jhc3261@unist.ac.kr
Hoichang Jeong
Ph. D. Candidate
Introduction
Hoichang Jeong received the B.S., M.S., and Ph.D. degrees in Electrical Engineering from the Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea, in 2019, 2021, and 2026, respectively. He is currently a PostDoctoral Researcher with the School of Electrical and Electronics Engineering, Yonsei University, Seoul, South Korea.
Education
2015.03 ~ 2019 B.S. in Electronic Engineering at UNIST
2019 ~ 2021 M.S. in Electrical Engineering at UNIST
2021.09 ~ 2026.02 Ph.D. in Electrical Engineering at UNIST
Research Interest
Processing in Memory
Computing in Memory
Analog Computing
International Conference
Circuit
Processing-in-memory
Neural Processor
HCNP: A 70.2 TOPS/W Hybrid CIM-NPU Processor with In-Streaming Processing for Energy-Efficient CNN/Transformer Acceleration in HMD
IEEE Symposium on VLSI Technology and Circuits, Jun. 2026
Seungbin Kim*, Hoichang Jeong*, Dongwook Kim, Jiwon Kim, and Kyuho Jason Lee (*equal contribution)
Circuit
Processing-in-memory
A 30.7 TOPS/W Sparsity-Aware Analog-Digital Hybrid eDRAM CIM by Effective Row Activation with Simultaneous Multi-Row-Multi-Task Control 
IEEE European Solid-State Electronics Research Conference, Sept. 2025
Hoichang Jeong*, Seungbin Kim*, Jueun Jung, and Kyuho Jason Lee (*equal contribution)
Circuit
Processing-in-memory
Large-language-Model
A 46 TOPS/W In-/Near-Memory Computing Processor for Large Language Model with Extended Sparse Attention
IEEE International Symposium on Circuits and Systems, May 2025
Sunhong An, Hoichang Jeong, Seungbin Kim, Keonhee Park, Dongwook Kim, and Kyuho Lee
Circuit
Processing-in-memory
Keyword Spotting
A 0.74 uJ/decision and 22.59 TOPS/W Keyword Spotting CIM Processor with Short-Current-Free Multi-level ReRAM and Adaptive-Decision-Level Nonlinear ADC
IEEE International Symposium on Circuits and Systems, May 2025
Dongwook Kim, Hoichang Jeong, Keonhee Park, Seungbin Kim, Sunhong An, and Kyuho Lee
Circuit
Processing-in-memory
A 273.48 TOPS/W and 1.58 Mb/mm2 Analog-Digital Hybrid CIM Processor with Transpose Ternary-eDRAM Bitcell
IEEE Asian Solid-State Circuits Conference, Nov. 2024
Hoichang Jeong, Seungbin Kim, Jeongmin Shin, Keonhee Park, and Kyuho Jason Lee
Circuit
Processing-in-memory
A 28-nm 323 TOPS/mm2/b and 2007 TOPS/W/b Ternary Latch Based Sparsity-Aware CIM Macro With Double-Sampling Ternary ADC
IEEE Asian Solid-State Circuits Conference, Nov. 2024
Myoung Kim, Hoichang Jeong, Woo-Seok Kim, Yesong Jeong, Young-Eun Choi, Junyoung Park, Min Woo Ryu, Yong Kyu Lee, Kyuho Jason Lee, and Kyung Rok Kim
Circuit
Processing-in-memory
DPIM: A 19.36TOPS/W 2T1C eDRAM Transformer-in-Memory Chip with Sparsity-Aware Quantization and Heterogeneous Dense-Sparse Core
IEEE European Solid-State Electronics Research Conference, Sept. 2024
Donghyuk Kim, Jae-Young Kim, Hyunjun Cho, Seungjae Yoo, Sukjin Lee, Sungwoong Yune, Hoichang Jeong, Keonhee Park, Ki-soo Lee, Jongchan Lee, Chanheum Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, Kyuho Lee, Joo-Hyung Chae, Kunhee Cho, and Joo-Young Kim
Circuit
PointCloud Neural Network
Lidar
Processing-in-Memory
A Low-power 3D Point Clouds Matching Processor with 1D-CNN Prediction and CAM-based In-memory kNN Searching
IEEE International Conference on Artificial Intelligence Circuits and Systems, Apr. 2024
Jeongmin Shin, Hoichang Jeong, Seungbin Kim, Keonhee Park, Sangho Lee, and Kyuho Lee
Circuit
Processing-in-memory
A 701.7 TOPS/W Time-Domain Spiking Neural Network Compute-in-Memory Processor with 9T1C Bitcell
IEEE International Midwest Symposium on Circuits and Systems, Aug. 2023
Keonhee Park, Hoichang Jeong, and Kyuho Lee
Circuit
Processing-in-memory
A Ternary Neural Network Computing-in-Memory Processor with 16T1C Bitcell Architecture
IEEE International Symposium on Circuits and Systems, May 2023
Hoichang Jeong, Keonhee Park, and Kyuho Lee
Circuit
3D-CNN
