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Holtek Semiconductor

BC66F3663 - Sub-1GHz OOK/GFSK Transceiver Flash MCU | Holtek

Артикул: BC66F3663 ✗ Снят с производства
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46-pin QFN-A Package
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Цена обновлена: 2026-10-11
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BC66F3663 Обзор

The Holtek Semiconductor BC66F3663 is a Sub-1GHz OOK/GFSK transceiver Flash MCU, integrating an RF transceiver and a Flash-based microcontroller in a single 46-pin QFN-A package. The device targets short-range and medium-range wireless links in the Sub-1GHz ISM bands with both OOK and GFSK modulation support.

A Sub-1GHz transceiver SoC (System-on-Chip) is a class of wireless IC that combines a low-power radio transceiver with a microcontroller and memory on one die. In the power-management and connectivity hierarchy, it sits above discrete RF transceiver ICs (which require an external MCU) and below complete certified RF modules, offering designers an intermediate level of integration for proprietary wireless protocols.

Key characteristics of the BC66F3663 include single-chip integration of the RF transceiver and Flash MCU, dual modulation support (OOK for maximum range and simplicity, GFSK for higher noise immunity and data rates), and operation across Sub-1GHz frequency bands. Holtek states that the BC66F3653 and BC66F3663 provide enhanced anti-interference ability and improved transmission range compared with earlier family members.

The device family includes the BC66V3663, which is the OCDS (On-Chip Debug System) EV chip of the BC66F3663 and provides dedicated OCDSDA and OCDSCK pins for development and emulation. Pin-shared functions on the QFN-A package are determined by corresponding software control bits, allowing flexible peripheral mapping per the manufacturer datasheet.

Typical applications include wireless remote controls, smart-home sensor nodes, security and alarm systems, and industrial telemetry links operating in Sub-1GHz license-free bands, where long range and low power favor Sub-1GHz over 2.4GHz solutions.

An important design consideration: this device has been formally End-Of-Life'd. Holtek's EOL notification gives a latest purchase date of October 25, 2025, so new designs should evaluate the recommended replacement device from the EOL cross-reference schedule before committing.

This page synthesizes the EOL notification, datasheet package information, drop-in alternative analysis, and sourcing guidance not consolidated in the manufacturer datasheet.

Аналоги без доработки для BC66F3663 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с BC66F3663 (тот же форм-фактор и посадочное место) — отличается по Package, Product Type.

Quectel
Package: LCC, SMT
Product Type: LTE Cat NB2 (NB-IoT) module
Сравнить с BC66F3663 →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

BC66V3663

✅ Прямая замена
📦 46-pin QFN-A
same die family; adds dedicated OCDSDA/OCDSCK OCDS debug pins; intended as EV/development chip rather than production part

📋 Справочный аналог (нет в каталоге)

BC66F3653

✅ Прямая замена
📦 46-pin QFN-A
same Sub-1GHz OOK/GFSK transceiver Flash MCU family with enhanced anti-interference and improved transmission range; exact memory/RF deltas must be verified against its datasheet

📋 Справочный аналог (нет в каталоге)

BC66F3663 Максимальные параметры и электрические характеристики

Product Type Sub-1GHz OOK/GFSK Transceiver Flash MCU
Корпус 46-pin QFN-A
Modulation OOK, GFSK
Debug Interface OCDS (via BC66V3663 EV chip, OCDSDA/OCDSCK pins)
Datasheet Revision V1.00 (November 01, 2023)
Статус жизненного цикла EOL - last purchase date October 25, 2025

Руководство по цоколевке BC66F3663 в корпусе 46-pin qfn-a

Цоколевка для BC66F3663 (корпус 46-pin qfn-a). Эта цифровая ИС включает выводы GPIO, интерфейсы связи (UART, SPI, I2C) и выводы питания. Обратитесь к техническому описанию производителя для альтернативных функций выводов и вариантов конфигурации. Необходимо для проектирования встраиваемых систем и трассировки печатных плат.

Схема цоколевки корпуса 46-pin qfn-a для BC66F3663

Нет подробных данных о распиновке для BC66F3663.

Обратитесь к даташиту для полной конфигурации выводов.

