CP2103-GMR USB 2.0 to UART Bridge | Silicon Labs
料号： CP2103-GMR ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
CP2103-GMR 概述
A USB-to-UART bridge is an interface IC that integrates USB device control, USB transceiver functions, and an asynchronous UART interface into one component. The USB side connects the equipment to a computer or other USB host, while the UART side provides a conventional serial channel for embedded firmware, bootloaders, configuration tools, and diagnostic interfaces. This places the CP2103-GMR within the broader USB interface controller and semiconductor hierarchy.
The verified manufacturer information identifies USB 2.0 compliance, four digital I/O pins, an integrated 1024-byte EEPROM, royalty-free drivers, and no external crystal requirement. The EEPROM can store device-related configuration such as vendor ID, product ID, serial number, power descriptor, release number, and product description. The UART interface supports asynchronous serial data communication, while the internal clock removes the need for an external crystal in the target design.
The 5 x 5 mm QFN28 exposed-pad package is intended for surface-mount PCB designs and helps reduce board area compared with a discrete USB-to-serial implementation. The exposed pad provides the package thermal connection, but exact thermal resistance and recommended land-pattern dimensions are not included in the supplied verified data and must be taken from the manufacturer datasheet before layout release.
Typical CP2103-GMR applications include USB-to-UART debug adapters, industrial serial gateways, USB-connected embedded controllers, configuration and programming interfaces, instrument control links, and compact USB-to-RS-232 bridges when the external line-driver circuitry is appropriate. The part is especially useful where a direct UART signal is preferred over a complex USB peripheral implementation.
Designers should confirm the exact UART voltage levels, USB data-routing requirements, exposed-pad layout, driver installation model, and production programming requirements against the manufacturer datasheet. USB differential routing, ESD protection, ground continuity, decoupling, and exposed-pad thermal via placement remain critical to reliable field operation.
This page consolidates the verified manufacturer and distributor information for CP2103-GMR, including interface features, package details, design considerations, application guidance, and cross-reference findings. It also separates confirmed facts from parameters that require direct manufacturer documentation before schematic or PCB sign-off.
直接替换替代料： CP2103-GMR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： CP2103-GMR （相同外形与封装尺寸） ——差异在于 Package, UART Interface, Integrated Clock, Integrated USB Transceiver, Product Type.
快速对比工具——选择替代料号进行并排对比：
CP2103-GMR 规格参数
| Product Type | USB 2.0 to UART bridge controller |
| USB Interface | USB 2.0 |
| 电源电压 | 3 V to 3.6 V |
| UART Interface | Asynchronous serial data bus |
| Digital I/O Pins | 4 |
| Internal EEPROM | 1024 bytes |
| External Crystal Requirement | No external crystal required |
| 封装 | 28-pin QFN (5 x 5 mm) exposed-pad package |
| 安装类型 | Surface mount |
| Lead-Free Status | Lead free |
| RoHS 状态 | Compliant |
| Driver Support | Royalty-free device drivers |
| EEPROM Configuration Fields | Vendor ID, product ID, serial number, power descriptor, release number, and product description |
| Evaluation Kit | CP2103EK |
| Lifecycle Recommendation | Not Recommended for New Designs |
CP2103-GMR 28-pin qfn (5 x 5 mm) exposed-pad package 引脚配置指南
CP2103-GMR（28-pin qfn (5 x 5 mm) exposed-pad package 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： CP2103-GMR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CP2103-GMR 适用于 6 应用s: USB-to-UART Debug Adapter, Industrial Serial Gateway, Embedded Configuration Interface, USB-to-RS-232 Bridge, Programmer and Manufacturing Tool, Instrument Control and Diagnostics.
USB-to-UART Debug Adapter
The CP2103-GMR is a strong fit for compact debug adapters because it bridges USB 2.0 to an asynchronous UART interface and provides four digital I/O pins for target reset, boot mode, presence, or status control. Its 5 x 5 mm QFN28 footprint preserves board area, while the integrated clock and 1024-byte EEPROM reduce external component count and support device identification. In a debug design, the UART side can expose boot logs and firmware consoles, while the host side uses the approved virtual COM-port or USBXpress driver. Confirm UART voltage levels, baud-rate limits, exposed-pad layout, and driver support in the manufacturer datasheet before production.
推荐
Industrial Serial Gateway
The CP2103-GMR can provide the host-facing USB connection in an industrial serial gateway while the UART side communicates with a local controller. Its 3 V to 3.6 V supply range and integrated 1024-byte EEPROM make it useful for compact embedded data acquisition or equipment-control products. The EEPROM can store vendor ID, product ID, serial number, power descriptor, release number, and product description, helping support production identification. For industrial deployment, validate operating temperature, isolation, surge protection, ESD design, driver lifecycle, and regulatory requirements; those details are not fully provided in the verified web data.
