Quick Power Down (by holding Mode Button).
“Delete Last” Function
Simultaneous audio record and
continuous video capture is not possible.
).
STV0681
Chapter 10
).
1/44

Related parts for STV-6411C-D01

STV-6411C-D01 Summary of contents

Page 1

... 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 ...

Page 2

... Audio record and playback ................................................................................................. 12 2.5 PC interface options and software support ........................................................................ 13 2.6 Anti-flicker exposure and gain control ................................................................................ 14 Chapter 3 Camera Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.1 Modes available ................................................................................................................. 15 3.2 Description of modes ......................................................................................................... 16 Chapter 4 STV0681 Hardware Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.1 Sensor interface ................................................................................................................. 18 4.2 Memory interface ............................................................................................................... 18 4.3 USB interface ..................................................................................................................... 21 4.4 UART module for RS232 interface ..................................................................................... 22 4.5 Power management and battery type ................................................................................ 23 4.6 Quartz crystal ...

Page 3

... Absolute maximum ratings ................................................................................................. 31 7.3 STV0681 specifications ...................................................................................................... 32 7.4 USB specifications ............................................................................................................. 32 7.5 DC characteristics .............................................................................................................. 33 7.6 PLL characteristics ............................................................................................................. 33 7.7 Crystal tolerance ................................................................................................................ 33 7.8 Typical current consumption of complete camera .............................................................. 34 Chapter 8 STV0681 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 8.1 STV0681 pinout ................................................................................................................. 35 8.2 STV0681 pin description .................................................................................................... 36 Chapter 9 STV0681 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Chapter 10 Evaluation Kit (EVK .42 10.1 Ordering details .................................................................................................................. 42 10.2 Technical support ............................................................................................................... 43 ADCS 7283313C 3/44 ...

Page 4

... Initial release (product preview) April 2002 Document status updated to datasheet. Major changes: removed references of VV6410 and VV6444 sensors November Removed all salestypes for imaging sensors: 2002 removed section 6.1 addition of chapter 5 - Customizing the STV0681 Replacement of section 6.1 - General features (in Chapter 6 - Software support) ADCS 7283313C Comments STV0681 ...

Page 5

... AVI file. 1.1.4 Audio features The STV0681 allows audio memos to be recorded at a sampling rate of 11kHz. These sounds can be uploaded to the PC over USB or RS232 and played on the PC, or they can be replayed on the camera. With audio playback hardware fitted to the camera possible to download a set 20.WAV file “ ...

Page 6

... Lens + Subject IR Filter 1.2 Key system features The key features of a typical camera based on the STV0681 chipset are listed here below. 1.2.1 Image features Support for CIF resolution sensor - 352 x 288 pixels Support for VGA resolution sensor - 640 x 480 pixels 80 picture storage capacity possible for CIF, with 64MB memory 26 picture storage capacity for VGA, with 64MBit memory A greater number of images can be stored when ‘ ...

Page 7

... STV0681 1.2.2 User features on camera Self-timer mode allows a picture to be captured after several seconds. Twin 7 segment LCD panel supported - showing number of pictures left, and modes. Picture counter helps the user to know how much memory is left. Un-tethered ‘Continuous’ mode allows capture of image sequences for storage in memory and subsequent download to PC ...

Page 8

... USB inrush protection circuitry to maintain sufficient supply voltage to the 5V Section 7 sensor. See for further details. 1.2.5 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. 8/44 ADCS 7283313C STV0681 ...

Page 9

... SDRAM as 10sec of audio, and one VGA image uses the same amount of SDRAM as 30 sec. of audio CIF camera with STV0681 and 64Mbit SDRAM can store up to 320 images by using QCIF mode. When more than 99 images are available, the LCD display remains at 99. When the number of available images is inferior to 99, the LCD display shows the number of available images like in all other modes ...

Page 10

... Note: A CIF camera with STV0681 and 64Mbit SDRAM can store up to 320 images by using QCIF mode. When more than 99 images are still available, the LCD display remains at 99. When the number of available images is inferior to 99, the LCD display shows how many images are available like in all other modes ...