Типичное применение

BC66F3663 подходит для 6 применениеs: Wireless Remote Controls, Smart Home Sensor Nodes, Security and Alarm Systems, Industrial Telemetry and Metering, RF Module and Dongle Design, Active RFID and Asset Tracking.

🔧

Wireless Remote Controls

Sub-1GHz OOK transmission is the dominant technology for gate, garage-door, and industrial remote controls because it combines long range with very low power draw. The BC66F3663 fits this application by integrating the RF transceiver and Flash MCU in one 46-pin QFN-A package, eliminating the external MCU-to-RF wiring of two-chip designs and reducing BOM count. In use, the MCU formats the rolling or fixed code frame and the transceiver emits it via OOK for maximum range and receiver simplicity. Because OOK transmitters can power down between keypresses, battery life in a key-fob can reach several years; the trade-off is lower data throughput than GFSK, which is irrelevant for short control frames. Note the EOL status: existing remote-control lines should plan migration to Holtek's recommended replacement device from the EOL cross-reference table.

🧩

Smart Home Sensor Nodes

Smart-home sensors such as door/window contacts, PIR motion detectors, and smoke alarms benefit from Sub-1GHz propagation, which penetrates walls better than 2.4GHz and enables multi-year coin-cell operation. The BC66F3663 integrates the GFSK/OOK radio and the Flash MCU, so sensor sampling, protocol handling, and RF transmission all execute on one die, minimizing sleep-mode leakage paths. In a typical node, the MCU sleeps between events, wakes on sensor interrupt, and bursts a short GFSK frame to a hub; GFSK modulation supplies the noise immunity needed in crowded 433/868/915MHz home environments. Holtek states the BC66F3663 family provides enhanced anti-interference ability, directly improving coexistence with Wi-Fi and other ISM traffic. Designers of new nodes should account for the October 25, 2025 last purchase date when selecting this MPN.

🎥

Security and Alarm Systems

Wireless alarm peripherals require reliable, low-latency, low-power links between detectors, keypads, and the alarm panel. The BC66F3663 addresses this with its integrated Sub-1GHz transceiver supporting OOK for maximum-range simple devices and GFSK for higher-integrity two-way signaling, all managed by the on-chip Flash MCU with software-configurable pin-shared peripherals for LEDs, tamper switches, and siren drivers. In deployment, the MCU implements the alarm protocol's acknowledgments and supervisory heartbeats while the radio handles the air interface; the family's stated enhanced anti-interference ability reduces false-alarm risk from ISM-band congestion. Range headroom matters in metal-rich building environments, and Sub-1GHz typically outperforms 2.4GHz here. Since the device is EOL with a last purchase date of October 25, 2025, alarm vendors should qualify the EOL replacement device for continued production.

🏭

Industrial Telemetry and Metering

Utility meters, tank-level monitors, and industrial telemetry units frequently use Sub-1GHz proprietary links for kilometer-scale point-to-multipoint coverage without cellular subscription costs. The BC66F3663 consolidates the RF transceiver, Flash MCU, and configurable I/O into one 46-pin QFN-A package, letting the meter's MCU offload the entire radio stack; the software-defined pin-shared functions adapt the same silicon to pulse counting, UART metering buses, or status outputs per the datasheet. In operation, the node wakes periodically, measures, and transmits a compact GFSK frame with the family's enhanced anti-interference performance protecting payload integrity in electrically noisy plants. The engineering trade-off is that proprietary Sub-1GHz links avoid network fees but demand in-house protocol maintenance. Given EOL status, new metering platforms must adopt Holtek's recommended replacement from the EOL notification.

🌐

RF Module and Dongle Design

OEMs building their own Sub-1GHz RF modules or USB dongles can use the BC66F3663 as the core SoC, reselling the integration advantage to downstream customers. A module built on this device places the transceiver, Flash MCU, crystal, and antenna-matching network on a small PCB, exposing only power, UART/SPI, and antenna - the 46-pin QFN-A keeps the module compact. During module development, the BC66V3663 EV chip with its dedicated OCDSDA/OCDSCK OCDS pins enables full in-circuit debugging of the embedded stack before the design is frozen on the BC66F3663. OOK mode supports ultra-low-cost receive-only endpoints, while GFSK covers bidirectional module SKUs from one hardware platform. Module makers must note the EOL last purchase date of October 25, 2025 and transition the module BOM to Holtek's recommended successor.

