📝 Publications

1️⃣ Efficient Firmware

Journal
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[IEICE TE’21] Low-Power Fast Partial Firmware Update Technique of On-Chip Flash Memory for Reliable Embedded IoT Microcontroller
Jisu Kwon, Moon Gi Seok, and Daejin Park

  • Low-power, fast partial firmware update using function maps for efficient on-chip flash memory management.

  • Function map enables efficient updates by modifying block addresses without rewriting whole memory.

  • Reduces update time, energy use, and memory overhead in IoT microcontrollers.

Conference
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[IEEE COOLChips’20] User Insensible Sliding Firmware Update Technique for Flash-Area/Time-Cost Reduction toward Low-Power Embedded Software Replacement
Jisu Kwon, Moon Gi Seok, and Daejin Park

Slides | Video

  • User insensible sliding firmware update reduces flash memory usage and device pause time by updating only function blocks instead of entire firmware.

  • Achieves 63.64% memory overhead reduction, 79.98% pause time reduction, and 78.78% energy consumption reduction.


2️⃣ Efficient Hardware

Conference
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[VLSI-TSA’25] Sliding-Window-based Fast and Lightweight ADC Pseudo-Randomness Compensation Technique for Low-Cost ADC
Jisu Kwon, and Daejin Park Slides | Poster

  • Sliding-window-based ADC compensation reduces noise using neural networks.

  • Minimizes hardware usage, enhances ADC performance with software compensation.

  • Achieves 1.61× ENOB improvement, 5.82× processing time reduction under 20 dB noise.

Conference
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[IEEE MWSCAS’23] Hardware Accelerator Processing Element Unit Dynamic Pruning using Runtime RTL Simulation Reconfiguration
Jisu Kwon, Heuijee Yun, and Daejin Park

Poster

  • Dynamic MAC unit pruning reduces neural accelerator area and power consumption by removing inactive processing elements.

  • Empirical RTL simulation analyzes signal switching to optimize pruning while maintaining accuracy.

  • Achieves up to 9.78% signal switching reduction, 4.25% area savings, and only 1% accuracy loss.


3️⃣ SoC Verification

Journal
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[Applied Sciences’25] MAIL: Micro-Accelerator-in-the-Loop Framework for MCU Integrated Accelerator Peripheral Fast Prototyping
Jisu Kwon, and Daejin Park

  • Micro-Accelerator-in-the-Loop (MAIL) framework enables fast prototyping of MCU-integrated accelerators for TinyML.
  • Combines software emulation and cycle-accurate RTL simulation to evaluate hardware-software interaction.
  • Supports parameter exploration for optimizing accelerator performance and resource usage.
  • Reduces latency and improves efficiency in TinyML applications.
Conference
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[ACM/IEEE EMSOFT’23] Work-in-Progress: Micro-Accelerator-in-the-Loop Framework for MCU Integrated Accelerator Peripheral Fast Prototyping
Jisu Kwon, and Daejin Park

(BK21+ CS SCI Conference) | Slides | Poster

  • Micro-Accelerator-in-the-Loop (MAIL) framework enables fast prototyping of MCU-integrated accelerators.

  • Combines system emulation and cycle-accurate RTL simulation for efficient performance profiling.

  • Achieves up to 84.32% and 61.32% cycle latency reduction in TinyML applications.

Conference
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[IEEE ISCAS’21] Metamorphic Edge Processor Simulation Framework Using Flexible Runtime Partial Replacement of Software-Embedded Verilog RTL Models,
Jisu Kwon, Sejong Oh, and Daejin Park

Slides | Video

  • Metamorphic edge processor simulation framework accelerates RTL verification by replacing redundant models with software emulation.

  • Virtual layer enables dynamic partial RTL model replacement at runtime.

  • Achieves significant simulation speedup while maintaining parameter exploration flexibility.


4️⃣ TinyML

Journal
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[IEEE ESL’23] Efficient Partial Weight Update Techniques for Lightweight On-Device Learning on Tiny Flash-Embedded MCUs
Jisu Kwon, and Daejin Park

Slides | Poster | Video

  • Partial weight update technique reduces memory usage in on-device learning by updating only selected weights stored in flash.

  • Gradient-based selection minimizes accuracy loss while optimizing SRAM usage.

  • Achieves 76.1% accuracy with only 18.52% weight updates, reducing APDP by up to 46.9%.

Conference
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[HPC-Asia’21] Toward Data-Adaptable TinyML Using Model Partial Replacement for Resource Frugal Edge Device
Jisu Kwon, and Daejin Park

Poster | Video

  • Model partial replacement enables data-adaptable TinyML by updating only specific network components in resource-limited edge devices.

  • Reduces model size, maintains accuracy, and optimizes flash memory usage.

  • Enhances inference efficiency without full firmware updates.


️5️⃣️ Others


6️⃣ Domestic Journal Articles


7️⃣ Books and Chapters

Korean
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Low-Power Digital System Design - Practical Approach, TNES, 2021.
Daejin Park, and Jisu Kwon

  • This book covers low-power system-on-chip design methodologies and implementation techniques, from gate-level to architectural approach and software-hardware interfaces:
    • Toggle minimization in CMOS, gate, RTL, architecture, and software level.
    • Clock gating, data filtering-based toggle propagation minimization
    • Edge-triggered event-driven approach to reduce the active circuits
    • Multi-clock domain and asynchronous circuit design techniques using buffers.
    • Synchronizer between clock-crossing regions
    • Power-gating and architectural circuit design method