CP2101R - USB 2.0 to UART Bridge, 28-VFQFN | Silicon Labs
部品番号: CP2101R ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
CP2101R 概要
A USB-to-UART bridge is an interface IC that translates USB transactions into a serial data stream and converts the host connection into UART-compatible signaling. In the system hierarchy, the CP2101R belongs to interface ICs and bridge controllers within the broader semiconductor category. It is useful when an embedded product, test fixture, instrument, or accessory must use a USB connector while presenting a serial interface to downstream circuitry.
The verified product information identifies USB 2.0 operation, a 3 V to 3.6 V supply range, UART interfacing, and a 28-MLP or 28-VFQFN exposed-pad package. The exposed-pad construction supports heat spreading where internal dissipation or nearby power circuitry requires it, although the supplied data does not provide a thermal resistance value. CP2101-family documentation also describes full-speed USB operation, an integrated USB transceiver, oscillator, EEPROM, and UART functionality; device-specific limits and pin details should therefore be checked against the manufacturer datasheet before layout release.
Typical uses include programming and service interfaces for embedded systems, USB-connected control equipment, legacy serial adapters, industrial test fixtures, and developer boards. The UART bridge allows a USB host to communicate with a downstream controller without exposing the legacy serial connector externally. Firmware and driver support must be confirmed for the target operating system, and USB descriptor configuration should be reviewed if the design changes the default device identity.
A key design consideration is the exposed-pad footprint. The PCB should follow the manufacturer’s land pattern, preserve solderability during reflow, and provide adequate thermal and signal-return copper. Do not assume that every similarly named CP2101 orderable part is pin-compatible; the package suffix, exposed pad, electrical limits, and USB/UART behavior must be compared explicitly.
This page combines the verified CP2101R supply, interface, package, and sourcing references with engineering guidance for USB-to-UART integration. It also records the evidence boundary: detailed electrical limits, pricing tiers, pin names, and lifecycle status were not supplied in the retrieved data and are not guessed here.
ドロップイン代替品: CP2101R — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: CP2101R （同一形状・フットプリント） — 相違点: Package, RoHS Status, Product Type, Supply Voltage, USB Interface.
クイック比較ツール — 並列比較する代替部品を選択:
CP2102N-A01-GQFN28R
✅ ドロップイン✓ 在庫あり
$2.31 / 個
データシートを見る →CP2101-GM
✅ ドロップイン✓ 在庫あり
$5.77834 / 個
データシートを見る →CP2101-GMR
✅ ドロップイン✓ 在庫あり
$2.8 / 個
データシートを見る →CP2102N-A01-GQFN28R
✅ ドロップイン✓ 在庫あり
$2.31 / 個
データシートを見る →CP2104-F03-GMR
✅ ドロップイン✓ 在庫あり
$1.06 / 個
データシートを見る →CP2101R 仕様
| Product Type | USB-to-UART bridge controller |
| USB Interface | USB 2.0 |
| 電源電圧 | 3 V to 3.6 V |
| Serial Interface | UART |
| Protocol | USB |
| パッケージ | 28-MLP (5 x 5 mm) |
| Case / Package | 28-VFQFN exposed pad |
| Packaging | Cut Tape (CT) |
| Interface Function | USB 2.0 UART interface |
| Device Category | I/O controller interface IC |
| RoHS ステータス | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
CP2101R 28-vfqfn exposed pad ピン配置ガイド
CP2101R (28-vfqfn exposed pad パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: CP2101R.
詳細は データシート をご参照ください。
主な用途
CP2101R の用途: 6 件s: Embedded Development and Programming, USB-to-Serial Equipment Adapter, Industrial Control and Service Fixture, Instrument Control and Configuration, Data Logger and Sensor Hub, Consumer Connectivity and Configuration.
Embedded Development and Programming
The CP2101R is suitable for an embedded development board that needs a compact USB connection to a downstream UART controller. Its verified USB 2.0 interface, 3 V to 3.6 V supply range, and 28-VFQNN exposed-pad package make it a focused solution for programming, console, and firmware-update paths. Place the bridge where the USB connector, protected power rails, UART traces, and exposed-pad thermal copper can be routed without compromising signal integrity. Confirm the exact oscillator, descriptor, and host-driver requirements in the manufacturer datasheet. The bridge reduces legacy serial connector count, but firmware and operating-system support remain essential for a reliable development workflow.
おすすめ
USB-to-Serial Equipment Adapter
CP2101R can form the core of a USB-to-serial adapter when the connected equipment expects compatible UART signals. The verified specification identifies USB 2.0 and UART interfaces, allowing a USB host to communicate with an embedded target without exposing the original serial connector. The design must still match logic voltage levels and connector pinout; CP2101R is not automatically a complete RS-232 level translator. Add appropriate ESD protection, power filtering, and chassis-ground handling where required. Validate enumeration, driver support, baud-rate range, and UART signaling on the finished adapter before production.
