Datasheet

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MT9D111__2_REV5.fm - Rev. B 2/06 EN
9 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
General Description
Micron Confidential and Proprietary
General Description
Micron
®
Imaging MT9D111 is a 1/3.2 inch 2-megapixel CMOS image sensor with an
integrated advanced camera system. The camera system features a microcontroller
(MCU) and a sophisticated image flow processor (IFP) with a real-time JPEG encoder. It
also includes a programmable general purpose I/O module (GPIO), which can be used
to control external auto focus, optical zoom, or mechanical shutter.
The microcontroller manages all components of the camera system and sets key opera-
tion parameters for the sensor core to optimize the quality of raw image data entering
the IFP. The sensor core consists of an active pixel array of 1668 x 1248 pixels, program-
mable timing and control circuitry including a PLL and external flash support, 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 require-
ments and superior low-light performance that is particularly suitable for mobile appli-
cations.
The excellent low-light performance of MT9D111 is one of the hallmarks of DigitalClar-
ity™—Micron's breakthrough low-noise CMOS imaging technology that achieves CCD
image quality (based on signal-to-noise ratio and low-light sensitivity) while maintain-
ing the inherent size, cost, power consumption, and integration advantages of CMOS.
Feature Overview
The MT9D111 is a color image sensor with a Bayer color filter arrangement. Its basic
characteristics are described in Table 1, "Key Performance Parameters," on page 1.
The MT9D111 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 MT9D111 to run at almost any desired resolution and
frame rate. To reduce power consumption, the PLL can be bypassed and powered down.
Low power consumption is a very important requirement for all components of wireless
devices. The MT9D111 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 MT9D111 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 MT9D111 provide a variety of
ways to enhance and optimize the image sensor performance. Built-in optimization
algorithms enable the MT9D111 to operate at factory settings as a fully automatic, highly
adaptable camera. However, most of its settings are user-programmable.