Littelfuse Ends eZ80 MCU Line: What Designers and Buyers Should Do Before December 2026

Littelfuse issues PCN ZAC26-0074 taking final eZ80 orders through 2026-12-21, with deliveries winding down through 2027, closing the Z80 family chapter.

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TL;DR — 세 문장

  • 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).

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Littelfuse Ends eZ80 MCU Line: What Designers and Buyers Should Do Before December 2026Editorial cover for a component sourcing brief. Chip motif; headline "Littelfuse Ends eZ80 MCU Line: What Designers and Buyers Should Do Before December 2026". No reported key numbers on this brief, so no number strip is drawn. 1 cited source. Static cover (no animation).Littelfuse Ends eZ80 MCU Line: WhatDesigners and Buyers Should Do BeforeDecember 2026XAIPART
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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차원별 비용 압력

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.

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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)

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편집 점수

결정론적 게이트 결과 — 순수 PHP로 판정에 모델이 관여하지 않음
게이트 점수 분석 6 적용 가능한 검사, 6항목 통과: 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. 적용 가능한 검사 통과 6 / 6 = 100% · 판정: 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 게시 여부는 게이트가 결정합니다. 독립 감사 점수는 권고용일 뿐입니다.

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출처

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

사실은 S1/S2로 표시되며 링크된 출처로 추적됩니다. 다음 라벨이 붙은 구절은 분석 는 보도된 사실과 분리되어 유지되는 XAIPART의 자체 추론입니다. 출처 링크는 추정하지 않고 실제로 확인합니다. nofollow — 출처 표기는 의도적입니다.