Overview
This document describes the interfacing and the driving of the LUPA-300 image sensor. This VGA-resolution CMOS active pixel sensor features synchronous shutter and a maximal frame-rate of 250 fps in full resolution. The readout speed can be boosted by means of sub sampling and windowed Region Of Interest (ROI) readout. High dynamic range scenes can be captured using the double and multiple slope functionality. User programmable row and column start/stop positions allow windowing and sub sampling reduces resolution while maintaining the constant field of view and an increased frame rate. The programmable gain and offset amplifier maps the signal swing to the ADC input range. A 10-bit ADC converts the analog data to a 10-bit digital word stream. The sensor uses a 3-wire Serial-Parallel (SPI) interface. It operates with a 3.3V and 2.5V power supply and requires only one master clock for operation up to 80 MHz pixel rate. It is housed in an 48-pin ceramic LCC package.

Main Features
The main features of the image sensor are identified as:
• 640 x 480 active pixels (VGA resolution).
• 9.9 µm2 square pixels (based on the high-fill factor active
   pixel sensor technology of FillFactory (US patent No.
   6,225,670 and others)).
• Optical format: ½ optical inch
• Pixel rate of 80 MHz
• On-chip 10 bit ADCs
• Full snapshot shutter.
• Random programmable windowing.
• 48-pin LCC package
• Sub sampling (Y direction)
• Programmable read out direction (X and Y)