Low Power Heart Rate Monitor

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PixArt Imaging Inc.

PMW3260DB Product Datasheet

Ultra Low Power LED Optical Mouse Sensor

Version 1.50 | 05 May 2016 | 11001AEN

PixArt Imaging Inc. http://www.pixart.com

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.

Introduction

1.1

Overview

PMW3260DB-TPOU is based on Optical Navigation Technology, which measures changes in position by optically

acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of

movement. PMW3260DB-TPOU contains an Image Acquisition System (IAS), a Digital Signal Processor (DSP), and a four

wire serial port. The IAS acquires microscopic surface images via the lens and illumination system. These images are

processed by the DSP to determine the direction and distance of motion. The DSP calculates the ΔX and ΔY relative

displacement values. An external microcontroller reads and translates the ΔX and ΔY information from the sensor serial

port into PS2, USB, or RF signals before sending them to the host PC.

Note: Throughout this document PMW3260DB-TPOU is referred to as the sensor.

Image

Array

DSP

LED Driver

Oscillator

Optical Mouse Sensor

XY_LED

SDIO

SCLK

NCS

MOTION

GND

VDD

VREG

Figure 1. Functional Block Diagram

1.2

Terminology

Term

Description

DSP

Digital Signal Processing

LED

Light Emitting Diode

NCS

Nen Chip Select

VREG

Internal Regulator Output

VDD

Supply voltage

SCLK

Serial Clock

SDIO

Serial Data In & Out

SPI

Serial Peripheral Interface

GND

Ground