📡

Active RFID and Asset Tracking

Active RFID tags and asset-tracking beacons transmit short identifiers periodically and must survive years on a small battery, which is precisely the operating profile of an integrated Sub-1GHz transceiver Flash MCU like the BC66F3663. The single-die design minimizes sleep-state quiescent paths because the MCU and radio share one power domain, and OOK mode provides the simplest, most power-efficient beacon emission for tag readers with basic receivers. For higher-value assets, GFSK two-way exchanges enable location confirmation and sensor telemetry (temperature, shock) handled by the on-chip Flash MCU. Holtek's stated improved transmission range extends reader spacing in warehouses, lowering infrastructure count. Tags have long field lifetimes, so component continuity matters: with the BC66F3663 under EOL (last purchase October 25, 2025), tag producers should map designs to the EOL replacement device now.

Сводка рекомендуемых товаров

BC66F3653 Same-family sibling transceiver Flash MCU Используется в: Wireless Remote Controls, Smart Home Sensor Nodes, Security and Alarm Systems, Industrial Telemetry and Metering, RF Module and Dongle Design, Active RFID and Asset Tracking BC66V3663 OCDS EV chip for firmware development Используется в: Wireless Remote Controls, Smart Home Sensor Nodes, Security and Alarm Systems, Industrial Telemetry and Metering, RF Module and Dongle Design, Active RFID and Asset Tracking
What is the Holtek BC66F3663?
The BC66F3663 is a Sub-1GHz OOK/GFSK transceiver Flash MCU manufactured by Holtek Semiconductor, integrating the radio transceiver and a Flash-based microcontroller in a single 46-pin QFN-A package. According to the Holtek datasheet (V1.00, November 01, 2023), pin-shared functions are software-configurable, and the BC66V3663 serves as its OCDS EV chip for on-chip debugging. It is designed for proprietary wireless links in Sub-1GHz license-free bands.
Is BC66F3663 discontinued?
Yes. According to Holtek's official EOL notification, the BC66F3663 will be phased out of production with a latest purchase date of October 25, 2025. The notification also includes a phase-out schedule and a cross-reference table between the phased-out device and its recommended replacement device. Engineers designing new products should consult that EOL document and evaluate the replacement rather than starting new designs with this MPN.
What is the best drop-in replacement for BC66F3663?
Holtek's EOL notification names a recommended replacement device, but the replacement MPN should be confirmed directly in the official EOL PDF at holtek.com, which contains the full phase-out schedule and cross-reference table. Within the same family, the BC66F3653 is the closely related sibling device with enhanced anti-interference ability and improved transmission range. Any replacement must be verified against the 46-pin QFN-A footprint and RF register map before board release.
What is the difference between BC66F3663 and BC66F3653?
The BC66F3653 and BC66F3663 are sibling Sub-1GHz OOK/GFSK transceiver Flash MCUs announced together by Holtek. According to Holtek's product announcement, both provide enhanced anti-interference ability and improved transmission range. They differ primarily in memory configuration and RF capability details; the exact parameter differences should be verified in each device's datasheet. Both target the same application space: proprietary Sub-1GHz wireless links such as remote controls and sensor nodes.
What is the difference between BC66F3663 and BC66V3663?
The BC66V3663 is the OCDS EV (evaluation) chip of the BC66F3663. According to the Holtek datasheet, the OCDSDA and OCDSCK pins are used as OCDS dedicated pins and are only available on the BC66V3663 device, enabling on-chip debugging during development. For production, the BC66F3663 (Flash version) is the shipping device; the BC66V3663 is intended for the development toolchain. Both share the same 46-pin QFN-A package.
Where can I download the BC66F3663 datasheet PDF?
The BC66F3663 datasheet (revision V1.00, dated November 01, 2023) is available from multiple verified mirrors, including the Holtek official site and distributor mirrors such as anatronic.com and alcom.nl/alcom.be, which host the file Holtek-BC66F3663v100-Datasheet.pdf. Holtek also publishes the separate EOL notification PDF on its website. Always download from the manufacturer or an authorized distributor mirror to ensure you receive the latest revision and EOL addenda.
