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Produits (39 000+)

COP8SAC720M8X/NOPB - 8-Bit 10MHz 4KB OTP MCU | Texas Instruments
COP8SAC720M8X/NOPB

COP8SAC720M8X/NOPB - 8-Bit 10MHz 4KB OTP MCU | Texas Instruments

The Texas Instruments COP8SAC720M8X/NOPB is an 8-bit CMOS ROM-based and One-Time Programmable (OTP) microcontroller from the COP8™ 8SA family, delivering 10 MHz CPU performance with 4 KB of program memory and 128 bytes of RAM in a 20-pin SOIC package. Per the manufacturer datasheet, this device integrates power-on reset, low-EMI oscillator design, and very small packaging, making it suited for cost-sensitive embedded applications requiring reliable one-time-programmable code storage. The COP8 (Controller Oriented Processor) family is a mature 8-bit CISC architecture originated by National Semiconductor and now maintained by Texas Instruments. COP8 microcontrollers are accumulator-based Harvard-architecture devices featuring a rich instruction set, multiple addressing modes, and integrated peripherals such as timers, A/D converters, and serial interfaces. They are widely deployed in white-goods, appliance, industrial-control, and consumer-electronics applications where deterministic behavior, low EMI, and OTP-based code security are valued. The COP8SAC720M8X/NOPB is the OTP variant of the COP8SA family, intended for prototyping and low-to-medium volume production. Key features include 16 GPIO pins, an 8-bit accumulator-based CPU core, on-chip power-on reset eliminating external reset circuitry, and a wide operating voltage range of 2.7 V to 5.5 V. The 20-SOIC package measures 7.50 mm in body width, and the device operates over the industrial -40 °C to +85 °C temperature range. The integrated oscillator with low-EMI feature reduces electromagnetic emissions in noise-sensitive applications. The COP8SAC720M8X/NOPB is pin-compatible with other COP8SA family members including COP8SAB720M8 and COP8SAC744M8, enabling designers to migrate between memory sizes without PCB rework. It supports in-system programming via TI's development toolchain and is supported by the COP8-ICE emulator. According to the manufacturer datasheet, the device includes a multi-source interrupt controller, two 16-bit timers, and a UART-compatible serial port. Typical applications include appliance control boards, HVAC thermostat controllers, security alarm panels, battery charger control, and small home-automation sensor nodes. The OTP memory provides one-time programmability for low-volume or secure code storage, eliminating the need for external EEPROM in many designs. When designing with this part, ensure the OTP programming voltage and timing requirements are observed during code development. The COP8 instruction set is non-standard, so engineers must use the TI COP8 assembler and toolchain for code development.

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CP2101 - USB to UART Bridge, QFN-28, 5x5mm | Silicon Labs
CP2101

CP2101 - USB to UART Bridge, QFN-28, 5x5mm | Silicon Labs

The Silicon Labs CP2101 is a single-chip USB-to-UART bridge controller integrating a USB 2.0 full-speed function controller, USB transceiver, oscillator, EEPROM, and asynchronous serial data bus (UART) with full modem control signals in a compact 5 x 5 mm MLP/QFN-28 package. A USB to UART bridge is a type of interface controller IC that allows legacy RS-232/UART peripherals and microcontrollers to communicate with a host PC over USB by transparently translating between the USB protocol and the traditional asynchronous serial data bus format. The CP2101 sits in the broader interface IC category and eliminates the need for external USB controllers, level shifters, or crystal oscillators, drastically reducing BOM count and PCB footprint when adding USB connectivity to embedded designs. Key features include a USB 2.0 full-speed (12 Mbps) compliant transceiver, an integrated 5-to-3 V voltage regulator enabling USB bus-powered or self-powered configurations, an on-chip programmable EEPROM for vendor ID, product ID, serial number, and other descriptor customization, and full modem control signals (RTS, CTS, DTR, DSR, DCD, RI). The device uses a standard COM port driver on Windows, macOS, and Linux, eliminating custom driver development. The CP2101 is implemented in standard CMOS mixed-signal technology and supports data rates from 300 bps up to 921.6 kbps. The 5-to-3 V internal regulator provides up to 100 mA to external circuitry, simplifying bus-powered designs. An internal RC oscillator and an integrated one-time-programmable (OTP) EEPROM replace external components and reduce manufacturing costs. Typical applications include adding USB connectivity to RS-232 legacy equipment, USB-to-UART cables and dongles, microcontroller-to-USB bridges, industrial control adapters, point-of-sale terminals, and embedded development boards. The integrated regulator and EEPROM make it ideal for compact, low-power designs requiring a single BOM-friendly solution. When designing with the CP2101, engineers should follow the recommended decoupling capacitor placement on VBUS and VDD pins and ensure proper grounding of the analog and digital grounds. Note that the CP2101 is a mature product; Silicon Labs recommends CP2102N for all new designs - this is critical for long-term product lifecycle planning. This page synthesizes distributor pricing, drop-in alternatives (CP2102C-A01-GQFN28, CP2102N-A02-GQFN28), and practical design notes not found in the manufacturer datasheet alone.

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CP2101-GM USB 2.0 to UART Bridge | Silicon Labs
CP2101-GM

CP2101-GM USB 2.0 to UART Bridge | Silicon Labs

The Silicon Labs CP2101-GM is a USB-to-UART bridge controller integrating a USB 2.0 full-speed controller, USB transceiver, oscillator, EEPROM, and asynchronous serial interface in a compact 28-QFN package measuring 5 mm by 5 mm. It connects a USB host to legacy UART equipment while adding a compact USB interface and minimizing the external component count required for an RS-232-style design. A USB-to-UART bridge, also called a USB serial interface adapter, converts between USB traffic and asynchronous serial data. It belongs to the interface-controller hierarchy and provides a bridge between a host computer and embedded equipment, industrial controllers, test systems, and legacy serial peripherals. The CP2101 family also includes full modem-control signals, allowing the integrated bridge to serve as a complete USB-to-serial interface rather than only a basic data adapter. Verified distributor information identifies the CP2101-GM as a Silicon Labs USB bridge with a USB 2.0 UART interface in a 28-QFN package. The listed package is 5 mm by 5 mm, and the integrated USB 2.0 full-speed function controller operates without additional external USB components according to the manufacturer-linked Mouser datasheet source. The device is therefore suited to compact boards where a discrete USB transceiver and separate serial interface would increase component count and PCB area. The CP2101 family is intended for updating RS-232 designs to USB with minimal components and PCB space. Typical engineering uses include programming and configuration ports, industrial equipment, instrumentation, data acquisition, and embedded control systems. The integrated oscillator and EEPROM are particularly useful when minimizing external support circuitry is a priority, while the asynchronous UART supports host-to-device serial communication through a standard bridge architecture. The verified data confirms that the CP2101 is a mature product and is not recommended for new designs; the manufacturer-linked documentation identifies the CP2102 as a pin- and software-compatible alternative recommended for new designs. Existing CP2101-GM designs should therefore be evaluated for lifecycle, driver, and supply-chain considerations before committing to long-term production. A replacement must also be checked for exact footprint, electrical limits, firmware, and host-driver behavior rather than relying only on the USB-to-UART function label. For layout, place the device and its supporting components close to the USB connector and keep high-speed USB traces short and continuous. USB differential routing, grounding, decoupling, and connector placement can materially affect signal integrity even though the CP2101 integrates the USB transceiver. The page consolidates verified distributor listings, official-linked documentation, alternative guidance, and design considerations into one procurement-oriented component record.

