---
title: "W5500 vs ENC28J60: Which SPI Ethernet Controller Wins?"
url: "https://maker.wiznet.io/mason/projects/w5500-vs-enc28j60-which-spi-ethernet-controller-wins/"
markdown_url: "https://maker.wiznet.io/mason/projects/w5500-vs-enc28j60-which-spi-ethernet-controller-wins/md"
type: "UCC: User Created Content"
author: "Alex Carter"
author_url: "https://www.chipmall.com/blogs/w5500-vs-enc28j60_122"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Alex Carter"
original_url: "https://www.chipmall.com/blogs/w5500-vs-enc28j60_122"
published: "2025-12-02"
language: "en"
tags: ["W5500"]
hardware: ["WIZnet W5500"]
likes: 0
views: 2401
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# W5500 vs ENC28J60: Which SPI Ethernet Controller Wins?

> W5500 vs ENC28J60: Which SPI Ethernet Controller Wins?

Original author: Alex Carter (source: https://www.chipmall.com/blogs/w5500-vs-enc28j60_122)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

## 개요

임베디드 제품에서 이더넷 컨트롤러 선택은 단순 스펙 경쟁이 아닙니다. 실제로는 **펌웨어 복잡도**, **개발·검증 기간**, **생산 단가**, **장기 유지보수 리스크**가 성공 여부를 가릅니다. 이 글은 WIZnet **W5500**과 Microchip **ENC28J60**를 동일 조건에서 비교해, 숫자 스펙을 넘어 **오프로딩 유무(TCP/IP 하드웨어 스택)**, **버퍼 구조**, **SPI 효율**, **EMI·인증 난이도** 등 실무 의사결정 요소 다루고 있습니.

우리 MCU·펌웨어 리소스에 맞는 컨트롤러는 무엇인가?
OTA/웹 대시보드/스트리밍 등 **응답성·처리량**이 중요한 워크로드에서 어느 칩이 유리한가?
**총소유비용(TCO)** 관점에서 어느 쪽이 개발·생산·유지보수까지 비용을 절감하는가?

결론적으로, **제품화·장기지원·고성능**이 핵심이면 W5500이 유리하고, **교육·레트로·브레드보드 중심**이면 ENC28J60이 실용적 대안이 됩니다.

**참고:** 본 글은 Chipmall의 “[W5500 vs ENC28J60]” 내용을 요약한 것입니다. 자세한 기술 사양, 테스트 결과, 비교 표 및 최신 업데이트는 Chipmall 원문을 확인해 주세요.
원문: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

---

## 한눈에 보는 핵심 요약

**목표**: 데이터시트 스펙이 아닌 **펌웨어 난이도·생산 비용·출시 속도** 중심 선택
**결론**: 상용/세미프로 제품 → **W5500**이 속도·코드 단순성·가격·LTS에서 우세
**예외**: 8비트 MCU·브레드보드·레트로 하드웨어 → **ENC28J60(DIP)**도 실용

---

## 왜 ‘스펙’보다 ‘현실 우선’인가

임베디드에서 체감 성능은 **프로토콜 오프로딩, 버퍼 용량, SPI 효율**에 크게 좌우됩니다. 단순 Mbps 수치보다 **응답성/CPU 점유율/디버깅 리스크**가 제품 품질과 일정에 결정적입니다.

---

## W5500 vs ENC28J60: 핵심 비교표

| Specification | **W5500** | **ENC28J60** |
| --- | --- | --- |
| Ethernet Standard | IEEE 802.3 / 10/100BASE-TX | IEEE 802.3 / 10BASE-T |
| SPI Clock Frequency | Up to 80 MHz | Up to 20 MHz |
| Internal Buffer | 32 KB (16 KB TX + 16 KB RX) | 8 KB (shared TX/RX) |
| TCP/IP Stack | Built-in (hardware) | External (e.g., lwIP) |
| Socket Support | 8 simultaneous sockets | Software-managed |
| Operating Voltage | 3.3 V | 3.1–3.6 V |
| Current Consumption | ~132 mA @ 3.3 V | ~180 mA @ 3.3 V |
| Package Options | QFN48, LQFP48 | DIP28, SSOP28, SOIC |
| PHY Layer | Integrated 10/100 PHY | Integrated 10 Mbps PHY |
| Auto-MDIX Support | Yes | No |
| MDI/MDI-X Switching | Supported | Manual |
| Wake-on-LAN (WoL) | Yes | No |
| Jumbo Frame Support | No | No |
| RoHS Compliance | Yes | Yes |