How much does BC66F3663 cost?
Pricing for the BC66F3663 is not published in the verified data available as of 2026-10-11. Because the part is under End-Of-Life status with a last purchase date of October 25, 2025, standard distributor price breaks are largely exhausted and remaining stock is typically sold via quote or broker channels at volatile prices. Contact Holtek or its authorized distribution network for a formal quotation, or evaluate the recommended EOL replacement device for stable pricing.
Where to buy BC66F3663 online?
Since the BC66F3663 has passed its last purchase date of October 25, 2025 per Holtek's EOL notification, authorized distribution stock is limited. Options include checking remaining authorized distributor inventory, Holtek's official sales channels, and vetted independent brokers for last-time-buy residual stock. For new designs, Holtek's EOL document recommends a replacement device, which will have normal production and distribution availability. Always confirm date codes and authenticity when sourcing EOL parts from brokers.
What are the key specifications of BC66F3663 that engineers should know?
The BC66F3663 is a Sub-1GHz OOK/GFSK transceiver Flash MCU in a 46-pin QFN-A package with software-configurable pin-shared functions. It supports both OOK and GFSK modulation, and Holtek states the family delivers enhanced anti-interference ability and improved transmission range. The BC66V3663 variant provides OCDS debug support via dedicated OCDSDA/OCDSCK pins. The device is EOL with a last purchase date of October 25, 2025. Exact RF and memory parameters should be taken from the V1.00 datasheet.
Is BC66F3663 suitable for smart home sensor applications?
Yes. The BC66F3663's integrated Sub-1GHz OOK/GFSK transceiver plus Flash MCU makes it well suited to smart-home sensor nodes, remote controls, and alarm systems. Sub-1GHz operation offers better wall penetration and longer range than 2.4GHz radios, and GFSK modulation provides the noise immunity needed in congested home RF environments. However, because the device is EOL (last purchase October 25, 2025), new smart-home designs should start with Holtek's recommended replacement device from the EOL cross-reference table.
When should I choose BC66F3663 over BC66F3653?
Choose the BC66F3663 only when maintaining an existing design whose firmware and register configuration were qualified on this exact MPN, or when consolidating last-time-buy stock. For new designs, neither device is ideal since the BC66F3663 is EOL; between the two, the BC66F3653 remains the closer family sibling, but the EOL notification's recommended replacement should take priority. Verify memory sizing and RF parameters against your link budget before finalizing the selection.
What is the best cross-brand equivalent for the BC66F3663?
No cross-brand pin-compatible equivalent for the BC66F3663 was identified in the verified cross-reference data as of 2026-10-11. Holtek's own EOL document recommends a replacement device, which should be the first choice. Generic cross-brand Sub-1GHz transceiver SoCs from other vendors exist in the market, but they do not share the 46-pin QFN-A footprint or the Holtek register/firmware ecosystem, so they constitute redesign-level alternatives rather than drop-in replacements. Confirm any candidate against the official EOL cross-reference first.
How does OCDS debugging work on the BC66F3663?
On-chip debugging is performed using the BC66V3663, which is the OCDS EV chip of the BC66F3663. According to the Holtek datasheet, the OCDSDA and OCDSCK pins function as dedicated OCDS pins and are available only on the BC66V3663 device; the production BC66F3663 does not expose them this way. The development flow uses the EV chip in the Holtek IDE/emulator environment, and the qualified firmware is then programmed into the Flash-based BC66F3663 for production.
What is the lead time for BC66F3663 orders?
Standard lead-time terms no longer apply because the BC66F3663 is past its EOL last purchase date of October 25, 2025, per Holtek's official EOL notification. Any remaining supply comes from last-time-buy inventory at distributors or independent brokers, so availability is spot-market driven and can range from in-stock shipment to unobtainable. For volume requirements, request confirmation of quantity and date codes in writing, or transition to the replacement device recommended in the EOL cross-reference table.