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CP2101-GMR - USB 2.0 to UART Bridge | Silicon Labs
CP2101-GMR

CP2101-GMR - USB 2.0 to UART Bridge | Silicon Labs

The Silicon Labs CP2101-GMR is a highly integrated USB-to-UART bridge controller with a USB 2.0 interface, 28-QFN 5 x 5 mm package, and integrated USB transceiver. It provides a compact bridge for updating RS-232 designs to USB while requiring minimal external components and PCB space. The device supports a 3 V to 3.6 V supply range and is supplied in tape-and-reel packaging for surface-mount manufacturing. A USB-to-UART bridge is an interface IC that translates USB host traffic into a conventional UART serial stream, allowing legacy serial equipment, embedded controllers, and service ports to communicate through a USB connector. The CP2101 belongs to the USB interface-controller and interface-IC hierarchy, where USB signaling, UART conversion, clocking, and device identification are consolidated into one controller. Its integrated USB transceiver removes the need for external USB transceiver resistors, while its integrated clock eliminates the need for an external crystal in supported configurations. The CP2101-GMR provides 28 QFN pins and includes an integrated 512-byte EEPROM according to the verified distributor and technical search data. The device is identified as a USB-to-UART controller for USB applications and is available in a lead-free, RoHS-compatible package designation. The search data identifies the CP2101 as a mature product that is not recommended for new designs, while the CP2102 is described as a pin- and software-compatible alternative recommended for new designs. Typical uses include USB-to-RS-232 adapters, embedded development systems, industrial equipment, instrumentation, and legacy serial-port upgrades. Designers should evaluate the CP2102 family for new products when appropriate because the verified CP2101 data sheet material identifies CP2101 as mature and points engineers to CP2102 for new designs. Existing CP2101-GMR boards can use the device when its supply, package, driver, and interface requirements remain unchanged. Layout should preserve the exposed-pad thermal and electrical requirements of the 28-QFN package, route USB differential pairs with controlled impedance, and follow the manufacturer’s recommended decoupling and grounding arrangement. For a replacement decision, verify the exact package, pinout, USB power configuration, UART voltage levels, and host-driver behavior rather than relying only on the USB-to-UART function.

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CP2101R - USB 2.0 to UART Bridge, 28-VFQFN | Silicon Labs
CP2101R

CP2101R - USB 2.0 to UART Bridge, 28-VFQFN | Silicon Labs

The Silicon Labs CP2101R is a highly integrated USB-to-UART bridge controller with a 3 V to 3.6 V supply range, USB 2.0 interface, and asynchronous UART capability, supplied in a 28-VFQFN exposed-pad package measuring 5 mm by 5 mm. It provides a compact bridge between a USB host and legacy serial equipment while minimizing the external circuitry and board space needed for a conventional USB-to-RS-232 design. 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.

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CP2102-GM - USB-to-UART Bridge, QFN-28 | Silicon Laboratories
CP2102-GM

CP2102-GM - USB-to-UART Bridge, QFN-28 | Silicon Laboratories

The Silicon Laboratories CP2102-GM is a highly integrated USB-to-UART Bridge Controller that provides a compact solution for migrating RS-232 designs to USB using a minimum of components and PCB area, packaged in a 5x5 mm 28-pin QFN (QFN-28) with exposed thermal pad. The device integrates a USB 2.0 full-speed function controller, USB transceiver, on-chip oscillator, internal EEPROM, and an asynchronous serial data bus (UART) with full modem control signals, eliminating the need for external USB components. A USB-to-UART bridge controller is a type of bridge IC that sits between a USB host and a legacy UART peripheral, translating USB protocol packets into asynchronous serial bytes and vice versa. In the broader taxonomy, the CP2102-GM belongs to interface ICs (USB bridge controllers), which are a sub-category of communication interface semiconductors that enable protocol translation between modern serial buses and legacy parallel/asynchronous interfaces used in microcontrollers, sensors, and embedded modems. Key features include a 3.0 V to 3.6 V single supply operation, integrated 3.3 V LDO voltage regulator, support for data rates from 300 baud up to 921.6 kbaud, and full modem control signals (RTS, CTS, DTR, DSR, DCD, RI). The internal 1024-byte EEPROM stores customizable product ID, vendor ID, serial number, and GPIO configuration, while royalty-free virtual COM port (VCP) drivers are provided for Windows, macOS, and Linux hosts. The device's architecture combines a USB 2.0 full-speed PHY, an 8051-compatible microcontroller core running the on-chip firmware, and a hardware UART block, with all clock generation handled internally. This integration removes the need for an external crystal, oscillator, or USB termination resistors, dramatically simplifying USB-enabling of legacy microcontroller designs where BOM count is critical. Typical applications include microcontroller-to-USB connectivity on evaluation boards and development kits, industrial point-of-sale terminals, USB dongles for legacy serial equipment, GPS module interfaces, and embedded debug/programming ports. The compact QFN-28 package suits space-constrained PCB layouts where a through-hole DB-9 connector would be impractical. When designing with the CP2102-GM, follow the bus-powered vs self-powered connection diagrams in the Silicon Labs datasheet, since the USB VBUS pin must be routed through a voltage divider when the device is self-powered. Suspend current can be as low as 100 uA, allowing the design to meet USB suspend-current requirements without additional power switching. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that go beyond what is found in the manufacturer datasheet alone.