Page 11

... End of continuous capture in un-tethered ‘Continuous’ mode due to full memory. 7 Self-timer activated, count down has started. 2.2.5 Custom sounds A camera which includes STV0681 and audio playback hardware can have a set of custom sounds downloaded from a PC application. A different sound can be associated with each of the following functions: Power On ...

Page 12

... Battery level detect and USB auto-switch An on-chip battery level detector on STV0681 detects when the battery voltage falls below a threshold. The chosen threshold level is determined by a resistor value, as shown in Where no USB has been detected, the LCD display flashes, indicating that the battery is low. When a USB connection has been detected, the LCD display does not flash ...

Page 13

... STV0681 2.5 PC interface options and software support USB interface (full speed 12Mbit per second maximum) and RS232 interface (115.2kbaud) are supported by the chipset, with driver software available from STMicroelectronics for both. The interface type is auto-detected by the chipset. PC software can be one of the following: 1 Simple image upload demonstration software supplied by ST, allowing uploading of stills or ‘ ...

Page 14

... Flashgun exposure When the STV0681 and a flashgun module are included in the camera, and the flashgun enable signal is high, the exposure mode operates in a different manner. The CMOS sensor progressive scan readout requires that the sensor is set to maximum exposure so that all lines are exposed. ...

Page 15

... When a given mode is displayed it may be selected by pressing the shutter button option is not selected within 5 seconds, the display reverts to showing the number of available pictures. 3.1 Modes available Figure 3: STV0681 modes (CIF camera with 16Mbit SDRAM assumed) Normal Audio Record: Ar Audio Playback: AP ...

Page 16

... Keeping the shutter button pressed down also allows to cycle through the audio recordings. Pressing the mode button during playback stops the audio clip. Note: Minimum audio recording length is set to 0.5 seconds. 16/44 ADCS 7283313C STV0681 ...

Page 17

... STV0681 3.2.5 Delete Last Object - dA/dP/dC This mode is available with audio record hardware fitted. If the last object captured was an audio recording, 'dA' (delete audio) is displayed, if the last object was an image, then 'dP' (delete picture) is displayed, or, if the last object was part of a continuous capture sequence, then 'dC' (delete continuous) is displayed. If the camera is empty, the mode is suppressed. The mode works like ‘ ...

Page 18

... STV0681 is designed to interface to an external 16Mbit or 64Mbit SDRAM (see SDRAM device must have a 16 bit wide data bus and operate from a 3.3V supply. Two sizes of SDRAM memory are supported by STV0681, 16MBits ( bits wide) or 64MBits ( bits wide), the memory size is auto-detected by STV0681. STV0681 clocks the SDRAM at 6MHz, typically this is well below the figures offered by most manufacturers’ ...

Page 19

... Command ACTIVE A0-9,BA ROW A10 ROW CMS DQM DQ t RCD t H READ NOP COLUMN DOUT M READ Latency t RAS DQ sample ADCS 7283313C STV0681 Hardware Interfaces PRECHARGE NOP t CMH DOUT DOUT DOUT sample DQ sample DQ sample 19/44 ...

Page 20

... AS 4.2.3 SDRAM refresh period The SDRAM refresh period from STV0681 is guaranteed to be inferior or equal to 15.6 s during ‘Snapshot’/self-timer/continuous/tethered video modes of operation (that is not standby mode). In standby mode, the SDRAM is set to self-refresh, therefore no refresh from STV0681 takes place. 4.2.4 SDRAM initialisation period The SDRAM initialisation period is currently set to 981 s in STV0681 ...

Page 21

... This allows direct connection from STV0681 to a USB connector with minimal additional hardware (that is a small number of passive discretes) - see The USB interface interfaces the STV0681 to the USB at full speed 12MHz data rate. Some of the features are: Compliant with USB protocol revision 1.1. ...

Page 22

... This is to provide rejection of false start bits. If the start bit proves valid, reception of the rest of the frame proceeds. Transmitting data When a transmission is activated by STV0681, the contents of an internal transmit shift register are shifted onto the TXD pin, every 8.66 s. The UART operates at 12MHz, which is not an integer multiple of 115200, so the actual baud rate is 115232 +/- 0 ...

