CP2102N-A01-GQFN24 USB-to-UART Bridge | Silicon Labs
料号： CP2102N-A01-GQFN24 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.8894 | $0.89 |
| 10 | $0.8894 | $8.89 |
| 100 | $0.8894 | $88.94 |
| 500 | $0.8894 | $444.70 |
| 1,000 | $0.8894 | $889.40 |
CP2102N-A01-GQFN24 概述
A USB-to-UART bridge is an interface IC that connects a USB host to a serial UART peripheral while handling USB packetization, enumeration, control transfers, and serial data transmission. This device is useful when an existing embedded design needs a compact USB-to-serial path for firmware updates, configuration, diagnostics, logging, or manufacturing test. Its position in the hierarchy is USB interface bridge, then USB-to-UART interface IC, then broader interface IC and semiconductor.
The verified ordering information identifies four GPIOs, separate VDD and VIO pins, and a -40 °C to +85 °C temperature range. The package is QFN24, and the product is specified for a 3 V to 3.6 V supply according to the available distributor and datasheet data. The separate VDD and VIO arrangement allows the USB and UART sides to use independently selected supply domains when the host circuit requires voltage-domain flexibility. The four GPIOs add simple control or status functions beyond basic UART communication.
Typical uses include industrial control equipment, USB-to-RS-232 design updates, serial adapters, embedded development boards, programmable controllers, and factory test equipment. Because the CP2102N integrates the USB function controller, transceiver, oscillator, and UART, the circuit can be designed with fewer external USB components than a discrete USB implementation. The manufacturer datasheet should be consulted for the exact pin names, exposed-pad connection, capacitor values, voltage sequencing, and USB routing requirements.
For PCB implementation, place the device close to the USB connector and maintain short, controlled-impedance USB differential traces. Decouple each applicable supply domain near its pins and follow the datasheet’s recommended footprint and exposed-pad thermal design. Confirm host-driver support, UART voltage levels, cable orientation, and regulatory requirements before releasing a production design.
This page combines the verified manufacturer and distributor data with same-package replacement research, application guidance, comparison parameters, and practical implementation notes. It does not infer undocumented specifications or treat functionally similar bridges as pin-compatible replacements.
直接替换替代料： CP2102N-A01-GQFN24 ——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： CP2102N-A01-GQFN24 （相同外形与封装尺寸） ——差异在于 Product Type, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
CP2102N-A02-GQFN24
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →CP2102N-A01-GQFN24R
✅ 直接替换📋 参考替代料（不在目录中）
CP2102N-A02-GQFN24R
✅ 直接替换📋 参考替代料（不在目录中）
CP2102N-A01-GQFN24 规格参数
| Product Type | USB 2.0 full-speed to UART interface bridge |
| Product Family | USBXpress |
| USB Standard | USB 2.0 full-speed |
| 电源电压 | 3 V to 3.6 V |
| 接口 | USB-to-UART |
| General-Purpose I/O Count | 4 GPIOs |
| Power Supply Arrangement | Separate VDD and VIO pins |
| 工作温度 | -40 °C to +85 °C |
| Package Type | QFN24 |
| Package Dimensions | 4 mm x 4 mm |
| Integrated Functions | USB function controller, USB transceiver, oscillator, and UART |
| External USB Components | No other external USB components required, according to the verified source |
| 安装类型 | Surface mount |
| RoHS 状态 | Pb-free and RoHS compliant, according to the verified ordering table |
| Lead-Free Status | Yes, according to the verified ordering table |
CP2102N-A01-GQFN24 4 mm x 4 mm 引脚配置指南
CP2102N-A01-GQFN24（4 mm x 4 mm 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： CP2102N-A01-GQFN24.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CP2102N-A01-GQFN24 适用于 6 应用s: USB-to-UART Embedded Controller, Industrial USB-to-RS-232 Upgrade, Programmable Logic and Test Equipment, USB Serial Adapter for Accessory Devices, Data Logging and Diagnostics Interface, Development Board and Prototype Interface.
USB-to-UART Embedded Controller
CP2102N-A01-GQFN24 fits embedded controllers that need a compact USB path for firmware download, configuration, diagnostics, and runtime logging. Its integrated USB 2.0 full-speed controller, transceiver, oscillator, and UART reduce the number of external USB interface components, while four GPIOs provide basic status or control functions. The 3 V to 3.6 V supply range and QFN24 4 mm by 4 mm package support dense controller layouts. Designers should match VDD and VIO to the system rails, place decoupling capacitors near the device, and route the USB differential pair away from noisy UART and switching-regulator paths.