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CP2102-GMR - USB-to-UART Bridge, QFN-28 | Silicon Laboratories (Tape & Reel)
CP2102-GMR

CP2102-GMR - USB-to-UART Bridge, QFN-28 | Silicon Laboratories (Tape & Reel)

The Silicon Laboratories CP2102-GMR is a highly integrated USB-to-UART Bridge Controller that provides a compact solution for migrating RS-232 designs to USB using a minimum of components and PCB area, packaged in a 5x5 mm 28-pin QFN (QFN-28) with exposed thermal pad. The device integrates a USB 2.0 full-speed function controller, USB transceiver, on-chip oscillator, internal EEPROM, and an asynchronous serial data bus (UART) with full modem control signals, eliminating the need for external USB components. A USB-to-UART bridge controller is a type of bridge IC that sits between a USB host and a legacy UART peripheral, translating USB protocol packets into asynchronous serial bytes and vice versa. In the broader taxonomy, the CP2102-GMR belongs to interface ICs (USB bridge controllers), which are a sub-category of communication interface semiconductors that enable protocol translation between modern serial buses and legacy parallel/asynchronous interfaces used in microcontrollers, sensors, and embedded modems. Key features include a 3.0 V to 3.6 V single supply operation, integrated 3.3 V LDO voltage regulator, support for data rates from 300 baud up to 921.6 kbaud, and full modem control signals (RTS, CTS, DTR, DSR, DCD, RI). The internal 1024-byte EEPROM stores customizable product ID, vendor ID, serial number, and GPIO configuration, while royalty-free virtual COM port (VCP) drivers are provided for Windows, macOS, and Linux hosts. The device's architecture combines a USB 2.0 full-speed PHY, an 8051-compatible microcontroller core running the on-chip firmware, and a hardware UART block, with all clock generation handled internally. This integration removes the need for an external crystal, oscillator, or USB termination resistors, dramatically simplifying USB-enabling of legacy microcontroller designs where BOM count is critical. Typical applications include microcontroller-to-USB connectivity on evaluation boards and development kits, industrial point-of-sale terminals, USB dongles for legacy serial equipment, GPS module interfaces, and embedded debug/programming ports. The compact QFN-28 package suits space-constrained PCB layouts where a through-hole DB-9 connector would be impractical. When designing with the CP2102-GMR, follow the bus-powered vs self-powered connection diagrams in the Silicon Labs datasheet, since the USB VBUS pin must be routed through a voltage divider when the device is self-powered. Suspend current can be as low as 100 uA, allowing the design to meet USB suspend-current requirements without additional power switching. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that go beyond what is found in the manufacturer datasheet alone.

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CP2102N-A01-GQFN20 USB 2.0 UART Bridge | Silicon Labs
CP2102N-A01-GQFN20

CP2102N-A01-GQFN20 USB 2.0 UART Bridge | Silicon Labs

The Silicon Labs CP2102N-A01-GQFN20 is a USB 2.0 full-speed USB-to-UART bridge IC with four digital I/O pins, an integrated USB transceiver, oscillator, and UART, housed in a 20-QFN package measuring 3 mm by 3 mm. According to the Silicon Labs CP2102N data sheet, the device supports a 3 V to 3.6 V supply range and provides an integrated 3.3 V regulator output for compatible USB power designs. A USB-to-UART bridge is an interface controller that converts between USB connectivity and asynchronous serial data. It belongs to the broader hierarchy of interface ICs, USB controllers, USB interface bridges, and data-conversion semiconductors. This device is intended to simplify RS-232-to-USB modernization, firmware-free USB enumeration, and embedded serial connectivity by integrating the required USB and UART functions in one compact component. The CP2102N-A01-GQFN20 combines a USB 2.0 full-speed function controller, USB transceiver, integrated clock, UART, programmable vendor and product identification, serial-number support, and four digital I/O pins. According to the manufacturer data sheet, no external USB components are required for development, and an internal 960-byte programmable ROM stores device identification and descriptor information. The compact package helps reduce board area in space-constrained USB-to-serial designs. The integrated clock removes the need for an external crystal in the referenced USB design application, while the integrated transceiver supports direct USB connectivity. The four digital I/O pins provide additional control or status functions beyond the primary USB and UART interfaces. This integration is valuable when a design needs a small USB-to-UART bridge without implementing USB protocol firmware. Typical applications include industrial control equipment, test and measurement instruments, data loggers, configuration interfaces, serial adapters, embedded development boards, and legacy RS-232 systems converted to USB. The 3 mm by 3 mm package is particularly useful where connector placement and board area are constrained. When designing a board, route USB differential pairs as a controlled-impedance pair and keep the connector, protection components, and transceiver path physically compact. Confirm the exact package pinout and exposed-pad connection in the Silicon Labs data sheet before layout release. Commercial pricing and availability should be checked against distributor records as of 2026-10-22. This page consolidates manufacturer specifications, verified distributor references, cross-reference findings, and practical design considerations for engineers evaluating the CP2102N-A01-GQFN20 USB-to-UART bridge.

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CP2102N-A01-GQFN20R USB 2.0 UART Bridge | Silicon Labs (Tape & Reel)
CP2102N-A01-GQFN20R

CP2102N-A01-GQFN20R USB 2.0 UART Bridge | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A01-GQFN20R is a USB 2.0 full-speed USB-to-UART bridge IC with four digital I/O pins, an integrated USB transceiver, oscillator, and UART, housed in a 20-QFN package measuring 3 mm by 3 mm. According to the Silicon Labs CP2102N data sheet, the device supports a 3 V to 3.6 V supply range and provides an integrated 3.3 V regulator output for compatible USB power designs. A USB-to-UART bridge is an interface controller that converts between USB connectivity and asynchronous serial data. It belongs to the broader hierarchy of interface ICs, USB controllers, USB interface bridges, and data-conversion semiconductors. This device is intended to simplify RS-232-to-USB modernization, firmware-free USB enumeration, and embedded serial connectivity by integrating the required USB and UART functions in one compact component. The CP2102N-A01-GQFN20R combines a USB 2.0 full-speed function controller, USB transceiver, integrated clock, UART, programmable vendor and product identification, serial-number support, and four digital I/O pins. According to the manufacturer data sheet, no external USB components are required for development, and an internal 960-byte programmable ROM stores device identification and descriptor information. The compact package helps reduce board area in space-constrained USB-to-serial designs. The integrated clock removes the need for an external crystal in the referenced USB design application, while the integrated transceiver supports direct USB connectivity. The four digital I/O pins provide additional control or status functions beyond the primary USB and UART interfaces. This integration is valuable when a design needs a small USB-to-UART bridge without implementing USB protocol firmware. Typical applications include industrial control equipment, test and measurement instruments, data loggers, configuration interfaces, serial adapters, embedded development boards, and legacy RS-232 systems converted to USB. The 3 mm by 3 mm package is particularly useful where connector placement and board area are constrained. When designing a board, route USB differential pairs as a controlled-impedance pair and keep the connector, protection components, and transceiver path physically compact. Confirm the exact package pinout and exposed-pad connection in the Silicon Labs data sheet before layout release. Commercial pricing and availability should be checked against distributor records as of 2026-10-22. This page consolidates manufacturer specifications, verified distributor references, cross-reference findings, and practical design considerations for engineers evaluating the CP2102N-A01-GQFN20R USB-to-UART bridge.