출처 : <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

> **펌웨어 영향**
>
> **W5500**: 하드와이어드 TCP/IP(ARP/TCP/UDP)로 MCU는 단순 레지스터 I/O 중심.
>
> **ENC28J60**: MAC+PHY만 제공 → lwIP 등 **스택 구현·튜닝·유지보수 부담**.
>
> 실무 예: Cortex-M3 기준 **ENC28J60+lwIP ≈ 40KB+** 플래시, **W5500 ≈ 6KB**.

![MCU-W5500 vs MCU-ENC28J60 | Chipmall.com Electronic](https://admin.chipmall.com/storage/tinymce/images/37ab60e2840b22d5c2f4d9acc8367b2d6859131560eff.webp)

이미지 출처 : <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

---

## 실제 성능: 처리량·지연·CPU 점유

**STM32F103(72 MHz) 기준 실험W5500**: 버스트 SPI에서 **~92 Mbps**에 근접, 지연 안정적, CPU 인터럽트 최소화
**ENC28J60**: 표준 SPI(20 MHz)로 **~5 Mbps** 수준, 지터↑, 패킷 지연 간헐
**의미**: OTA, 웹 대시보드, 스트리밍 등에서 **W5500이 10–20배** 체감 응답성 우위

W5500은 **내부 버퍼와 하드웨어 TCP/IP 오프로딩** 덕분에, 특히 **지속 부하(sustained load)** 상황에서 MCU 사이클 사용을 크게 줄여줍니다. 반대로 **ENC28J60은 펌웨어 의존 설계**이므로, MCU가 **모든 패킷 처리·ACK·재전송(retransmission)** 까지 직접 담당해야 해 **CPU 점유율과 지터가 증가**하고 스택 튜닝 부담이 커집니다.

![Comparison of Throughput, Average Latency, and CPU Usage on STM32F1 | Chipmall.com Electronic](https://admin.chipmall.com/storage/tinymce/images/7dc87ea729950852abbab18eff33feff685913aeb0956.webp)

이미지 출처 : <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

---

## 하드웨어 설계: 레이아웃·전력·EMI

**W5500**: QFN/LQFP로 콤팩트 설계 유리, 모듈(예: W5500-EVB 등) 활용 시 **자석소자·Auto-MDIX**로 BOM·레이아웃 단순화

**ENC28J60**: DIP-28은 브레드보드 친화적이나 **외부 자석소자·필터 필요, EMI 관리 부담전력**: W5500 ~132 mA(100 Mbps FDX) vs ENC28J60 ~180 mA(10 Mbps)

**팁**: **규격 적합성·SI·보드 공간**이 중요하면 W5500, **레거시 5V 보드 급조 시연**이면 ENC28J60(DIP)

---

## 비용(TCO): 칩 가격을 넘어

**단가(100pcs 가정)**: W5500 ≈ **$2.29**, ENC28J60 ≈ **$3.40총소유비용(TCO)**

외부 부품: W5500 **감소**(모듈/통합요소 활용) vs ENC28J60 **증가**
펌웨어: W5500 **개발·디버깅 시간 단축** vs ENC28J60 **스택 튜닝 시간 증가**
전력: W5500 **효율 우위**
유지보수: W5500 **리스크↓**

| Factor | **W5500** | **ENC28J60** |
| --- | --- | --- |
| External Components | Fewer (often integrated magnetics) | May need separate magnetics, filtering |
| Firmware Development | Faster (built-in stack) | Longer (manual TCP/IP, lwIP tuning) |
| Power Efficiency | Lower current draw | Higher overall draw |
| Debug & Maintenance Time | Minimal | Higher (stack bugs, edge cases) |

출처 : <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

---

## 용도별 추천

| Use Case | Best Choice |
| --- | --- |
| High-throughput devices (e.g., cameras, gateways) | **W5500** |
| Simple sensors or logging (low data, 8-bit MCU) | **ENC28J60** |
| Breadboarding or retro-hardware emulation | **ENC28J60 (DIP)** |
| Production product with long-term support | **W5500** |
| You hate debugging TCP/IP bugs | **Definitely W5500** |