Справочные инженерные данные для BC66F3663 — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the BC66F3663 only for maintaining existing products already qualified on this MPN, and only with confirmed last-time-buy stock, since Holtek's EOL notification sets the last purchase date at October 25, 2025. Use the BC66V3663 exclusively in the development lab - it is the OCDS EV chip with dedicated OCDSDA/OCDSCK debug pins, not a production part. For new Sub-1GHz OOK/GFSK designs, first consult the replacement device named in Holtek's EOL cross-reference table, then evaluate the sibling BC66F3653 if its memory and RF parameters match the link budget. Cross-brand Sub-1GHz transceiver SoCs are not pin-compatible with the 46-pin QFN-A and require PCB and firmware redesign, so they are redesign-level options rather than drop-ins. In short: existing design = BC66F3663 with stock guarantees; new design = EOL replacement or BC66F3653.

Сравнение с аналогами

Параметр Этот товар BC66V3663 BC66F3653
Package 46-pin QFN-A 46-pin QFN-A - same 46-pin QFN-A - same
Brand Holtek Semiconductor Holtek Semiconductor Holtek Semiconductor
Product Type Sub-1GHz OOK/GFSK Transceiver Flash MCU OCDS EV chip of BC66F3663 Sub-1GHz OOK/GFSK Transceiver Flash MCU
Modulation OOK, GFSK OOK, GFSK OOK, GFSK
Primary Role Production Flash device Development/emulation (OCDS EV) chip Production Flash device

Ключевые отличия

  • Production-grade Flash integration (против BC66V3663)
  • Enhanced anti-interference and range (против Earlier BC66F family members)
  • Lifecycle risk vs BC66F3653 (против BC66F3653)

Заметки по проектированию

The most critical issue with the BC66F3663 today is lifecycle, not electrical design. Holtek's official EOL notification sets a last purchase date of October 25, 2025, so any new PCB release using this MPN risks unbuildable production within months. Download the EOL PDF from holtek.com, identify the recommended replacement device in the cross-reference table, and qualify it before committing layouts. Keep last-time-buy stock with written date-code guarantees if the existing design must be maintained.

As with any Sub-1GHz transceiver SoC, RF performance depends heavily on layout: keep the crystal and antenna matching network close to the QFN-A package, use a continuous ground plane under the RF section, and follow the reference layout in the Holtek datasheet. Pin-shared functions are selected by software control bits per the datasheet - verify the desired pin function mapping in firmware before routing, since a wrong configuration can conflict with the RF-related pins on the 46-pin QFN-A footprint.

For development and production programming, remember the division of labor defined in the datasheet: the BC66V3663 is the OCDS EV chip with dedicated OCDSDA/OCDSCK debug pins, available only on that device. Design your programming/test fixture so that BC66F3663 production units are flashed via the standard Holtek writer interface, while OCDS-based emulation runs on BC66V3663 sample boards. Do not route traces assuming debug-pin availability on the production Flash device.

Информация о соответствии

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Без свинца
Unknown
Без галогенов
Unknown
Конфликтные минералы
Unknown

Compliance status not stated in the verified web data. Consult the official Holtek datasheet V1.00 and product page for RoHS/REACH declarations.

Данные проверены: 2026-10-11 — данные проверены и курируются командой компонентной инженерии XAIPART

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BC66F3663 datasheet Holtek BC66F3663 BC66F3663 EOL last purchase date BC66F3663 replacement cross reference BC66F3663 vs BC66F3653 BC66F3663 drop-in replacement Sub-1GHz OOK GFSK transceiver Flash MCU BC66F3663 QFN-A 46 pin pinout buy BC66F3663 stock price BC66V3663 OCDS EV chip BC66F3663 smart home sensor application Holtek Sub-1GHz transceiver MCU alternative

Связанные компоненты & термины

Holtek Semiconductor BC66F3663 BC66V3663 BC66F3653 Sub-1GHz transceiver OOK modulation GFSK modulation Flash MCU QFN-A 46-pin package OCDS (On-Chip Debug System) OCDSDA OCDSCK EOL notification RoHS Sub-1GHz ISM band wireless remote control smart home sensor node security alarm system active RFID System-on-Chip (SoC)
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