A Real-Time Sparsity-Aware 3D-CNN Processor for Mobile Hand Gesture Recognition
IEEE International Conference on Artificial Intelligence Circuits and Systems, Jun. 2022
Seungbin Kim, Jueun Jung, Wuyoung Jang, Hoichang Jeong, and Kyuho Lee
Circuit
Automotive System
An Energy-Efficient CNN Accelerator for Multi-object Real-Time Semantic Segmentation in Autonomous Vehicle
IEEE International Symposium on Circuits and Systems, May 2022
Jueun Jung, Seungbin Kim, Wuyoung Jang, Hoichang Jeong, and Kyuho Lee
Domestic Conference
Ternary Neural Network 가속을 위한 Ternary Processing-In-Memory Processor
제 5회 반도체공학회 종합학술대회 및 정기총회, Dec. 2022
정회창, 박건희, 이규호
Bitcell 기반 Ternary MAC Processing-In-Memory
2022년도 반도체공학회 하계학술대회, Jul. 2022
정회창, 박건희, 이규호
Journal Publication
Circuit
Processing-in-memory
SERAH-CIM: Sparsity-Aware Effective Row Activation Analog-Digital Hybrid eDRAM CIM with In-Macro Multi-Row-Multi-Task Control
IEEE Journal of Solid-State Circuits (JSSC), (Early Access), 2026
Hoichang Jeong*, Seungbin Kim*, Dongwook Kim, Jueun Jung, and Kyuho Jason Lee (*equal contribution)
Circuit
Processing-in-memory
HYTEC: Compact and Energy-Efficient Analog-Digital Hybrid CIM With Transpose Ternary eDRAM
IEEE Journal of Solid-State Circuits (JSSC), (Early Access), 2026
Hoichang Jeong, Seungbin Kim, Jeongmin Shin, and Kyuho Jason Lee
Circuit
Processing-in-memory
Large-language-Model
CINELL: An Energy-Efficient Compute-in/near-Memory eDRAM Processor for Sparse Transformer-Based Large Language Models
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 34, no. 1, pp. 242-253, Jan. 2026
Sunhong An, Hoichang Jeong, Seungbin Kim, and Kyuho Jason Lee
Circuit
Processing-in-memory
DPIM: A 2T1C eDRAM Transformer-in-Memory Chip with Sparsity-Aware Quantization and Heterogeneous Dense-Sparse Core
IEEE Journal of Solid-State Circuits (JSSC), vol. 61, no. 5, pp. 2349-2364, May 2026
Donghyuk Kim, Jae-Young Kim, Hyunjun Cho, Seungjae Yoo, Sukjin Lee, Sungwoong Yune, Sejeong Yang, Hoichang Jeong, Keonhee Park, Ki-Soo Lee, Jongchan Lee, Chanheum Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, Kyuho Jason Lee, Joo-Hyung Chae, Kunhee Cho, and Joo-Young Kim
Circuit
Processing-in-memory
A Multibit ReRAM Computing-in-Memory Processor with Adaptive Decision Level Nonlinear ADC for Ultra-low-energy Keyword Spotting in Mobile Devices
IEEE Transactions on Circuits and Systems I (T-CAS I): Regular Papers, vol. 73, no. 2, pp. 862-874, Feb. 2026
Dongwook Kim, Hoichang Jeong, Seungbin Kim, Heein Yoon, and Kyuho Jason Lee
Circuit
Processing-in-memory
PointCloud Neural Network
Lidar
C<sup>2</sup>IM-NN: A Low-power 3D Point Clouds Matching Processor with 1D-CNN Prediction and CAM-based In-memory k-NN Searching
IEEE Transactions on Circuits and Systems I (T-CAS I): Regular Papers, vol. 72, no. 7, pp. 3286-3297, Jul. 2025
Jeongmin Shin, Hoichang Jeong, Seungbin Kim, Keonhee Park, Sangho Lee, and Kyuho Jason Lee
Circuit
Processing-in-memory
A 701.7 TOPS/W Compute-in-Memory Processor with Time-Domain Computing for Spiking Neural Network
IEEE Transactions on Circuits and Systems I (T-CAS I): Regular Papers, vol. 72, no. 1, pp. 25-35, Jan. 2025
Keonhee Park, Hoichang Jeong, Seungbin Kim, Jeongmin Shin, Minseo Kim, and Kyuho Jason Lee
Circuit
Processing-in-memory
A Ternary Neural Network Computing-in-Memory Processor with 16T1C Bitcell Architecture
IEEE Transactions on Circuits and Systems II (T-CAS II): Express Briefs, vol. 70, no. 5, pp. 1739-1743, May 2023
Hoichang Jeong, Seungbin Kim, Keonhee Park, Jueun Jung, and Kyuho Lee
Awards
2
2024 IEEE Artifical Intelligence Circuits and Systems (AICAS), Best Student Paper Award (2024.4)
신정민, 정회창, 김승빈, 박건희, 이상호, 이규호
1
2022 IDEC Congress CDC 우수포스터상, Siemens EDA (2022.7)
정회창, 정주은, 김승빈, 이규호
Patents
6
삼진 뉴럴 네트워크 연산 가속을 위한 컴퓨팅 인 메모리 장치
<strong style="color:blue;">Filed to</strong> Korean Patent No. 10-2023-0175539, December 06
Hoichang Jeong and Kyuho Lee