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CP2102N-A01-GQFN24 USB-to-UART Bridge | Silicon Labs
CP2102N-A01-GQFN24

CP2102N-A01-GQFN24 USB-to-UART Bridge | Silicon Labs

The Silicon Labs CP2102N-A01-GQFN24 is a USB 2.0 full-speed to UART interface bridge with four GPIOs and separate VDD and VIO pins, housed in a 24-QFN package measuring 4 mm by 4 mm. Designed as part of the USBXpress family, it adds USB connectivity to embedded products without requiring a separate USB transceiver, oscillator, or host-side firmware. The bridge combines a USB controller, USB transceiver, internal oscillator, UART, and four general-purpose I/O functions to reduce board size and design effort. 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.

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CP2102N-A01-GQFN24R USB-to-UART Bridge | Silicon Labs (Tape & Reel)
CP2102N-A01-GQFN24R

CP2102N-A01-GQFN24R USB-to-UART Bridge | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A01-GQFN24R is a USB 2.0 full-speed to UART interface bridge with four GPIOs and separate VDD and VIO pins, housed in a 24-QFN package measuring 4 mm by 4 mm. Designed as part of the USBXpress family, it adds USB connectivity to embedded products without requiring a separate USB transceiver, oscillator, or host-side firmware. The bridge combines a USB controller, USB transceiver, internal oscillator, UART, and four general-purpose I/O functions to reduce board size and design effort. 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.

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CP2102N-A01-GQFN28 - USB to UART Bridge QFN-28 | Silicon Labs (Tape & Reel)
CP2102N-A01-GQFN28

CP2102N-A01-GQFN28 - USB to UART Bridge QFN-28 | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A01-GQFN28 is a USB-to-UART bridge controller from the USBXpress family, providing a single-chip solution for adding USB 2.0 full-speed connectivity to UART peripherals. The device integrates a USB 2.0 full-speed function controller, USB transceiver, on-chip oscillator, and an internal 3.3V LDO regulator in a 28-pin QFN (5x5 mm) package with USB 2.0 UART interface support. A USB-to-UART bridge is a class of protocol converter IC that translates USB signaling into asynchronous serial (UART) signaling, allowing legacy RS-232/RS-485 devices, microcontroller debug ports, and sensor nodes to communicate with a host PC over the USB bus without writing USB firmware. Bridges like the CP2102N live in the hierarchy: USB bridge IC -> interface IC -> connectivity IC -> mixed-signal semiconductor. They are a faster, lower-risk alternative to embedding a USB stack in firmware, and they typically enumerate as a Virtual COM Port (VCP) so existing serial-terminal software works unmodified. The CP2102N-A01 delivers USB 2.0 full-speed (12 Mbps) signaling, supports data rates from 300 baud to 1 Mbaud, integrates a 3.3V LDO with enough headroom to source 100 mA on VIO, and provides GPIO pins plus a hardware reset input (RSTb). The on-chip oscillator and internal voltage regulator remove the need for an external crystal and an external 3.3V rail when the host port supplies 5V bus power. These features let a designer replace a discrete USB-UART implementation with one 5x5 mm QFN. Under the hood, the CP2102N uses a hard-wired USB function-state machine and a programmable baud-rate generator rather than a soft USB stack, which means there is no firmware to maintain on the device itself. The host-side driver (Silicon Labs CP210x VCP) supplies the COM-port abstraction, while the silicon handles NRZI encoding, bit stuffing, packet ACK/NAK, and suspend/resume power management. Typical applications include microcontroller debug and programming adapters (especially for ARM Cortex-M and AVR parts without native USB), industrial sensor-to-USB bridges, point-of-sale terminals, USB dongles for wireless modules, and field-upgrade serial console ports on embedded Linux systems. The wide baud-rate range also supports legacy RS-232 equipment running at non-standard rates. When designing with the CP2102N-A01-GQFN28, observe the bus-powered voltage-divider requirement documented in Silicon Labs AN976: a resistor divider on VBUS is required to bring the 5V supply within the device's absolute-maximum rating. Use the CP210x VCP driver on the host, and respect the 6-byte internal EEPROM signature if you intend to customize USB descriptors (VID/PID/strings). This page synthesizes distributor pricing, drop-in QFN-28 alternatives from both Silicon Labs and competitors, and practical design notes that go beyond the bare datasheet summary.

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CP2102N-A01-GQFN28R - USB to UART Bridge QFN-28 | Silicon Labs
CP2102N-A01-GQFN28R

CP2102N-A01-GQFN28R - USB to UART Bridge QFN-28 | Silicon Labs

The Silicon Labs CP2102N-A01-GQFN28R is a USB-to-UART bridge controller from the USBXpress family, providing a single-chip solution for adding USB 2.0 full-speed connectivity to UART peripherals. The device integrates a USB 2.0 full-speed function controller, USB transceiver, on-chip oscillator, and an internal 3.3V LDO regulator in a 28-pin QFN (5x5 mm) package with USB 2.0 UART interface support. A USB-to-UART bridge is a class of protocol converter IC that translates USB signaling into asynchronous serial (UART) signaling, allowing legacy RS-232/RS-485 devices, microcontroller debug ports, and sensor nodes to communicate with a host PC over the USB bus without writing USB firmware. Bridges like the CP2102N live in the hierarchy: USB bridge IC -> interface IC -> connectivity IC -> mixed-signal semiconductor. They are a faster, lower-risk alternative to embedding a USB stack in firmware, and they typically enumerate as a Virtual COM Port (VCP) so existing serial-terminal software works unmodified. The CP2102N-A01 delivers USB 2.0 full-speed (12 Mbps) signaling, supports data rates from 300 baud to 1 Mbaud, integrates a 3.3V LDO with enough headroom to source 100 mA on VIO, and provides GPIO pins plus a hardware reset input (RSTb). The on-chip oscillator and internal voltage regulator remove the need for an external crystal and an external 3.3V rail when the host port supplies 5V bus power. These features let a designer replace a discrete USB-UART implementation with one 5x5 mm QFN. Under the hood, the CP2102N uses a hard-wired USB function-state machine and a programmable baud-rate generator rather than a soft USB stack, which means there is no firmware to maintain on the device itself. The host-side driver (Silicon Labs CP210x VCP) supplies the COM-port abstraction, while the silicon handles NRZI encoding, bit stuffing, packet ACK/NAK, and suspend/resume power management. Typical applications include microcontroller debug and programming adapters (especially for ARM Cortex-M and AVR parts without native USB), industrial sensor-to-USB bridges, point-of-sale terminals, USB dongles for wireless modules, and field-upgrade serial console ports on embedded Linux systems. The wide baud-rate range also supports legacy RS-232 equipment running at non-standard rates. When designing with the CP2102N-A01-GQFN28R, observe the bus-powered voltage-divider requirement documented in Silicon Labs AN976: a resistor divider on VBUS is required to bring the 5V supply within the device's absolute-maximum rating. Use the CP210x VCP driver on the host, and respect the 6-byte internal EEPROM signature if you intend to customize USB descriptors (VID/PID/strings). This page synthesizes distributor pricing, drop-in QFN-28 alternatives from both Silicon Labs and competitors, and practical design notes that go beyond the bare datasheet summary.

