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VS6955CA PDF Datasheet - 5.0 megapixel fixed-focus camera module - STMicroelectronics

Part Number VS6955CA
Description 5.0 megapixel fixed-focus camera module
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 
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VS6955CA datasheet, circuit
VS6955CA
5.0 megapixel fixed-focus camera module
Features
5.0 megapixel resolution sensor (2600 x 1952)
inclusive of 4 border pixels each sides
SMIA Profile 1 compliant
compact size 6.5 mm x 6.5 mm x 4.6 mm
MIPI CSI-2 single lane interface (up to 1Gbps)
CCI command interface, supports up to
400 kHz
2.8V analog and 1.8V digital operation
supports 2 x 2 and 4 x 4 pixel binning
integrated 8-kbit OTP memory
ultra low power standby mode
on board couplet correction
Flex compatible
Datasheet - production data
Description
The VS6955CA is a high performance
5.0 megapixel fixed-focus camera module. It is
designed for use across a range of mobile phone
handsets and accessories. The sensor supports
high quality still camera functions as well as video
modes.
The VS6955CA is compliant with the MIPI CSI-2
specification. It is capable of generating raw
Bayer 5.0 megapixel images up to 23 fps with a
single CSI-2 lane. The VS6955CA offers an ultra
low power consumption hardware standby mode.
Table 1. Ordering information
Order code
Package
Packing
VS6955CAQ05I/1
SMIA65 Tape and reel
November 2015
This is information on a product in full production.
DocID028071 Rev 2
1/90
www.st.com

1 page

VS6955CA pdf, schematic
Contents
Contents
VS6955CA
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Module specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Device operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Power off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 Hardware standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.3 Software standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.4 Streaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1 Power-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Power-down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Ultra low power mode option (only for CSI-2) . . . . . . . . . . . . . . . . . . . . . 18
3.4 Internal power-on reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.5 External clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.5.1 PLL and clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.5.2 Clock input type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.6 Control and video interface formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.6.1 CCP/CSI-2 serial data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.6.2 CCI serial control bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Camera control interface (CCI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 Valid register data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Register default values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.1 Status registers [0x0000 to 0x001F] . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.2 Frame format description registers [0x0040 to 0x0049] . . . . . . . . . . . . 25
4.2.3 Analogue gain description registers [0x0080 to 0x0093] . . . . . . . . . . . . 26
4.2.4 Data format description registers [0x00C0 to 0x00C9] . . . . . . . . . . . . . 27
4.2.5 Setup registers [0x0100 to 0x0137] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.6 Integration and gain registers [0x0200 to 0x0215] . . . . . . . . . . . . . . . . . 30
4.2.7 Video timing registers [0x0300 to 0x0387] . . . . . . . . . . . . . . . . . . . . . . . 31
4.2.8 Scaler and digital crop registers [0x0400 to 0x040F] . . . . . . . . . . . . . . . 32
4.2.9 Compression setup registers [0x0500] . . . . . . . . . . . . . . . . . . . . . . . . . 33
2/90 DocID028071 Rev 2

2 Page

VS6955CA equivalent
VS6955CA
Contents
11 Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
12 Cosmetic inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
13 Packaging and delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
14 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
15 Acronyms and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
16 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
DocID028071 Rev 2
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5

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VS6955CA diode, scr
VS6955CA
1 Overview
Overview
The VS6955CA image sensor produces raw digital video data at up to 23 frames per
second. The sensor supports horizontal flip and vertical mirroring. Output frequency
can be derated as defined in the specification for power saving. Higher frame rate can
be achieved through analog binning and subsampling modes.
The image data is digitized using an internal 10-bit column ADC. The resulting pixel
data is output together with checksums and embedded codes for synchronization. The
interface conforms to MIPI CSI-2 interface standards.
The sensor is fully configurable through a CCI serial interface. Both the CSI-2 and CCI
interfaces are specified in a separate document: MIPI alliance standard for camera
serial interface 2 (CSI-2).
Feature
Pixel resolution
Sensor technology
Pixel size
Analog gain
Digital gain
Dynamic range
Signal to noise
Supply voltages
Typical power consumption
15 fps
Operating temperature
Storage temperature
Average dark current (60C)
Shading (60C)
Table 2. Technical specification
Detail
2600 x 1952 with border pixels
ST IMG140 FSI Gen2 based CMOS imaging process
1.4 µm x 1.4 µm
+ 24 dB
+ 6 dB
60 dB
36 dB (@ 100 lux)
Analog: 2.6 to 2.9V
Digital: 1.7 to 1.9 V
100 mA (typical)
-30°C to +70°C
-40°C to +85°C
25 e/s
12 e/s
DocID028071 Rev 2
9/90
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VS6955CA transistor, igbt
VS6955CA
Functional description
3.6
3.6.1
3.6.2
Control and video interface formats
Image data is transferred from the VS6955CA using a high speed subLVDS serial link.The
serial control data is transferred to and from the VS6955CA using a CCI bus.
CCP/CSI-2 serial data link
Data signals (DATA+ and DATA-) and clock signals (CLK+ and CLK-) are transferred from
VS6955CA using two pairs of balanced 100 Ω impedance transmission lines.
The transmission line pairs and custom transmitters/receivers realize a very low voltage
differential (subLVDS) signalling scheme that can transfer information in a potentially noisy
environment.
For the CCP link or CSI-2 single lane interface, the VS6955CA supports the transmission of
raw Bayer data at 5.0 Mpixel resolution up to 23 fps in RAW8 or 10-8 bit format.
CCI serial control bus
The internal registers in VS6955CA can be configured by a master device via a CCI bus
(SDA, SCL). VS6955CA sends and receives commands over this bus at up to 400 Kbits/s.
DocID028071 Rev 2
21/90
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