출처 : <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

---

## 대안 살펴보기

**W6100**: W5500급 + **IPv6 지원LAN8720**: PHY 전용, **STM32 MAC(RMII)**와 페어

**DM9051**: **SPI 이더넷**(ENC28J60보다 통합도↑), 비교적 쉬운 통합

---

## 결론

**전반적 승자: W5500** — 속도, 코드 단순성, 가격, 장기지원 모두 강점.

**ENC28J60의 자리** — 교육용·8비트·취미/브레드보드에서 여전히 유효.

**추천 액션** — 요구사항이 모호하면 **두 모듈로 프로토타입** 후 측정·판단. 그게 엔지니어링입니다.

## Overview

Choosing an Ethernet controller for an embedded product isn’t a simple spec-sheet race. In practice, **firmware complexity**, **development/validation time**, **production cost**, and **long-term maintenance risk** determine success. This article compares WIZnet **W5500** and Microchip **ENC28J60** under equivalent conditions and, beyond raw numbers, examines real engineering factors such as **TCP/IP offload (hardware stack)**, **buffer architecture**, **SPI efficiency**, and **EMI/certification difficulty**.

Key questions this guide helps you answer:

Which controller best fits **our MCU and firmware resources**?

For workloads where **responsiveness and throughput** matter (OTA, web dashboards, streaming), which chip has the edge?

From a **total cost of ownership (TCO)** standpoint, which one reduces costs across development, production, and maintenance?

Bottom line: if your priorities are **productization, long-term support, and high performance**, the **W5500** is advantageous. If your focus is **education, retro projects, or breadboard convenience**, the **ENC28J60** remains a practical alternative.

**Note:** This article is a summary of Chipmall’s “W5500 vs ENC28J60” post. For full technical details, test results, comparison tables, and the latest updates, please visit the original article on Chipmall.
Source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Key Takeaways at a Glance

**Goal:** Choose based on **firmware difficulty, production cost, and time-to-market**, not just datasheet specs.

**Conclusion:** For commercial/semi-pro products, the **W5500** leads in speed, code simplicity, price, and LTS.

**Exception:** For 8-bit MCUs, breadboards, and retro hardware, **ENC28J60 (DIP)** is still practical.

## Why “Real-World First” Beats “Specs First”

Perceived performance in embedded systems depends heavily on **protocol offload**, **buffer size**, and **SPI efficiency**. More than headline Mbps, **responsiveness/CPU utilization/debug risk** drives product quality and schedule.

## W5500 vs ENC28J60: Core Comparison Table

| Specification | **W5500** | **ENC28J60** |
| --- | --- | --- |
| Ethernet Standard | IEEE 802.3 / 10/100BASE-TX | IEEE 802.3 / 10BASE-T |
| SPI Clock Frequency | Up to 80 MHz | Up to 20 MHz |
| Internal Buffer | 32 KB (16 KB TX + 16 KB RX) | 8 KB (shared TX/RX) |
| TCP/IP Stack | Built-in (hardware) | External (e.g., lwIP) |
| Socket Support | 8 simultaneous sockets | Software-managed |
| Operating Voltage | 3.3 V | 3.1–3.6 V |
| Current Consumption | ~132 mA @ 3.3 V | ~180 mA @ 3.3 V |
| Package Options | QFN48, LQFP48 | DIP28, SSOP28, SOIC |
| PHY Layer | Integrated 10/100 PHY | Integrated 10 Mbps PHY |
| Auto-MDIX Support | Yes | No |
| MDI/MDI-X Switching | Supported | Manual |
| Wake-on-LAN (WoL) | Yes | No |
| Jumbo Frame Support | No | No |
| RoHS Compliance | Yes | Yes |

Source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Firmware Impact

**W5500:** Hard-wired TCP/IP (ARP/TCP/UDP), so the MCU mainly does simple register I/O.

**ENC28J60:** Provides only MAC+PHY → **implementation, tuning, and maintenance** of a software stack (e.g., lwIP) fall on you.