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CP2102N-A02-GQFN20 - USB to UART Bridge, QFN-20 | Silicon Labs
CP2102N-A02-GQFN20

CP2102N-A02-GQFN20 - USB to UART Bridge, QFN-20 | Silicon Labs

The Silicon Labs CP2102N-A02-GQFN20 is a highly integrated USB-to-UART bridge controller in the USBXpress family, packaged in a 20-pin QFN (3x3 mm) with built-in USB 2.0 full-speed function controller, on-chip transceiver, internal oscillator, and Universal Asynchronous Receiver/Transmitter operating from 3.0 V to 3.6 V supply. A USB-to-UART bridge, also called a USB interface IC or USB-serial converter, is a class of mixed-signal device that converts a USB physical layer (USB 2.0 full-speed) into an asynchronous serial interface. It sits in the broader hierarchy of interface ICs (bridge ICs -> protocol converters -> connectivity ICs -> semiconductors) and replaces legacy RS-232 transceivers with a single-chip, driver-supported solution requiring no external USB components. The bridge transparently handles USB enumeration, bulk transfer, and UART signaling so the host MCU firmware can treat the link as a simple COM port or /dev/tty device. Key features of the CP2102N-A02-GQFN20 include four configurable GPIO pins, a battery charger detect function for portable designs, support for data formats from 5 to 8 data bits with or without parity, hardware and software flow control (RTS/CTS, XON/XOFF), and a 1024-byte buffer for high-throughput UART operation. The integrated 3.3 V LDO regulator, on-chip oscillator, and internal pull-up resistors eliminate the need for most external components, shrinking the BOM to a few decoupling capacitors plus optional ESD protection. The architecture is built around a USB 2.0 full-speed (12 Mbps) SIE, an internal 48 MHz oscillator, ROM-based firmware accessed via the Virtual COM Port (VCP) driver or USBXpress direct API, and a flexible UART block with independent TX/R FIFOs. The A02 revision is the recommended replacement for the older A01 revision and is pin-compatible with A01-GQFN20 footprints. The compact 3x3 mm QFN package and minimal external part count make it ideal for space-constrained USB Type-C dongles, embedded debug headers, and industrial sensor interfaces. Typical applications include USB-to-UART debug consoles on MCU development boards, industrial point-of-sale terminals, portable medical USB instrument front-ends, IoT gateways, and field-upgradable firmware service ports. The integrated driver support for Windows, macOS, and Linux VCP modes, combined with Silicon Labs' USBXpress host libraries, accelerates time-to-market for designs that previously required custom USB stacks. When designing with this part, place the 4.7uF VBUS decoupling and 100 nF VDD bypass capacitors as close to the IC pins as possible to meet USB 2.0 signal-integrity requirements. The D+ line typically requires a 1.5 kOhm pull-up to 3.3 V for full-speed device detection, and an external 10 kOhm pull-down on TXD is required for Send-Break signaling.

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CP2102N-A02-GQFN20R - USB to UART Bridge, QFN-20 | Silicon Labs (Tape & Reel)
CP2102N-A02-GQFN20R

CP2102N-A02-GQFN20R - USB to UART Bridge, QFN-20 | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A02-GQFN20R is a highly integrated USB-to-UART bridge controller in the USBXpress family, packaged in a 20-pin QFN (3x3 mm) with built-in USB 2.0 full-speed function controller, on-chip transceiver, internal oscillator, and Universal Asynchronous Receiver/Transmitter operating from 3.0 V to 3.6 V supply. A USB-to-UART bridge, also called a USB interface IC or USB-serial converter, is a class of mixed-signal device that converts a USB physical layer (USB 2.0 full-speed) into an asynchronous serial interface. It sits in the broader hierarchy of interface ICs (bridge ICs -> protocol converters -> connectivity ICs -> semiconductors) and replaces legacy RS-232 transceivers with a single-chip, driver-supported solution requiring no external USB components. The bridge transparently handles USB enumeration, bulk transfer, and UART signaling so the host MCU firmware can treat the link as a simple COM port or /dev/tty device. Key features of the CP2102N-A02-GQFN20R include four configurable GPIO pins, a battery charger detect function for portable designs, support for data formats from 5 to 8 data bits with or without parity, hardware and software flow control (RTS/CTS, XON/XOFF), and a 1024-byte buffer for high-throughput UART operation. The integrated 3.3 V LDO regulator, on-chip oscillator, and internal pull-up resistors eliminate the need for most external components, shrinking the BOM to a few decoupling capacitors plus optional ESD protection. The architecture is built around a USB 2.0 full-speed (12 Mbps) SIE, an internal 48 MHz oscillator, ROM-based firmware accessed via the Virtual COM Port (VCP) driver or USBXpress direct API, and a flexible UART block with independent TX/R FIFOs. The A02 revision is the recommended replacement for the older A01 revision and is pin-compatible with A01-GQFN20 footprints. The compact 3x3 mm QFN package and minimal external part count make it ideal for space-constrained USB Type-C dongles, embedded debug headers, and industrial sensor interfaces. Typical applications include USB-to-UART debug consoles on MCU development boards, industrial point-of-sale terminals, portable medical USB instrument front-ends, IoT gateways, and field-upgradable firmware service ports. The integrated driver support for Windows, macOS, and Linux VCP modes, combined with Silicon Labs' USBXpress host libraries, accelerates time-to-market for designs that previously required custom USB stacks. When designing with this part, place the 4.7uF VBUS decoupling and 100 nF VDD bypass capacitors as close to the IC pins as possible to meet USB 2.0 signal-integrity requirements. The D+ line typically requires a 1.5 kOhm pull-up to 3.3 V for full-speed device detection, and an external 10 kOhm pull-down on TXD is required for Send-Break signaling.

