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Small green circuit board with USB-A plug and six-pin header plus loose jumper wires

SXDOOL

SXDOOL CP2102 USB 2.0 to TTL Serial Converter with Jumper Wires

SKU CH-B5YA-7VHHC

USB 2.0 to TTL serial converter with CP2102 chipset, 300 bps to 1.5 Mbps baud rates, 6-pin header for 3.3 V, 5 V, TXD, RXD, RST and GND, plus jumper wires included

  • CP2102 chipset provides stable serial communication
  • Baud rates from 300 bps to 1.5 Mbps
  • USB 2.0 full-speed 12 Mbps compliant interface
  • 6-pin TTL header with 3.3 V, 5 V, TXD, RXD, RST, GND
  • Works with Windows 98SE through Windows 7, Mac OS 9, Mac OS X and Linux 2.40

USB 2.0 TTL serial converter

The CP2102 module bridges a standard USB 2.0 type A male port to a 6-pin TTL header providing 3.3 V, RST, TXD, RXD, GND and 5 V. It targets developers and hobbyists who need to program or debug microcontrollers, routers or embedded boards directly from a laptop or desktop. Jumper wires are included for quick breadboard connections.

USB 2.0 full-speed interface limits

The link runs at USB 2.0 full-speed 12 Mbps while the UART supports baud rates from 300 bps to 1.5 Mbps with a 640 byte transmit buffer. Hardware or X-On/X-Off handshaking is available and the chip operates from -40 to +85 °C. Legacy operating systems down to Windows 98 SE and Mac OS 9 are supported alongside Linux 2.40.

Replaces bare CP2102 breakout boards

Builders who previously wired a raw chip on perfboard gain a rugged USB plug, labelled pins and supplied jumper wires in one assembly. The jump is worth it when you want reliable enumeration across Windows, macOS and Linux without soldering a custom PCB or hunting for separate cables.

Highlights

  • CP2102 chipset provides stable serial communication
  • Baud rates from 300 bps to 1.5 Mbps
  • USB 2.0 full-speed 12 Mbps compliant interface
  • 6-pin TTL header with 3.3 V, 5 V, TXD, RXD, RST, GND
  • Works with Windows 98SE through Windows 7, Mac OS 9, Mac OS X and Linux 2.40

Specifications

No published specifications for this item yet.

Questions about this item

Which pin count should I pick — the 5-pin or the 6-pin header?

The board provides a 6-pin TTL connector carrying 3.3V, RST, TXD, RXD, GND and 5V; use the pins your target MCU requires.

What does the 1.5 Mbps baud-rate ceiling mean when I am flashing firmware?

It is the maximum asynchronous serial speed the CP2102 can sustain; most MCU bootloaders run well below that, so the limit rarely bottlenecks flashing.

The module uses USB 2.0 full-speed — what throughput does that actually give me?

USB 2.0 full-speed caps the bus at 12 Mbps, but the UART itself tops out at 1.5 Mbps, so the serial link is the real bottleneck.

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