microwatt embedded processor platform for medical system-on-chip

7/27/2019 Microwatt Embedded Processor Platform for Medical System-On-Chip

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MICROWATT EMBEDDED PROCESSOR

PLATFORM FOR MEDICAL SYSTEM-ON-CHIPAPPLICATIONS

Presented By

VINEETH .P.P

S7 AEI

Roll No:- 64


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AIM OF PRESENTATION

To introduce the new optimized SOC platform

To explore the architectural components

To explore the implementation details

To explain advantage of this new hardware platform

To explain applications of this new hardware platform

and epileptic seizure detection


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INTRODUCTION

This is an optimized hardware platform

specifically designed for medical applications. It is

capable of ULV operations.

The novel system architecture and

design make it exactly suitable for medical

applications.


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THE MEDICAL PLATFORM SOC INCLUDES

An ARM Cortex M3 core

Radix 2 FFT accelerator

Memory Subsystem

DC-DC Converter

Peripherals and GPIO


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SYSTEM ARCHITECTURE


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ARM CortexM3 core

32 Bit ARM v7 M architecture

The clock frequency is between 10-100KHz

Very low interrupt latency

Very low power consumption ~ 90nW

FFT Accelerator

16 bit architecture and achieves 65 dB SQNR

Block floating point architecture for optimizing data bitwidths

Consumes 100nJ to compute 256 pt real FFT

2x reduction in power for real FFT


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Energy as a function of FFT throughput relative to

4-cycle butterfly at 1.1v


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6T SRAM

Works at 0.5v

Area optimized 1.95um design

Multi purpose header for

reliable write assist , power

off feature ,retention-till-

access Average active power dissipation

is 5nW/kHz and 28fW/bit

on data holding


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SRAM bit cell noise margins


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Peripherals & GPIO

Multichannel SPI interface for ADC

GPIO can sense voltages of sub-threshold range

Very low leakages at GPIO

DC-DC Converter

Can deliver power at ultra low load levels (~ 1uW)

The efficiency is about 72% at 1uw load

Ring oscillator / Process sensor provides intelligenceto converter, self tuning

Low power analog and digital control circuit


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DC-DC Converter


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Measured efficiency versus load power of dc-dc

converter


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CHIP IMPLEMENTATION

Implemented in 0.13um standard CMOS technology

Optimized for low gate capacitance and leakage

currents

Extensive clock is used to reduce active and

standby power


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CHIP MICROPHOTOGRAPH


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SOC METRICS


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ADVANTAGES

Ultra low power operation , single battery source canpower more than 10 years

Easy to design and develop systems

Highly efficient execution of signal processingalgorithms

Highly reliable

Can be used in implantable devices

No harm to human body parts


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APPLICATIONS


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EPILEPTIC SEIZURE DETECTION


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CONCLUSION

The system architecture ,microarchitecture circuit

design, digital implementation & fabrication processused to develop this SOC platform makes it reliableand capable of ULV operations

The SOC platform is optimized for medicalapplications in all aspects

The ultra low power consumption of SOC extends thebattery life of health devices

This ultra low power SOC enables advanced signalprocessing algorithms for next generation batterypowered medical devices


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THANK

YOU

microwatt embedded processor platform for medical system-on-chip

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