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CP2102N-A02-GQFN24 USB-UART Bridge | Silicon Labs
CP2102N-A02-GQFN24

CP2102N-A02-GQFN24 USB-UART Bridge | Silicon Labs

The Silicon Labs CP2102N-A02-GQFN24 is a USB 2.0 full-speed to UART interface bridge in a 24-QFN 4 mm by 4 mm package, integrating four digital I/O pins. It supports a 3 V to 3.6 V operating-supply range and is designed to add USB connectivity without requiring a separate USB transceiver, oscillator, or UART controller. A USB-to-UART bridge, also called a USB serial interface adapter or interface bridge, converts a USB host connection into a conventional asynchronous serial data path. Within the semiconductor hierarchy, it belongs to interface ICs and system-interface controllers. This device is part of Silicon Labs' USBXpress family and is intended to reduce firmware complexity, external component count, and development time when replacing an RS-232 design with USB. The CP2102N combines a USB 2.0 full-speed function controller, USB transceiver, oscillator, UART, and four digital I/O pins. USBXpress firmware support allows the host software to present a logical serial port while the bridge handles the USB-to-UART conversion. The 24-QFN package supports compact industrial, embedded, communications, and legacy-equipment designs where board area and USB integration are important. The four digital I/O pins provide additional control or status connections beyond the serial interface. Their exact electrical limits, supported logic levels, and application-specific usage must be taken from the manufacturer datasheet rather than inferred from the package description. Likewise, UART baud-rate limits, transceiver current, and clock requirements are not quantified in the supplied search data and are marked for data completion where applicable. Typical uses include USB-to-UART service ports, embedded debug adapters, industrial controllers, data-acquisition equipment, and update interfaces for existing serial products. The integrated USB 2.0 full-speed controller and internal oscillator reduce the number of external interface components compared with a discrete USB implementation. PCB layout should follow the manufacturer's recommended USB trace and decoupling guidance. Keep the USB differential pair short, controlled, and routed away from noisy analog or switching nodes; place required bypass capacitors close to the supply pins; and verify the exposed-pad or thermal arrangement against the package drawing before release to fabrication. This product-data synthesis combines the verified manufacturer and distributor links, package identity, interface hierarchy, and porting information with practical implementation guidance. It does not invent undocumented electrical limits or cross-brand substitutes that cannot be proven pin-to-pin compatible.

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CP2102N-A02-GQFN24R USB-UART Bridge | Silicon Labs (Tape & Reel)
CP2102N-A02-GQFN24R

CP2102N-A02-GQFN24R USB-UART Bridge | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A02-GQFN24R is a USB 2.0 full-speed to UART interface bridge in a 24-QFN 4 mm by 4 mm package, integrating four digital I/O pins. It supports a 3 V to 3.6 V operating-supply range and is designed to add USB connectivity without requiring a separate USB transceiver, oscillator, or UART controller. A USB-to-UART bridge, also called a USB serial interface adapter or interface bridge, converts a USB host connection into a conventional asynchronous serial data path. Within the semiconductor hierarchy, it belongs to interface ICs and system-interface controllers. This device is part of Silicon Labs' USBXpress family and is intended to reduce firmware complexity, external component count, and development time when replacing an RS-232 design with USB. The CP2102N combines a USB 2.0 full-speed function controller, USB transceiver, oscillator, UART, and four digital I/O pins. USBXpress firmware support allows the host software to present a logical serial port while the bridge handles the USB-to-UART conversion. The 24-QFN package supports compact industrial, embedded, communications, and legacy-equipment designs where board area and USB integration are important. The four digital I/O pins provide additional control or status connections beyond the serial interface. Their exact electrical limits, supported logic levels, and application-specific usage must be taken from the manufacturer datasheet rather than inferred from the package description. Likewise, UART baud-rate limits, transceiver current, and clock requirements are not quantified in the supplied search data and are marked for data completion where applicable. Typical uses include USB-to-UART service ports, embedded debug adapters, industrial controllers, data-acquisition equipment, and update interfaces for existing serial products. The integrated USB 2.0 full-speed controller and internal oscillator reduce the number of external interface components compared with a discrete USB implementation. PCB layout should follow the manufacturer's recommended USB trace and decoupling guidance. Keep the USB differential pair short, controlled, and routed away from noisy analog or switching nodes; place required bypass capacitors close to the supply pins; and verify the exposed-pad or thermal arrangement against the package drawing before release to fabrication. This product-data synthesis combines the verified manufacturer and distributor links, package identity, interface hierarchy, and porting information with practical implementation guidance. It does not invent undocumented electrical limits or cross-brand substitutes that cannot be proven pin-to-pin compatible.

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CP2102N-A02-GQFN28 USB-to-UART Bridge, QFN28 | Silicon Labs
CP2102N-A02-GQFN28

CP2102N-A02-GQFN28 USB-to-UART Bridge, QFN28 | Silicon Labs

The Silicon Labs CP2102N-A02-GQFN28 is a single-chip USB-to-UART bridge controller in the USBXpress family, housed in a 28-pin QFN (5x5 mm) package. It integrates a USB 2.0 full-speed function controller, USB transceiver, internal 48 MHz oscillator, voltage regulator (3.3 V output), one-time-programmable ROM for vendor/product descriptors, and a UART engine, while requiring no external USB resistors or crystal. The CP2102N-A02 revision supplies 3 V to 3.6 V on VDD and supports programmable baud rates up to 3 Mbaud with hardware flow control. A USB-to-UART bridge is a class of interface IC that converts USB signaling on the host side to asynchronous serial (UART) signaling on the device side, eliminating the need for firmware-side USB stack development. Bridges sit in the interface-IC taxonomy between USB transceivers and protocol converters, and they are commonly used as drop-in serial-port replacements on embedded designs. Key features include 7 configurable digital I/O pins, FIFO buffers, hardware flow control (RTS/CTS), power-on reset, suspend and resume signaling, and GPIO that can be controlled through the Silicon Labs VCP/Silicon Labs USBXpress host drivers. The integrated 3.3 V LDO can supply up to 100 mA to external circuitry, which is sufficient for low-current companion logic. The A02 silicon revision is the production-current revision per Silicon Labs AN1505 and the CP2102N datasheet. Architecturally, the device combines an on-chip USB 2.0 full-speed PHY, a hardware UART engine, a one-time-programmable ROM (960 bytes), and an integrated clock and regulator. This high level of integration lets a designer add a COM port to any embedded system using only the CP2102N, a USB connector, and four decoupling capacitors, with no firmware USB stack required when the host-side VCP driver is used. Typical applications include industrial sensor modules, point-of-sale terminals, USB-to-RS232 adapters, USB-to-RS485 dongles, embedded debug consoles, and any microcontroller-based product that needs to expose a virtual COM port to a PC. Compared to the legacy CP2102-GM (QSSOP-28), the CP2102N-A02-GQFN28 delivers faster baud rates (3 Mbaud vs 921 kbps on CP2102-GM), tighter integration, and lower BOM count. Design consideration: place the VBUS, VDD, and VIO decoupling caps within 2 mm of their respective pins, and route the USB DP/DM traces as a 90 ohm differential pair. The internal regulator cannot be bypassed; for self-powered designs add the voltage divider shown in Silicon Labs AN1505. This page consolidates distributor pricing, drop-in alternatives (CP2102N-A01-GQFN28, CP2102N-A02-GQFN28R, CP2102C-A01-GQFN28), and PCB design notes not aggregated on a single manufacturer datasheet page.

