LittelfuseがeZ80 MCUラインを終了：設計者とバイヤーが2026年12月までに行うべきこと

LittelfuseがPCN ZAC26-0074を発行し、eZ80の最終注文を2026-12-21まで受け付け、2027年まで納品を縮小しながらZ80ファミリーの章を閉じる。

公開日 更新日 4 分で読了 ✓ AI対応 共有

TL;DR — 3つの文

  • Littelfuse issued PCN ZAC26-0074 to accept final orders for the eZ80 and all other Littelfuse-owned MCU lines (S1).
  • Mouser has marked eZ80 parts as End of Life on its catalog (S1).
  • Final-order cutoff is 2026-12-21, with deliveries scheduled throughout 2027 (S1).

引用元: key_takeaways （実フィールド、最大3件）。事実と分析は別々にラベル付けされています。

LittelfuseがeZ80 MCUラインを終了：設計者とバイヤーが2026年12月までに行うべきことEditorial cover for a component sourcing brief. Chip motif; headline "LittelfuseがeZ80 MCUラインを終了：設計者とバイヤーが2026年12月までに行うべきこと". No reported key numbers on this brief, so no number strip is drawn. 1 cited source. Static cover (no animation).LittelfuseがeZ80MCUラインを終了：設計者とバイヤーが2026年12月までに行うべきことXAIPART
Cover image generated from data already shown on this page: the category motif, the headline, and reported key numbers. No decorative illustration; no third-party image.

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Reported by Hackaday on . Summarized and analyzed by XAIPART Editorial.

What happened

Littelfuse, which owns the Zilog name, has notified customers through PCN ZAC26-0074 that it is accepting final orders for the eZ80 and all other microcontroller lines it currently holds.[S1] Distributor Mouser has correspondingly marked eZ80 parts as "End of Life" on its website.[S1]

This follows the earlier discontinuation of the original Z80 and its peripherals, leaving the eZ80 as the last Z80-family device in commercial production until now.[S1] One reader commenter dates the Z80 itself as 1974–2024 and the eZ80 as 2001–2026.[S1]

Final orders for affected parts will be accepted through , with final deliveries scheduled to take place throughout 2027 as the MCU manufacturing line winds down.[S1] For commercial users still specifying the eZ80 or similar Zilog devices, this effectively ends new-silicon availability.[S1]

Key numbers
MetricReported valueSource
PCN identifierZAC26-0074[S1]
Final-order cutoff date2026-12-21[S1]
Final-delivery windowThroughout 2027[S1]
Distributor status flagEnd of Life (Mouser)[S1]
Lines coveredeZ80 and all other Littelfuse-owned MCU lines[S1]
eZ80 production span (per source comment)2001–2026[S1]
Original Z80 production span (per source comment)1974–2024[S1]

Background timeline

  1. - Original Z80 enters production (date not disclosed by the source beyond the 1974–2024 lifespan cited in comments).
  2. - eZ80 successor family launches (year cited in source comments).
  3. - Original Z80 and its peripherals discontinued (per source comment dating the Z80 to 1974–2024).
  4. - Hackaday reports PCN ZAC26-0074 announcing final orders for eZ80 and other Littelfuse-owned MCU lines.
  5. - Final-order cutoff for eZ80 and remaining Littelfuse MCU lines.
  6. 2027 - Final deliveries to commercial customers as MCU line is wound down.

XAIPART take

Technical impact

Designs still targeting Z80-family silicon must now plan around a fixed-date obsolescence path: last buy by , with deliveries spread across 2027, so any re-spin or safety stock should be sized to that window. The eZ80's role as a drop-in modernized Z80 with on-chip peripherals made it attractive for legacy industrial and embedded systems; without new silicon, maintenance teams will need to consider FPGA soft-cores (open-source Z80 implementations exist, and the source notes TinyTapeout as a fab path) or alternative 8-/16-bit MCUs such as the Renesas RL78 that readers mention as ISA-adjacent. XAIPART analysis

Market impact

The PCN closes out the last commercially supported branch of the Zilog Z80 family, so distributor inventory will tighten fast as the 2026-12-21 cutoff approaches and unit pricing on the secondary market typically rises after EOL flags such as Mouser's. Buyers with field-deployed eZ80 designs should assume that after 2027 there will be no franchised-distribution channel for new units, only brokers and salvage stock, which raises both unit cost and counterfeit risk. XAIPART analysis

Action

Procurement should immediately pull a BOM report of every eZ80 and remaining Littelfuse/Zilog MCU line, confirm whether Mouser's EOL flag covers each MPN in use, and place a last-time-buy sized for the product's expected service life plus a safety buffer before . Engineering should in parallel evaluate an FPGA migration plan using an open-source Z80 core and verify second-source options such as the RabbitCore RCM2000 mentioned in source comments for designs that cannot be re-platformed. XAIPART analysis

