ICM105B VGA CMOS sensor
Data Sheet V1.6, August 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
10/16/2002
web site:
http://www.ic-media.com/
web site:
http://www.ic-media.com.tw/
page 1
Confidential
ICM105B
Color VGA CMOS Image Sensor
Data Sheet
V1.6
August 2002
IC Media Corporation
545 East Brokaw Road
San Jose, CA 95112, U.S.A.
Phone: (408) 451-8838
Fax: (408) 451-8839
Email: Sales@IC-Media.Com
Web Site:
www.ic-media.com
IC Media Technology Corporation
6F, No. 61, ChowTze Street., NeiHu District
Taipei, Taiwan, R.O.C.
Phone: 886-2-2657-7898
Fax: 886-2-2657-8751
Email: Ap.Sales@IC-Media.Com.tw
Web Site: www.ic-media.com.tw
Important notice: This document contains information of a new product. IC
Media Corp reserves the right to make any changes without further notice to any
product herein to improve design, function or quality and reliability. No
responsibility is assumed by IC Media Corp for its use, nor for any infringements
of patents of third parties, which may result from its use.
ICM105B VGA CMOS sensor
Data Sheet V1.6, August 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
10/16/2002
web site:
http://www.ic-media.com/
web site:
http://www.ic-media.com.tw/
page 2
Confidential
Features
· 307,200 (640x480) pixels, VGA format, used with 1/4" optical system
· Progressive readout
· Output data format: 8-bit raw data
· Control interface: SIF
· Electronic exposure control
· On-chip 9-bit ADC
· Correlated double sampling
· Separate RGB gain
· Dead column removal
· Power down mode
· Automatic optical black compensation
· Support both master and slave mode
· Horizontal and vertical images
· Single 3.3 V power supply
General Description
ICM-105B is a single-chip digital color imaging device. It incorporates a 640x480 sensor array (650x490
in physical layout) operating at 1 ~ 30 frames per second in progressive manner. Each pixel is covered by a
color filter, which formed a so-called Bayer pattern. Correlated double sampling is performed by the
internal ADC and timing circuitry. The raw data can be adjusted by the digital gain. The output format is
8-bit raw data which can be fed to other DSP, color processing, or compression chips.
Application
· Digital camcorder
· Digital still camera
· Video phone
· Video conferencing
· Video mail
· Video cellular phone
· PC camera
· Security system
· Visual toy
· Industrial image capture/analysis
· Environment monitor system
Key Parameters
· Number of Active Pixels: 640x480
· Number of Physical Pixels: 650x490
· Frame Rate: 30/20/15/12/10/6/5/4/3/2/1 fps
· Pixel Size: 6.0 µm x 6.0 µm
· Sensor Area: 3.84 mm x 2.88 mm
ICM105B VGA CMOS sensor
Data Sheet V1.6, August 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
10/16/2002
web site:
http://www.ic-media.com/
web site:
http://www.ic-media.com.tw/
page 3
Confidential
· Main Clock Frequency: 24 MHz
· Exposure Time: 64 µs (@ 30 fps, 1 line, 24 MHz) ~ 126 s (@ 1 fps, 65535 lines, 24 MHz)
· Sensitivity: 1.0 V/lux-sec (555 nm)
· Quantum Efficiency: 38 % (555 nm)
· Dynamic Range: 55 dB (analog), 48 dB (digital)
· Digital Gain: 1 ~ 64 x
· Fill Factor: 36%
· S/N Ratio: 45 dB @ 75% full signal level
· Sensitive to infrared illumination source
· Power Supply: 3.3 V
· Power Requirement: 25 mA (@ 30fps, 24 MHz), 14 mA (@ 15 fps, 12 MHz)
· Package: Shrunk Plastic LCC48
ICM105B VGA CMOS sensor
Data Sheet V1.6, August 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
10/16/2002
web site:
http://www.ic-media.com/
web site:
http://www.ic-media.com.tw/
page 4
Confidential
1. Pin Assignment
Pin #
Name
Class*
Function
14
CLKSEL
D, I, N Clock source selection. 0: internal oscillator, 1: CLKIN
11
CLKIN
D, I, N External clock source
12
XIN
A, I
Oscillator in
13
XOUT
A, O
Oscillator out