USD $2,35 En stock
CP2102N-A02-GQFN28R USB-to-UART Bridge, QFN28 | Silicon Labs (Tape & Reel)
CP2102N-A02-GQFN28R

CP2102N-A02-GQFN28R USB-to-UART Bridge, QFN28 | Silicon Labs (Tape & Reel)

The Silicon Labs CP2102N-A02-GQFN28R is a single-chip USB-to-UART bridge controller in the USBXpress family, housed in a 28-pin QFN (5x5 mm) package. It integrates a USB 2.0 full-speed function controller, USB transceiver, internal 48 MHz oscillator, voltage regulator (3.3 V output), one-time-programmable ROM for vendor/product descriptors, and a UART engine, while requiring no external USB resistors or crystal. The CP2102N-A02 revision supplies 3 V to 3.6 V on VDD and supports programmable baud rates up to 3 Mbaud with hardware flow control. A USB-to-UART bridge is a class of interface IC that converts USB signaling on the host side to asynchronous serial (UART) signaling on the device side, eliminating the need for firmware-side USB stack development. Bridges sit in the interface-IC taxonomy between USB transceivers and protocol converters, and they are commonly used as drop-in serial-port replacements on embedded designs. Key features include 7 configurable digital I/O pins, FIFO buffers, hardware flow control (RTS/CTS), power-on reset, suspend and resume signaling, and GPIO that can be controlled through the Silicon Labs VCP/Silicon Labs USBXpress host drivers. The integrated 3.3 V LDO can supply up to 100 mA to external circuitry, which is sufficient for low-current companion logic. The A02 silicon revision is the production-current revision per Silicon Labs AN1505 and the CP2102N datasheet. Architecturally, the device combines an on-chip USB 2.0 full-speed PHY, a hardware UART engine, a one-time-programmable ROM (960 bytes), and an integrated clock and regulator. This high level of integration lets a designer add a COM port to any embedded system using only the CP2102N, a USB connector, and four decoupling capacitors, with no firmware USB stack required when the host-side VCP driver is used. Typical applications include industrial sensor modules, point-of-sale terminals, USB-to-RS232 adapters, USB-to-RS485 dongles, embedded debug consoles, and any microcontroller-based product that needs to expose a virtual COM port to a PC. Compared to the legacy CP2102-GM (QSSOP-28), the CP2102N-A02-GQFN28R delivers faster baud rates (3 Mbaud vs 921 kbps on CP2102-GM), tighter integration, and lower BOM count. Design consideration: place the VBUS, VDD, and VIO decoupling caps within 2 mm of their respective pins, and route the USB DP/DM traces as a 90 ohm differential pair. The internal regulator cannot be bypassed; for self-powered designs add the voltage divider shown in Silicon Labs AN1505. This page consolidates distributor pricing, drop-in alternatives (CP2102N-A01-GQFN28, CP2102N-A02-GQFN28RR, CP2102C-A01-GQFN28), and PCB design notes not aggregated on a single manufacturer datasheet page.

USD $2,35 En stock
CP2103-GM USB 2.0 to UART Bridge | Silicon Labs
CP2103-GM

CP2103-GM USB 2.0 to UART Bridge | Silicon Labs

The Silicon Labs CP2103-GM is an integrated USB 2.0-to-UART bridge controller with a 28-QFN 5 mm × 5 mm package and a stated operating voltage of 1.8 V to 3.6 V. It provides a compact interface for connecting legacy RS-232 or RS-485 equipment to a USB host while minimizing external components and PCB space. The device combines USB transceiver, UART bridge, clock, and programmable USB interface functions on one chip. According to the available manufacturer-linked documentation and distributor records, it supports USB-to-UART data transfer and is designed for upgrading existing serial-port designs to USB. A USB-to-UART bridge controller is a class of USB interface controller that translates USB host transactions into a conventional UART serial stream. In the product hierarchy, CP2103-GM belongs to the USB interface-controller and USB-to-UART bridge category, which sits within broader interface semiconductors and embedded connectivity solutions. Its value is especially relevant when a modern computer has no native RS-232 port but an instrument, industrial controller, service tool, or data-acquisition product still exposes a serial interface. Available verified data identifies the CP2103-GM as a 28-QFN USB bridge with USB 2.0 and UART interfaces. Search results also describe an integrated USB transceiver, integrated clock, and an integrated 1024-byte EEPROM for identifiers and device information. These features can reduce the number of discrete USB-interface components required in a design. The integrated clock is especially useful because it eliminates the need for an external crystal in applications that do not require a different clocking arrangement. The device is suitable for RS-232 and RS-485 modernization, USB-to-serial adapters, test equipment, programming interfaces, and embedded data links. RS-232 designs generally need appropriate line-level voltage handling, while RS-485 designs require a compatible transceiver and termination strategy; CP2103-GM alone is not a complete external RS-232 or RS-485 physical-layer solution. The host-side USB connection, UART signal integrity, voltage levels, grounding, and firmware support should therefore be validated together. Designers should verify the exact pinout, electrical limits, clocking configuration, USB enumeration behavior, and supported operating voltage from the manufacturer datasheet before layout or firmware release. A compact QFN footprint helps reduce board area, but exposed-pad thermal management and careful USB differential-pair routing remain important. Firmware should also handle the device identifier and serial-number configuration appropriate to the intended production process. This page combines verified distributor metadata, manufacturer-linked documentation references, and engineering guidance focused on USB-to-UART integration. It does not invent missing electrical limits, package dimensions, or alternative-device specifications; unavailable values are marked in the specification section for follow-up against the manufacturer datasheet.

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CP2103-GMR USB 2.0 to UART Bridge | Silicon Labs
CP2103-GMR

CP2103-GMR USB 2.0 to UART Bridge | Silicon Labs

The Silicon Labs CP2103-GMR is a USB 2.0-to-UART bridge controller with four digital I/O pins, an integrated 1024-byte EEPROM, and royalty-free drivers in a 28-pin QFN package measuring 5 x 5 mm. It converts between a USB host connection and an asynchronous serial data bus while supporting 3 V to 3.6 V operation. The CP2103-GMR is designed for compact embedded systems that need USB connectivity without implementing a USB protocol stack in the host or target controller. 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.

