Post on 02-Apr-2018
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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