CP2101R - USB 2.0 to UART Bridge, 28-VFQFN | Silicon Labs
Référence : CP2101R ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
CP2101R Présentation
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.
Alternatives de remplacement direct pour CP2101R — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec CP2101R (même facteur de forme et même empreinte) — différant par Package, RoHS Status, Product Type, Supply Voltage, USB Interface.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
CP2102N-A01-GQFN28R
✅ Remplacement direct✓ En stock
$2.31 / unité
Voir la fiche technique →CP2101-GM
✅ Remplacement direct✓ En stock
$5.77834 / unité
Voir la fiche technique →CP2101-GMR
✅ Remplacement direct✓ En stock
$2.8 / unité
Voir la fiche technique →CP2102N-A01-GQFN28R
✅ Remplacement direct✓ En stock
$2.31 / unité
Voir la fiche technique →CP2104-F03-GMR
✅ Remplacement direct✓ En stock
$1.06 / unité
Voir la fiche technique →CP2101R Spécifications
| Product Type | USB-to-UART bridge controller |
| USB Interface | USB 2.0 |
| Tension d'alimentation | 3 V to 3.6 V |
| Serial Interface | UART |
| Protocol | USB |
| Boîtier | 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 |
| Statut RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
Guide de configuration des broches du CP2101R 28-vfqfn exposed pad
Configuration des broches du CP2101R (boîtier 28-vfqfn exposed pad). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour CP2101R.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
CP2101R convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CP2101R — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- CP2101-family USB-to-UART integration (vs CP2102)
- Compact exposed-pad package (vs CP2101-GM)
- USB 2.0 and UART positioning (vs CP2104)
Notes de conception
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.
Informations de conformité
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.