**Real-world example:** On a Cortex-M3, **ENC28J60 + lwIP ≈ 40 KB+** of flash; **W5500 ≈ 6 KB**.

![MCU-W5500 vs MCU-ENC28J60 | Chipmall.com Electronic](https://admin.chipmall.com/storage/tinymce/images/37ab60e2840b22d5c2f4d9acc8367b2d6859131560eff.webp)
Image source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Real-World Performance: Throughput, Latency, and CPU Use

**Test setup: STM32F103 (72 MHz)W5500:** Near **~92 Mbps** in burst SPI, stable latency, minimal CPU interrupts

**ENC28J60:** About **~5 Mbps** with standard 20 MHz SPI, higher jitter, occasional packet delays

**Implication:** For OTA, web dashboards, and streaming, the **W5500 feels 10–20× more responsive**.

The W5500’s **internal buffer** and **hardware-managed TCP/IP offload** substantially reduce MCU cycles, especially under **sustained load**. In contrast, the **ENC28J60’s firmware-driven approach** makes the MCU handle **every packet, ACK, and retransmission**, increasing CPU utilization and jitter and adding stack-tuning overhead.

![Comparison of Throughput, Average Latency, and CPU Usage on STM32F1 | Chipmall.com Electronic](https://admin.chipmall.com/storage/tinymce/images/7dc87ea729950852abbab18eff33feff685913aeb0956.webp)
Image source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Hardware Design: Layout, Power, and EMI

**W5500:** QFN/LQFP favor compact layouts; using modules (e.g., W5500-EVB) with integrated magnetics and Auto-MDIX simplifies BOM and layout.

**ENC28J60:** DIP-28 is breadboard-friendly but needs external magnetics/filters, raising EMI management effort.

**Power:** W5500 ~132 mA (100 Mbps FDX) vs. ENC28J60 ~180 mA (10 Mbps).

**Tip:** If you care about **compliance, SI, and board space**, pick **W5500**. For quick demos on **legacy 5 V boards**, **ENC28J60 (DIP)** has its charm.

## Cost (TCO): Beyond the Chip Price

**Indicative unit price (100 pcs):** W5500 ≈ **$2.29**, ENC28J60 ≈ **$3.40Total Cost of Ownership (TCO):**

External components: **Lower** with W5500 (often integrated magnetics) vs **Higher** with ENC28J60

Firmware: **Faster** on W5500 (built-in stack) vs **Longer** on ENC28J60 (manual TCP/IP, lwIP tuning)

Power: **More efficient** with W5500

Maintenance: **Lower risk** with W5500

| Factor | **W5500** | **ENC28J60** |
| --- | --- | --- |
| External Components | Fewer (often integrated magnetics) | May need separate magnetics, filtering |
| Firmware Development | Faster (built-in stack) | Longer (manual TCP/IP, lwIP tuning) |
| Power Efficiency | Lower current draw | Higher overall draw |
| Debug & Maintenance Time | Minimal | Higher (stack bugs, edge cases) |

Source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Recommendations by Use Case

| Use Case | Best Choice |
| --- | --- |
| High-throughput devices (e.g., cameras, gateways) | **W5500** |
| Simple sensors or logging (low data, 8-bit MCU) | **ENC28J60** |
| Breadboarding or retro-hardware emulation | **ENC28J60 (DIP)** |
| Production product with long-term support | **W5500** |
| You hate debugging TCP/IP bugs | **Definitely W5500** |

Source: <https://www.chipmall.com/blogs/w5500-vs-enc28j60_122>

## Alternatives to Consider

**W6100:** Similar to W5500, plus **IPv6 supportLAN8720:** PHY-only; pairs with **STM32 MAC (RMII)DM9051:SPI Ethernet** with higher integration than ENC28J60; relatively easy to integrate

## Conclusion

**Overall winner: W5500** — strong in speed, code simplicity, price, and long-term support.

**Where ENC28J60 fits** — still relevant for education, 8-bit MCUs, and hobby/breadboard builds.

**Recommended action** — if requirements are unclear, prototype with **both modules**, measure, and decide. That’s engineering.

---

Source: https://maker.wiznet.io/mason/projects/w5500-vs-enc28j60-which-spi-ethernet-controller-wins/