推荐
Embedded Configuration Interface
The CP2103-GMR is useful in products that need a configuration port without exposing a high-speed USB peripheral interface to the application processor. A host can use the UART bridge for firmware updates, calibration data, serial commands, and production test instructions, while four digital I/O lines can carry auxiliary control signals. The integrated clock eliminates an external crystal requirement, and the compact QFN package helps preserve routing area on a crowded embedded board. Verify the CP2103 driver model, EEPROM programming process, UART electrical levels, and USB connector requirements during design validation.
推荐
USB-to-RS-232 Bridge
The CP2103-GMR can sit on the USB side of a USB-to-RS-232 product because it converts USB to an asynchronous serial signal, while an external transceiver provides the RS-232 voltage levels and line-driver behavior. This arrangement avoids placing a full USB protocol stack in the embedded controller and keeps the host interface recognizable as a serial device. The CP2103-GMR supply range and exposed-pad QFN package support compact designs. The external RS-232 level translator, protection network, baud-rate limits, and isolation requirements must be selected from verified component data rather than inferred from the CP2103-GMR listing.
推荐
Programmer and Manufacturing Tool
The CP2103-GMR is appropriate for programmer and manufacturing interfaces that need a repeatable USB-to-UART command channel. The bridge can provide the host with a virtual serial connection while the target receives firmware-loading traffic, and the four digital I/O pins can support handshake, reset, or target-presence signaling. Its internal EEPROM allows production identity and device-description data to be associated with the adapter. For manufacturing use, define the programming protocol, cable protection, USB driver provisioning, serial baud rate, ESD protection, and end-of-line test coverage before deployment.
推荐
Instrument Control and Diagnostics
The CP2103-GMR can provide a simple service interface for laboratory, test, or diagnostic equipment that already uses UART commands. The USB host can exchange configuration data and status logs without requiring a custom USB peripheral stack, and the exposed-pad QFN package fits compact controller boards. The integrated clock and EEPROM help reduce the component count while supporting device identification. Engineers should verify signal levels, serial timing, driver installation behavior, isolation, grounding, and cable protection; the supplied data does not provide a complete operating-temperature or transceiver specification.
推荐
推荐产品汇总
工程参考数据： CP2103-GMR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CP2103-GM |
|---|---|---|
| Product Type | USB 2.0 to UART bridge | CP2103 USB-to-UART bridge variant |
| Brand | Silicon Labs | Silicon Labs |
| Package | 28-QFN (5x5) | 28-QFN (5x5) |
关键差异点
- Integrated USB-to-UART bridge with four digital I/O pins （对比 CP2103-GM)
- Integrated clock reduces external clock-component count （对比 CP2103-GM)
- Compact 5 x 5 mm QFN28 exposed-pad package （对比 CP2103-GM)
设计说明
Route the USB differential pair as a short, continuous impedance-controlled pair with a solid reference plane and minimal stubs. Keep the USB connector, ESD device, and bridge positioned so the high-speed path is not forced around switching circuitry or long ground splits. Confirm the connector footprint, differential impedance target, trace spacing, and return-path continuity using the CP2103-GMR datasheet and the USB implementation guidelines applicable to the finished product.
Place input and output decoupling capacitors close to the corresponding power and ground pins, using the capacitor values and ESR requirements specified by the manufacturer. Connect the QFN exposed pad to the recommended thermal copper area and via pattern rather than leaving it mechanically or electrically unconnected. Validate assembly tolerances and soldering profiles for the 5 x 5 mm QFN28 package because exposed-pad voiding and pad fill can affect both reliability and heat transfer.
Do not treat a related CP2103 or CP210x part as a drop-in replacement without comparing the exact pin table, package drawing, voltage levels, clock requirements, EEPROM behavior, and driver model. The supplied search results identify CP2103-GM as a related variant but do not fully document interchangeability. For a production substitution, obtain manufacturer confirmation and run USB enumeration, UART throughput, power-consumption, thermal, ESD, and cable-compatibility tests.
Budget the 3 V to 3.6 V supply rail for the CP2103-GMR and all board-level USB, UART, pull-up, and protection circuitry. The supplied data does not include operating-current or suspend-current limits, so measure the actual production configuration or obtain the missing electrical values from the datasheet. Keep regulator output impedance low and place local bulk capacitance near the bridge to reduce startup and USB-bus transients.
合规信息
The verified CP2103-GMR material identifies the part as lead free and RoHS compliant. REACH, AEC-Q100, halogen-free, and conflict-minerals status were not fully established in the supplied data. The CP2103-GMR is reported as Not Recommended for New Designs by the supplied cross-reference result.
