Preliminary
MT9D131: 1/3.2-Inch 2-Mp SOC Digital Image Sensor
General Description
General Description
Micron Imaging MT9D131 is a 1/3.2 inch, 2-megapixel CMOS image sensor with an inte-
grated advanced camera system. The camera system features a microcontroller (MCU)
and a sophisticated image flow processor (IFP) with a real-time JPEG encoder.
The sensor core consists of an active pixel array of 1668 x 1248 pixels, programmable
timing and control circuitry including a PLL, analog signal chain with automatic offset
correction and programmable gain, and two 10-bit A/D converters (ADC). The entire
system-on-a-chip (SOC) has ultra-low power requirements and superior low-light per-
formance that is particularly suitable for a wide variety of applications.
Feature Overview
The MT9D131 is a color image sensor with a Bayer color filter arrangement.
The MT9D131 has an embedded phase-locked loop oscillator (PLL) that can be used
with the common wireless system clock. When in use, the PLL adjusts the incoming
clock frequency, allowing the MT9D131 to run at almost any resolution and frame rate.
To reduce power consumption, the PLL can be bypassed and powered down. The
MT9D131 has numerous power conserving features, including an ultra-low power
standby mode and the ability to individually shut down unused digital blocks.
Another important consideration for wireless devices is their electromagnetic emission
or interference (EMI). The MT9D131 has a programmable I/O slew rate to minimize its
EMI and an output FIFO to eliminate output data bursts.
The advanced IFP and flexible programmability of the MT9D131 provide a variety of
ways to enhance and optimize the image sensor performance. Built-in optimization
algorithms enable the MT9D131 to operate at factory settings as a fully automatic, highly
adaptable camera. However, most of its settings are user-programmable by changing
register values.
Figure 1 illustrates the MT9D131 quantum efficiency in relation to wavelength.
Figure 1:
MT9D131 Quantum Efficiency
40
Quantum Efficiency vs. Wavelen g th
Blue
35
Green
Red
30
25
20
15
10
5
0
350
450
550
650
750
850
950
1050
PDF: 09005aef824c90ce/Source: 09005aef824c90d6
MT9D131_LDS_2.fm - Rev. B 3/07 EN
2
Micron Technology, Inc., reserves the right to change products or specifications without notice.
?2006 Micron Technology, Inc. All rights reserved.
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