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CP2104-F03-GM - USB to UART Bridge QFN-24 | Silicon Labs
CP2104-F03-GM

CP2104-F03-GM - USB to UART Bridge QFN-24 | Silicon Labs

The Silicon Labs CP2104-F03-GM is a single-chip USB 2.0 full-speed to UART bridge controller housed in a 24-pin QFN (4x4 mm) package with exposed pad, featuring a 576-byte receive FIFO and 3.3 V I/O operation. A USB-to-UART bridge is an interface IC that converts between a USB bus and a serial UART (asynchronous serial) port. It sits at the bottom of the USB interface hierarchy - below USB hubs and USB controllers - and is a type of USB bridge controller within the broader Smart Interface family of connectivity ICs. Its role is to let a microcontroller or legacy RS-232/RS-485 design communicate with a modern USB host without redesigning the serial firmware. Key features include an integrated USB 2.0 full-speed (12 Mbps) transceiver, an integrated clock requiring no external crystal, integrated 1024-byte One-Time Programmable (OTP) ROM for customizing USB VID/PID and product strings, an on-chip power-on-reset circuit, and a 576-byte receive buffer. Because everything is integrated, a complete USB-to-serial design needs only the CP2104, two USB bus passives, and decoupling capacitors. Technically, the CP2104 implements the USB protocol stack and UART framing in silicon. Existing RS-232 boards can often be upgraded to USB by simply replacing the RS-232 level translator with the CP2104, since its UART signals (~TXD, ~RXD, ~RTS, ~CTS, ~DTR, ~DSR, ~DCD, ~RI) map directly to legacy handshake lines. Drivers are available through the Silicon Labs USBXpress suite and standard VCP (Virtual COM Port) drivers for Windows, macOS, and Linux. Typical applications include USB-to-serial debug and programming adapters, industrial RS-232/RS-485 to USB conversion, embedded system console ports, and consumer device firmware-update interfaces. Design consideration: note that Silicon Labs community posts indicate this part is Not Recommended for New Designs (NRND); port to the pin-compatible CP2102N using Silicon Labs application note AN976. This page adds distributor pricing, drop-in alternatives, pinout data, and design notes synthesized beyond the raw datasheet.

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CP2104-F03-GMR - USB 2.0 to UART Bridge QFN-24 | Silicon Labs
CP2104-F03-GMR

CP2104-F03-GMR - USB 2.0 to UART Bridge QFN-24 | Silicon Labs

The Silicon Labs CP2104-F03-GMR is a single-chip USB 2.0 to UART bridge controller delivered in a 24-pin QFN (4x4 mm) package with exposed pad. It integrates a USB 2.0 full-speed transceiver, an on-chip clock requiring no external crystal, a 576-byte FIFO buffer, and an on-chip voltage regulator with a 3.45 V output, operating from a 3.0 V to 3.6 V supply (1.8 V I/O capable via VIO). A USB-to-UART bridge is an interface IC that converts USB bus traffic into a standard asynchronous serial (UART) stream, allowing a host computer to communicate with embedded microcontrollers over a virtual COM port. Within the power-management and interface-IC hierarchy, it sits between the physical USB layer and the MCU serial peripheral, eliminating firmware development on the bridge side. Key features include a fully integrated USB transceiver (no external resistors), an integrated clock (no external crystal), a programmable baud rate from 300 bps to 2 Mbps, 1024 bytes of one-time-programmable ROM for custom VID/PID and product strings, and royalty-free virtual COM port drivers for Windows, macOS, and Linux. Four GPIO pins (GPIO.0 to GPIO.3) with hardware flow control (~RTS/~CTS, ~DTR/~DSR, ~DCD/~RI) provide flexible signaling. Architecturally, the CP2104 pairs a USB 2.0 full-speed (12 Mbps) device controller with a UART engine and on-chip power-on-reset circuitry. The integrated 3.45 V regulator can supply external circuitry at modest current, and SUSPEND/~SUSPEND outputs support USB bus power management. Typical applications include USB-to-serial programming and debug adapters, MCU bootloaders for kits such as ESP32 and Arduino-style boards, industrial controllers and data loggers, and embedded computing modules needing a plug-and-play serial link. Design tip: keep the 4.7 uF to 10 uF decoupling on VDD/VBUS close to the pins, connect REGIN to VBUS, and bias ~RST high with 4.7 kohm to avoid spurious enumeration resets. VIO lets the UART side interface with 1.8 V logic without level shifting. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet alone. Pricing shown as of 2026-10-20.

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CP2105-F01-GM - USB 2.0 Dual-UART Bridge | Silicon Labs
CP2105-F01-GM

CP2105-F01-GM - USB 2.0 Dual-UART Bridge | Silicon Labs

The Silicon Labs CP2105-F01-GM is a single-chip USB 2.0 full-speed to dual-UART bridge controller with USB 2.0, two asynchronous serial interfaces, full modem-control signals, five digital I/O pins, an integrated transceiver, an oscillator, and one-time programmable ROM in a compact 4 x 4 mm QFN-24 package. The verified distributor data identifies the device as a USB Bridge, USB-to-UART interface IC, and full-speed USB-to-UART tube solution. A USB-to-UART bridge is an interface IC that connects a USB host to legacy serial equipment. It converts USB traffic into one or more UART signals, allowing instruments, embedded systems, and service tools to use existing serial protocols without requiring a full USB controller in the host system. The CP2105 dual-UART architecture places two asynchronous serial data buses and modem-control functions on one device, reducing board space while supporting multiple serial links. The main verified features include USB 2.0 full-speed operation, USB transceiver integration, one internal oscillator, one-time programmable ROM, two UART buses, full modem-control signals, and five digital I/O pins. Royalty-free drivers are identified by the manufacturer product-page result, supporting a straightforward USB-to-serial implementation. The package is a 4 x 4 mm QFN-24, also described in the datasheet snippet as MLF or MLP terminology. The device is suited to legacy RS-232 migration, USB-to-dual-serial adapters, embedded debug and service interfaces, industrial equipment connectivity, and USB instrumentation. Compared with discrete USB interface implementations, the integrated transceiver, oscillator, ROM, dual UART channels, and modem controls reduce component count and simplify firmware-facing communication. The exposed-pad QFN-24 package requires careful PCB layout, adequate grounding, and thermal-via placement. USB differential routing should be kept short and impedance-controlled, while UART signals should be separated from noisy switching nodes. The one-time programmable ROM should be considered during product identification and manufacturing planning because programmable identity is not the same as freely rewritable storage. This page combines the verified manufacturer datasheet description, distributor listings, package information, and practical USB-to-UART design context. It does not infer electrical limits that were not supplied in the verified data; consult the official Silicon Labs datasheet before finalizing power, current, clock, and pin-level design details.

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