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CP2102N-A02-GQFN20R

SiLCP2102N-A02-GQFN20R

Silicon Labs
USB Bridge, USB to UART USB 2.0 UART Interface 20-QFN (3x3)
Active8,831 in stock

Overview

The CP2102N-A02-GQFN20R is a high-performance USB-to-UART bridge controller from Silicon Labs designed to provide a simple solution for updating RS-232 designs to USB. It features a highly integrated design including a USB 2.0 full-speed function controller, USB transceiver, oscillator, and UART in a compact 3x3mm QFN20 package. This device requires no external crystal or firmware development, significantly reducing PCB footprint and time-to-market.

Why Choose This Part

The device eliminates the need for external components by integrating the clock and voltage regulator, drawing only 9.5mA at 115200 baud. It supports high-speed data transfer up to 3 Mbaud and includes a 960-byte programmable ROM for customizing USB descriptors. Silicon Labs provides royalty-free Virtual COM Port (VCP) drivers, ensuring broad compatibility with Windows, macOS, and Linux.

Applications

USB Dongles
Providing a bridge for legacy serial peripherals to connect to modern USB-only host systems.
Industrial Controllers
Adding a maintenance and configuration port to PLCs or industrial sensors using the built-in UART interface.
Battery Powered Devices
Utilizing USB Battery Charger Detection (BCS 1.2) to identify power source capabilities for optimized charging.
Medical Instrumentation
Implementing isolated or non-isolated data logging interfaces in portable diagnostic equipment.

Key Specifications

Function Bridge, USB to UART
Protocol USB
Interface UART
Standards USB 2.0
Package / Case 20-WFQFN Exposed Pad
Current - Supply 9.5mA
Voltage - Supply 3V ~ 3.6V
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 20-QFN (3x3)

Getting Started

Engineers can use the Simplicity Studio Xpress Configurator to customize the device's GPIOs and USB strings without writing firmware. Evaluation can be performed using the CP2102N-EK evaluation kit, which provides access to all pins and simple micro-USB connectivity. For hardware design, ensure the 20-QFN exposed pad is properly soldered to a ground plane for thermal and electrical performance.

CP2102N Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
CP2102N-A02-GQFN20R (this part) WFQFN-20 8,831
CP2102N-A02-GQFN20 WFQFN-20 29,060
CP2102N-A02-GQFN24R VFQFN-24 10,904
Also available as: CP2102N-A02-GQFN24, CP2102N-A02-GQFN28R, CP2102N-A02-GQFN28, CP2102NP1174GM, CP2102N-A01-GM

Also Consider

FT232RNL FTDI - An industry-standard alternative with very high driver reliability across all operating systems.
CH340G WCH - A widely used, low-cost USB-to-serial solution commonly found in budget prototyping boards.
MCP2221A MCHPMicrochip - Provides both UART and I2C/SMBus bridging capabilities in a single package.
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