Page 23

... Power management and battery type STV0681 and the SDRAM require a 3.3V supply. When a VV6411 or VV6501 (3.3V) sensor is used, a single voltage regulator can regulate the supply for all three components from the battery, or the sensor on-board VReg can be used. These are explained more fully in the reference design. ...

Page 24

... Numeric LCD interface STV0681 supports a 2-digit LCD panel only, for alpha-numeric display. 4.7.1 LCD types STV0681 connects to a non multiplexed, direct drive LCD with segments. Many LCD types are compatible with this interface. The LCD refresh frequency is 34.7Hz. 4.7.2 LCD interface pinout ...

Page 25

... Audio Playback Hardware interface STV0681 outputs the desired signal level through the DAC output, which is amplified to the speaker or headphone socket. GPIO6 is used to switch off the amplifier during periods of audio recording, to prevent the successive approximation waveform from being heard during periods of recording, and to reduce the power consumption and unwanted crackle through the speaker ...

Page 26

... STV0681 Hardware Interfaces 4.9 Flashgun hardware interface STV0681 will revert to flashgun exposure when it detects GPIO2 is high. Ideally the hardware should combine the two factors of (a) user intention (e.g. user switches on flashgun) and (b) charge sensing (i.e. flash is charged up and ready to fire). These two factors (a) and (b) are independent, since there may be a delay of several seconds between switching on the flashgun charger, and the flashgun being able to fire ...

Page 27

... EEPROM to store certain information to allow a degree of customization of the device. The STV0681 reports a USB Vendor ID (VID) of 0553(hex) and a Product ID (PID) of 0202 (hex). Alternative values for the VID and PID as well as Manufacturer and Product strings may be stored in an external EEPROM. ...

Page 28

... Programming the EEPROM There is no facility to program the EEPROM using the STV0681 itself and so the device must be programmed before fitting it to the PCB. 28/44 Contents Leave blank VidLo, The low byte of the Vendor ID VidHi, The high byte of the Vendor ID ...

Page 29

... STV0681 6 Software support 6.1 General features The chipset is a dual-mode camera, i.e. stills and video, and is supported by a range of demonstration software, standard drivers, and software development options. PC Driver software is available to support both USB and RS232 interfaces. Drivers are available for TWAIN, WIA, Video for Windows (VfW) and DirectShow (DS) depending on the Operating System as listed below: Win98/Win98SE/WinME – ...

Page 30

... Table 5: Driver choices RS232 Microsoft Windows Win9x, WinNT4, Win2k, Windows Millennium Windows XP N/A Section 6.2.1 , hence allowing the OEM application to perform picture Section 6.2.2 allows the software developer to use these ADCS 7283313C STV0681 USB Microsoft Windows Win98 and Win2k only, Windows millenium Windows XP 8.6, 9.0, 9.1, 9 and ...

Page 31

... Raw Bayer Colour RGB bitmap Table 7: Approximate shutter speeds Min µs Table 8: STV0681 absolute maximum ratings Parameter ADCS 7283313C Detailed Chipset Specifications Max Range Units ° ...

Page 32

... includes V range =( RFM includes an external resistor of 20 Ohms serial to this transceiver. DRV 32/44 Table 9: STV0681 specifications Parameter Table 10: STV0681 USB specifications Description ADCS 7283313C Min. Typ. Max. 3.0 3.3 3 100TQFP (14x14x1.4) 1 000 000: 1 Min. Typ. Max. Units 3 ...

Page 33

... Crystal frequency Frequency tolerance Temperature stability Operating temperature Table 11: STV0681 DC characteristics Description Table 12: STV0681 PLL characteristics Conditions Symbol -- -- VDD VIL VIH Ready Tsr(Fout) Table 13: STV0681 crystal tolerance Min. Typ. 50/50/10/30 (12mhz Fundamental) 12.000 -10 ADCS 7283313C Detailed Chipset Specifications Min. Typ. Max. 0.35 VDD 0.65 VDD 2.15 1.05 1.65 2 ...