推荐
Industrial USB-to-RS-232 Upgrade
The CP2102N-A01-GQFN24 is suitable for modernizing legacy RS-232 equipment by placing a USB interface beside an existing UART-based controller. It provides USB 2.0 full-speed connectivity and a UART interface in one compact package, helping designers retain an established serial protocol while replacing the legacy host port. The four GPIOs can support ancillary control signals where the system permits. A production design must add the appropriate RS-232 line driver or receiver, cable protection, grounding, and isolation as required by the application. The official datasheet should control USB and supply layout.
推荐
Programmable Logic and Test Equipment
CP2102N-A01-GQFN24 can provide a USB service port for programmable logic, instrumentation, and factory-test products. The host can use UART commands to configure registers, retrieve measurements, load test vectors, or collect production data without exposing a proprietary connector. The integrated USB-to-UART bridge reduces firmware complexity on the USB host side, while the four GPIOs support auxiliary handshake or status signaling. For test equipment, isolate the USB connector and UART interface from high-energy circuits, use controlled-impedance routing, and verify ground and shield behavior according to the enclosure and EMC requirements.
推荐
USB Serial Adapter for Accessory Devices
The CP2102N-A01-GQFN24 is appropriate for a compact USB serial adapter that connects an accessory or control board to a computer. Its QFN24 4 mm by 4 mm package helps reduce board area, and its separate VDD and VIO pins provide flexibility when the accessory UART operates from a different voltage domain. The design must include the USB connector, required passive components, firmware or host-driver support, and the correct UART logic-level interface. Designers should verify whether the target operating system already supports the required CP210x driver or whether a custom driver is necessary.
推荐
Data Logging and Diagnostics Interface
CP2102N-A01-GQFN24 can add a low-component-count USB diagnostics channel to equipment that records operating data or accepts service commands. A host computer can receive serial logs, request calibration values, or trigger maintenance operations through the UART link. The integrated USB function controller and transceiver avoid a separate USB controller implementation, while the four GPIOs can indicate status or assist with flow control. Place the bridge near the USB connector, keep the differential pair continuous, and isolate noisy motor, relay, or power-converter switching nodes from the communication area.
推荐
Development Board and Prototype Interface
The CP2102N-A01-GQFN24 is useful on development boards that need a compact USB console for a microcontroller or programmable device. It lets engineers program, bootload, monitor serial output, and run interactive diagnostics from a standard USB cable. The 24-QFN package is small, but its fine pitch requires careful assembly and land-pattern review. Developers should confirm the USB host driver, UART baud-rate configuration, GPIO use, and supply domains before populating the part. The verified manufacturer documentation and application notes provide the appropriate starting point for the final reference circuit.
推荐
推荐产品汇总
工程参考数据： CP2102N-A01-GQFN24 ——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 | CP2102N-A02-GQFN24 | CP2102N-A01-GQFN24R | CP2102N-A02-GQFN24R | FT232RL |
|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | FTDI |
| Package | QFN24 | QFN24 | QFN24 | QFN24 | QFN32 |
关键差异点
- Same-package revision path （对比 CP2102N-A02-GQFN24)
- Integrated USB bridge （对比 FT232RL)
- Separate VDD and VIO architecture （对比 Generic USB-UART bridge)
设计说明
Place the CP2102N-A01-GQFN24 close to the USB connector and route the USB differential pair as a short, continuous, impedance-controlled pair. Keep the pair away from switching nodes, high-current return paths, and unshielded UART edges. Use the manufacturer’s recommended footprint and verify the exposed-pad treatment in the official package drawing. The supplied data does not provide a complete reference layout, so do not release a footprint solely from the generic QFN24 name.
Decouple the VDD and VIO supply domains separately according to the manufacturer application guidance. The verified ordering information confirms separate VDD and VIO pins, but it does not provide every recommended capacitor value or rail-sequencing limit. Check the current datasheet before placing decoupling parts and before connecting an externally powered UART interface. Ensure the USB-side and UART-side voltage domains remain within their specified operating limits.
Do not assume that a functionally similar USB-UART bridge is pin-compatible. The verified cross-reference results identify CP2102N-A02-GQFN24 as the relevant successor, while FT232RL and other alternatives may use different packages or pinouts. Compare the exact pin table, exposed pad, UART voltage levels, firmware behavior, and USB power requirements before replacing the target. Also confirm that the host operating system has the required CP210x driver.
Keep the USB connector, protection network, and bridge in the same controlled USB channel region. Separate the UART traces from sensitive analog or high-speed switching paths where possible, and use a solid ground reference. If the board includes a metal enclosure or chassis, define the chassis-to-digital-ground connection according to EMC and ESD requirements. The verified data confirms an integrated USB transceiver but does not specify the final protection component selection.
合规信息
The verified ordering table identifies CP2102N-A01-GQFN24 as Pb-free and RoHS compliant. REACH, AEC-Q100, halogen-free, and conflict-minerals status were not explicitly established in the supplied data.
