A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus

A. Arnaud; M. Miguez; J. Gak; R. Puyol; R. Garcia-Ramirez; E. Solera-Bolanos; R. Castro-Gonzalez; R. Molina-Robles; A. Chacon-Rodriguez; R. Rimolo-Donadio

doi:10.1109/LASCAS45839.2020.9068969

A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus

A. Arnaud, M. Miguez, J. Gak, R. Puyol, R. Garcia-Ramirez, E. Solera-Bolanos, R. Castro-Gonzalez, R. Molina-Robles, A. Chacon-Rodriguez, R. Rimolo-Donadio

Department of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

10 Scopus citations

Abstract

A RISC-V based System on Chip (SoC) for high voltage and current tissue stimulus, targeting implantable medical devices, is presented. The circuit is designed in a 0.18μm HV-CMOS process, including the RISC-V 32RVI based microcontroller core, called Siwa - which includes SPI, UART and GPIO interfaces, a packet-based bus and memory controller, and 8kB SRAM - , combined with several biological tissue stimulus and sensing circuits. The complete test chip (analog+RISC-V) occupies a 5mm² area but only 0.82mm² correspond to the RISC-V micro-controller, which operates up to 20MHz, with average energy needs of less than 48 pJ/cycle (3pJ STD), and for which several reliability and safety issues were considered.

Original language	English
Title of host publication	2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728134277
DOIs	https://doi.org/10.1109/LASCAS45839.2020.9068969
State	Published - Feb 2020
Event	11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020 - San Jose, Costa Rica Duration: 25 Feb 2020 → 28 Feb 2020

Publication series

Name	2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020

Conference

Conference	11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020
Country/Territory	Costa Rica
City	San Jose
Period	25/02/20 → 28/02/20

Keywords

CMOS HV
Implantable medical devices
RISC-V
biomedical circuits
current sources
level shiters

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10.1109/LASCAS45839.2020.9068969

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Arnaud, A., Miguez, M., Gak, J., Puyol, R., Garcia-Ramirez, R., Solera-Bolanos, E., Castro-Gonzalez, R., Molina-Robles, R., Chacon-Rodriguez, A., & Rimolo-Donadio, R. (2020). A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus. In 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020 Article 9068969 (2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/LASCAS45839.2020.9068969

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abstract = "A RISC-V based System on Chip (SoC) for high voltage and current tissue stimulus, targeting implantable medical devices, is presented. The circuit is designed in a 0.18μm HV-CMOS process, including the RISC-V 32RVI based microcontroller core, called Siwa - which includes SPI, UART and GPIO interfaces, a packet-based bus and memory controller, and 8kB SRAM - , combined with several biological tissue stimulus and sensing circuits. The complete test chip (analog+RISC-V) occupies a 5mm2 area but only 0.82mm2 correspond to the RISC-V micro-controller, which operates up to 20MHz, with average energy needs of less than 48 pJ/cycle (3pJ STD), and for which several reliability and safety issues were considered.",

keywords = "CMOS HV, Implantable medical devices, RISC-V, biomedical circuits, current sources, level shiters",

author = "A. Arnaud and M. Miguez and J. Gak and R. Puyol and R. Garcia-Ramirez and E. Solera-Bolanos and R. Castro-Gonzalez and R. Molina-Robles and A. Chacon-Rodriguez and R. Rimolo-Donadio",

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year = "2020",

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Arnaud, A , Miguez, M , Gak, J, Puyol, R, Garcia-Ramirez, R, Solera-Bolanos, E, Castro-Gonzalez, R, Molina-Robles, R, Chacon-Rodriguez, A & Rimolo-Donadio, R 2020, A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus. in 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020., 9068969, 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020, Institute of Electrical and Electronics Engineers Inc., 11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020, San Jose, Costa Rica, 25/02/20. https://doi.org/10.1109/LASCAS45839.2020.9068969

A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus. / Arnaud, A.; Miguez, M.; Gak, J. et al.
2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020. Institute of Electrical and Electronics Engineers Inc., 2020. 9068969 (2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Miguez, M.

AU - Gak, J.

AU - Puyol, R.

AU - Garcia-Ramirez, R.

AU - Solera-Bolanos, E.

AU - Castro-Gonzalez, R.

AU - Molina-Robles, R.

AU - Chacon-Rodriguez, A.

AU - Rimolo-Donadio, R.

PY - 2020/2

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N2 - A RISC-V based System on Chip (SoC) for high voltage and current tissue stimulus, targeting implantable medical devices, is presented. The circuit is designed in a 0.18μm HV-CMOS process, including the RISC-V 32RVI based microcontroller core, called Siwa - which includes SPI, UART and GPIO interfaces, a packet-based bus and memory controller, and 8kB SRAM - , combined with several biological tissue stimulus and sensing circuits. The complete test chip (analog+RISC-V) occupies a 5mm2 area but only 0.82mm2 correspond to the RISC-V micro-controller, which operates up to 20MHz, with average energy needs of less than 48 pJ/cycle (3pJ STD), and for which several reliability and safety issues were considered.

AB - A RISC-V based System on Chip (SoC) for high voltage and current tissue stimulus, targeting implantable medical devices, is presented. The circuit is designed in a 0.18μm HV-CMOS process, including the RISC-V 32RVI based microcontroller core, called Siwa - which includes SPI, UART and GPIO interfaces, a packet-based bus and memory controller, and 8kB SRAM - , combined with several biological tissue stimulus and sensing circuits. The complete test chip (analog+RISC-V) occupies a 5mm2 area but only 0.82mm2 correspond to the RISC-V micro-controller, which operates up to 20MHz, with average energy needs of less than 48 pJ/cycle (3pJ STD), and for which several reliability and safety issues were considered.

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KW - Implantable medical devices

KW - RISC-V

KW - biomedical circuits

KW - current sources

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T3 - 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020

BT - 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020

Y2 - 25 February 2020 through 28 February 2020

ER -

Arnaud A , Miguez M , Gak J, Puyol R, Garcia-Ramirez R, Solera-Bolanos E et al. A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus. In 2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020. Institute of Electrical and Electronics Engineers Inc. 2020. 9068969. (2020 IEEE 11th Latin American Symposium on Circuits and Systems, LASCAS 2020). doi: 10.1109/LASCAS45839.2020.9068969

A RISC-V Based Medical Implantable SoC for High Voltage and Current Tissue Stimulus

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