학술논문

A 9-mm2 Ultra-Low-Power Highly Integrated 28-nm CMOS SoC for Internet of Things
Document Type
Periodical
Source
IEEE Journal of Solid-State Circuits IEEE J. Solid-State Circuits Solid-State Circuits, IEEE Journal of. 53(3):936-948 Mar, 2018
Subject
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Computing and Processing
Process control
Logic gates
Clocks
Hardware
Phasor measurement units
Batteries
Computer architecture
Accelerator
Internet of Things (IoT)
near threshold
power management
sensor fusion
system on chip (SoC)
ultra-low power
Language
ISSN
0018-9200
1558-173X
Abstract
This paper gives an overview of the Blackghost 1.0 system-on-chip (SoC) from Qualcomm Research, which was our first test chip that paved the way toward the commercialization of Qualcomm’s most recent ultra-low-power Blackghost SoC family. Specifically designed for battery powered Internet of Things, sensor fusion, wearables, and e-medical applications, this highly integrated SoC delivers high-power efficiency through low-power innovations in architecture and circuit domains. It integrates a small footprint sensor control processor based on ARM Cortex-M0, a vision classifier processor, a streaming DSP hardware accelerator, an ultra-low-power analog-front-end, and an on-die power management unit with direct Li-Ion battery attach capability. The die size of this prototype chip is $3\times 3$ mm 2 in a 28LP CMOS process technology. To date, this SoC family has successfully progressed to the mass production of near-threshold computing. The logic computation operates at near-threshold voltages ( $9~\mu $ A/MHz from the directly attached battery.