おすすめ
Industrial Control and Service Fixture
The CP2101R is appropriate for an industrial service fixture that uses a host PC to configure, monitor, or update an embedded controller through USB. Its 5 mm by 5 mm exposed-pad package helps preserve board area, while the 3 V to 3.6 V supply range can support a regulated low-voltage rail. Place the bridge near the USB connector and maintain controlled return paths for USB differential signals. Because the verified data does not specify industrial temperature ratings, isolation, ESD limits, or safety compliance, those requirements must be confirmed before using the bridge in a hazardous or high-noise installation.
おすすめ
Instrument Control and Configuration
CP2101R can provide a modern USB connection for legacy-controlled test and measurement equipment whose internal controller uses UART. The bridge consolidates USB connectivity, serial command handling, and compact PCB placement in one controller package. A USB-to-UART link also makes it easier to deploy firmware updates and configuration scripts without exposing a legacy connector on the enclosure. The designer must preserve signal integrity near USB, verify downstream voltage levels, and confirm operating-system driver availability. The retrieved source does not provide CP2101R timing or environmental ratings, so production use requires the exact manufacturer datasheet.
おすすめ
Data Logger and Sensor Hub
A data logger or sensor hub can use CP2101R when it needs to present a USB maintenance and configuration port while communicating internally over UART. The compact 28-VFQNN exposed-pad package limits board area, and the listed 3 V to 3.6 V supply range fits a regulated embedded rail. Keep the USB portion away from sensitive analog sensor paths and provide a continuous ground reference for the exposed pad. Confirm UART logic levels, baud rate, timeout behavior, and host-driver support. The bridge itself does not provide sensor conditioning, isolation, or environmental protection, so those functions remain separate design requirements.
おすすめ
Consumer Connectivity and Configuration
CP2101R is usable in a compact consumer accessory that needs a USB configuration or service port and an internal UART connection. The bridge can reduce the need for a legacy connector and keep the enclosure mechanically simple. Designers must account for ESD protection at the user-accessible USB connector, supply sequencing, driver installation, and the exposed-pad soldering process. The verified data does not establish RoHS status, halogen-free status, operating temperature, or automotive qualification, so consumer compliance and environmental requirements must be verified separately. Confirm device descriptors and host support before committing to a production accessory.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: CP2101R — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | CP2102 | CP2101-GM | CP2101-GMR | CP2102N | CP2104 |
|---|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Function | USB-to-UART bridge | USB-to-UART bridge | CP2101-family bridge | CP2101-family bridge | CP2102-family bridge | USB interface family |
| Package | 28-MLP (5 x 5 mm) / 28-VFQNN exposed pad | 28-MLP (5 x 5 mm) candidate | 28-MLP (5 x 5 mm) candidate | 28-MLP (5 x 5 mm) candidate | 28-MLP (5 x 5 mm) candidate | 28-MLP (5 x 5 mm) candidate |
| Pin-to-Pin Verification | Reference design | Reported CP2101 compatibility; exact CP2101R verification required | Family relationship; exact CP2101R verification required | Family relationship; exact CP2101R verification required | Family relationship; exact CP2101R verification required | Family relationship; exact CP2101R verification required |
主な差別化要因
- CP2101-family USB-to-UART integration （vs CP2102)
- Compact exposed-pad package （vs CP2101-GM)
- USB 2.0 and UART positioning （vs CP2104)
設計ノート
Use the exact CP2101R manufacturer land pattern for the 28-VFQNN exposed pad. Keep USB D+ and D− traces short, impedance-controlled where applicable, and routed over a continuous ground reference. Place the USB connector-side protection and filtering components close to the connector, while separating noisy switching or power-conversion nodes from the bridge. The supplied data does not provide the official pin map, so verify it before assigning nets or releasing artwork.
Plan the exposed pad as both an electrical connection and a thermal copper feature. Follow the manufacturer’s paste, stencil, solder-mask, and reflow recommendations rather than inventing a thermal pattern. Provide adequate via access if the pad requires thermal vias, and maintain a continuous return path beneath the USB interface. Check the assembled pad for voiding or insufficient solder, because an exposed-pad defect can affect both thermal performance and electrical continuity.
Do not treat CP2101R as a complete RS-232 transceiver. Its verified function is a USB-to-UART bridge, so true RS-232 voltage levels, isolation, ESD requirements, and connector pinout may need external circuitry. Likewise, do not assume a same-looking CP2101 or CP2102 orderable part is a drop-in replacement without checking the exact package suffix, exposed pad, pinout, supply limits, USB descriptors, and host-driver behavior.
The verified supply range is 3 V to 3.6 V. Confirm that the USB-side and internal logic rails meet the exact CP2101R requirements before connecting power. Place local bypass capacitors according to the manufacturer reference design, observing polarity, voltage rating, and loop length. Do not infer a regulator recommendation, capacitor value, or startup sequence from the distributor snippets; those values require the exact datasheet and application circuit.
コンプライアンス情報
The supplied distributor snippets do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. Automotive qualification is not established for this interface bridge and is therefore recorded as not_applicable rather than inferred.