Page 34

... The following data assumes that the camera has been built according to reference design referred to in Chapter 10 . Figures are approximate and depend on actual components sources - see notes. The sensor operates at @ 3.3V DC Table 14: Current consumption, complete STV0681+VV6411/6501 camera Mode ’Snapshot’/Continuous/ Self timer mode (while un-tethered) ’ ...

Page 35

... LCD2_5 87 LCD2_4 88 LCD2_3 89 LCD2_2 90 LCD2_1 91 LCD2_0 92 LCD1_6 93 LCD1_5 94 LCD1_4 95 96 LCD1_3 LCD1_2 97 98 LCD1_1 LCD1_0 99 100 DQ_0 Figure 6: STV0681 pinout diagram STV0681 TQFP100 ADCS 7283313C STV0681 pin description RESET 50 XOUT 49 XIN 48 TEST2 47 TEST1 46 TEST0 45 USB- 44 USB+ 43 USB_DET 42 AD_4 41 AD_3 40 VDD 39 VSS ...

Page 36

... COMP_OUT 68 LED 67 AMP_ENABLE 66 FL_TRIG USB Interface 42 USBDET 43 DATA+ 44 DATA- 36/44 Table 15: STV0681 pin listing Type Output, active Power-up Sensor high Output, active low Reset Sensor Input/Output Sensor serial interface (OD,T) Input/Output Sensor serial interface (OD,T) Input (S,T) Sensor data Input (S,T) Sensor data Input (S,T) Sensor data ...

Page 37

... STV0681 Pin no. Signal RS232 Interface 54 TXD 55 RXD STV0680B Master Clocks and Reset 48 XIN 49 XOUT 50 RESET System Memory (SDRAM) Interface 20 DQMU 22 DCLK 24 CKE 32 AD0 34 AD1 36 AD2 40 AD3 41 AD4 37 AD5 35 AD6 33 AD7 31 AD8 29 AD9 30 AD10 27 AD11 26 AD12 Table 15: STV0681 pin listing Type Output ...

Page 38

... DQ12 5 DQ13 3 DQ14 1 DQ15 38/44 Table 15: STV0681 pin listing Type Output SDRAM address A13, BA1 for 64M SDRAM, unused on 16M Output, active low Chip select: enables (registered LOW) and disables (registered HIGH) the SDRAM command decoder. Output, active low SDRAM row address strobe command ...

Page 39

... LCD2_2 91 LCD2_1 92 LCD2_0 Piezo Interface 82 PIEZO Battery Level Comparator Interface 78 LO_BAT 77 LO_BAT_REF Table 15: STV0681 pin listing Type Output LCD Common Output LCD digit 1 segment G Output LCD digit 1 segment F Output LCD digit 1 segment E Output LCD digit 1 segment D Output LCD digit 1 segment C Output ...

Page 40

... Schmidt input A analogue input/output T 5V tolerant pad (these pads do not have diode protection) Note: 1 Where the I/O pad type is not explicitly defined, assume CMOS. 40/44 Table 15: STV0681 pin listing Type Power pin Digital Ground Power pin Digital Power Power pin Audio DAC Ground. Requires clean supply. ...

Page 41

... TQFP100M ADCS 7283313C STV0681 package mechanical data TQFP100 0.076mm .003 inch Seating Plane 41/44 ...

Page 42

... VV6411 CIF color CMOS sensor (36LCC package) VV6501 VGA color CMOS sensor (36LCC package) Complete Evaluation Kit STV0681 complete Evaluation Kit (includes STV-681-M01, STV-6411C-D01 and STV6501C-D01) Additional EVK Components Evaluation Kit Motherboard Sensor Daughter Board with VV6411 Sensor Daughter Board with VV6501 ...

Page 43

... STV0681 10.2 Technical support Technical support information, such as datasheets, software downloads,etc, for products of the STMicroelectronics Imaging Division can be found at General sales/technical enquiries can be directed to regional email contacts: asiapacific.imaging@st.com centraleurope.imaging@st.com france.imaging@st.com japan.imaging@st.com nordic.imaging@st.com southerneurope.imaging@st.com ukeire.imaging@st.com usa.imaging@st.com www ...

Page 44

... STV0681 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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