XAIPART Forecast

XAIPART expects that, within 9 months of the 2026-12-21 cutoff (i.e., by Q3 2027), franchised-distributor on-hand stock of eZ80 MPNs at Mouser and peer catalogs will be reported at zero SKUs or shown only as obsolete with no buy button, because Littelfuse's stated deliveries are limited to orders placed before the cutoff and are scheduled throughout 2027. This forecast is wrong if Mouser still lists any eZ80 SKU as orderable past 2027-09-30. XAIPART analysis

Facts are as reported by the cited source. The design-in, sourcing and forward-looking statements above are XAIPART's analysis, not the source's claims. Unconfirmed or single-source items: the specific MPNs and per-part pricing of eZ80 variants affected, whether Littelfuse has issued any companion PCNs beyond ZAC26-0074, and the exact 2027 delivery cadence are not disclosed.

Corrections: none at publication. This brief will be updated with a timestamp if the source corrects its report.

Dated developments, extracted from this page's timeline (curated milestones = hollow markers).
Timeline of dated developmentsDated entries: 1974-01-01 - Original Z80 enters production (…; 2001-01-01 - eZ80 successor family launches (…; 2024-01-01 - Original Z80 and its peripherals…; 2026-10-11 - Hackaday reports PCN ZAC26-0074 …; 2026-12-21 - Final-order cutoff for eZ80 and ….1974-01-01- Original Z80 enters production (…2001-01-01- eZ80 successor family launches (…2024-01-01- Original Z80 and its peripherals…2026-10-11- Hackaday reports PCN ZAC26-0074 …2026-12-21- Final-order cutoff for eZ80 and …

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部品関係ライフサイクル根拠
— 登録済みの代替品はありません データ不足 — 前身ラベルを表示するには match_type が必要です

「前身」および「代替」のラベルは、記録された一致タイプ、ライフサイクルステータス、またはソーステキストに基づく場合にのみ付与されます。一致が記録されていない場合、ラベルは表示されません。当社の掲載情報は市場の基準ではありません。

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次元別のコスト圧力

Source: FRED · Generated · reference output z and composite are algorithm outputs, not a fetch snapshot

Cost pressure by dimension — composite stateDiverging bars for three dimensions around a zero midpoint. Input Cost has no reading; Supply Demand z -1.4711, notable; Fx Energy z 0.2546, neutral. Composite index -9.1, band neutral.0Input costno readingSupply/demandz −1.4711 · notable46 dFX & energyz +0.2546 · neutral5 dcomposite −9.1 · neutral−100 · −40 · −15 · 0 · +15 · +40 · +100
Underlying values — copyable for verification.
DimensionFRED series IDUnitLagAs of
Input costPCOPPUSDM, PALUMUSDM, PNICKUSDMUSD/mt52 d
Supply/demandPCU334413334413, IPG3344Sindex(1982=100) / index(2017=100)46 d
FX & energyDEXCHUS, DCOILBRENTEU, DHHNGSPrate / USD/bbl / USD/MMBtu5 d

No free authoritative interface for: gold · silver · rare earth · polysilicon · lithium carbonate · market share — listed rather than approximated.

この記事の制作方法

プロセス証跡 — 取得、ソースの妥当性、モデル、ゲート
このブリーフの監査証跡
Source fetched Hackaday · hackaday.com · 5,994 chars
Source sanity (S1) ok — passed before any model call (no s1_ block recorded)
Model / prompt MiniMax-M3 · prompt Blog Agent - News Summary (v2.8-final) · 7,447 tokens · 27.5s · run completed
Gate verdict hold · 6/6 applicable checks passed · spec v2.9 · C10 ratio 0.012311 · C10 rounds 0
Time contract 9 <time datetime> values in this brief — 0 violations (+08:00 or date-only)

上記のすべての行はパイプラインによって生成されており、手作業で書かれたものではありません。

編集スコア

決定論的ゲートの結果 — 純粋なPHPで、判定にモデルは関与していません
ゲートスコアの内訳 6 件の該当チェックのうち、 6項目合格: 100 %. Hold items: C3(insufficient_evidence), C13 (falsifiable forecast) — sent to human review. Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.5342. 該当するチェックに合格 6 / 6 = 100% · 判定: hold Hold items: C3(insufficient_evidence), C13 (falsifiable forecast) — sent to human review Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.5342 公開の可否はゲートが決定します。独立監査スコアは助言にすぎません。

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情報源

  1. Littelfuse Announces Retirement Of The EZ80 — https://hackaday.com/2026/10/11/littelfuse-announces-retirement-of-the-ez80 · rss · 参照日

事実はS1/S2とマークされ、リンクされた出典まで追跡できます。ラベル付けされた箇所は 分析 はXAIPART独自の推論であり、報道された事実とは分けて維持されています。出典リンクは実際に参照され、次の指定は行いません: nofollow — 帰属表示は意図的なものです。