34
PCLK
D, O
Pixel clock output
36
OEN
D, I, N Output enable. 0: enable, 1: disable
32
SIFCID
D, I, N Lsb of SIF slave address
33
SIFCMS
D, I, U SIF master/slave selection. 0: slave, 1: master (auto load
from EEPROM after reset)
2
SCL
D, I/O
SIF clock
1
SDA
D, I/O
SIF data
10
POWERDN
D, I, U Power down control, 0: power down, 1: active
16 RSET
A,
I
Resistor to ground = 47 K
@ 24 MHz main clock, 51
K
@ 24 MHz
8
RSTN
D, I, U Chip reset, active low
48
DOUT[7]
D, O
Data output bit 7
47
DOUT[6]
D, I/O
Data output bit 6; if pulled up/down, the initial value of
TIMING_CONTROL_LOW[2] (VSYNC polarity) is 1/0
46
DOUT[5]
D, I/O
Data output bit 5; if pulled up/down, the initial value of
TIMING_CONTROL_LOW[1] (HSYNC polarity) is 1/0
44
DOUT[4]
D, I/O
Data output bit 4; if pulled up/down, the initial value of
AD_IDL[3] (Sub ID) is 1/0
41
DOUT[3]
D, I/O
Data output bit 3; if pulled up/down, the initial value of
AD_IDL[2] (Sub ID) is 1/0
39
DOUT[2]
D, I/O
Data output bit 2; if pulled up/down, the initial value of
AD_IDL[1] (Sub ID) is 1/0
38
DOUT[1]
D, I/O
Data output bit 1; if pulled up/down, the initial value of
AD_IDL[0] (Sub ID) is 1/0
37
DOUT[0]
D, I/O
Data output bit 0; if pulled up/down, the synchronization
mode is in master/slave mode which requires HSYNC
and VSYNC operating in output/input mode
3
HSYNC
D, I/O
Horizontal sync signal
5
VSYNC
D, I/O
Vertical sync signal
35
FLASH
D, O
Flash light control
15
RAMP
A, O
Analog ramp output
7, 31
VDDA
P
Sensor analog power
9, 30
GNDA
P
Sensor analog ground
19
VDDD
P
Sensor digital power
17
GNDD
P
Sensor digital ground
4, 43
VDDK
P
Digital power
6, 45
GNDK
P
Digital ground
40
VDDO
P
Pad power
42 GNDO
P
Pad
ground
18 GNDS
P
Substrate
ground
Class Code: A Analog signal, D Digital signal, I Input, O Output, P Power or ground, U Internal
pull-up, N Internal pull-down
ICM105B VGA CMOS sensor
Data Sheet V1.6, August 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
10/16/2002
web site:
http://www.ic-media.com/
web site:
http://www.ic-media.com.tw/
page 5
Confidential
2. Functional Description
ICM-105B is a single-chip digital color imaging device. It includes a 640x480 sensor array, 640 column-
level ADC, and correlated double sampling circuitry. All the programmable parameters are set by writing
into the SIF interface which can address the register file consisting of 8-bit registers. The output format is
8-bit raw data, together with horizontal and vertical sync signals.
Figure 1. Block diagram
2.1 Image Array
The image array consists of 640x480 pixels. Each pixel has a light sensitive photo diode and a set of
control and transfer transistors. At the beginning of the cycle, a row of pixels are pre-charged to its
maximum value. Then they are exposed to light for several lines worth of time and sampled by the ADC.
Correlated double sampling (CDS) is performed by subtracting the reset value (sampled right before
sampling the signal) from the signal value. The purpose of CDS is to eliminate the point-wise fixed pattern
noise (FPN). The output of CDS is approximately proportional to the amount of received light, ranging
from 0 to 255.
2.2 Color Filter
Each pixel is covered by a color filter. They form the Bayer Pattern as shown in Figure 2. (Row 0,
Column 0) is covered by a Red filter, (Row 0, Column 1) and (Row 1, Column 0) by Green filters, and
(Row 1, Column 1) by a Blue filter. Since each pixel only gets part of the frequency band, the data need
further processing (i.e., color interpolation and color correction) in order to approximate the full visible
spectrum.
Sensor Array
640x480
Column-Level
ADC
Correlated
Double
Sampling
Timing
Control
SIF
Interface
Output Control
Digital
Gain
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