The CP2101 is a highly integrated USB‑to‑UART bridge from Cygnal, offering a 28‑pin MP package with on‑chip EEPROM, voltage regulator and full‑speed USB…
The CP2101 USB‑to‑UART bridge integrates a full‑speed USB 2.0 controller, UART transceiver, on‑chip 512‑byte EEPROM and a 3.3 V regulator in a compact 28‑pin MP28 package. It requires no external resistors or oscillators, simplifying board design.
Key features include a supply voltage of 3.0‑3.6 V, operating temperature from –40 °C to +85 °C, data rates up to 921.6 kbps, and hardware flow‑control options. Pin definitions cover power, reset, UART I/O and USB signals, while the internal regulator provides 3.3 V to external circuitry. This manual is written in Chinese.
| Supply voltage (VDD) | 3.0 V – 3.6 V |
|---|---|
| Operating temperature range | -40 °C to +85 °C |
| EEPROM size | 512 bytes |
| Maximum data rate | 921.6 kbps |
| USB speed | Full‑speed (12 Mbps) |
| Package pin count | 28 pins (MP28) |
| Voltage regulator output | 3.3 V |
The device operates from 3.0 V to 3.6 V supply voltage.
It includes a 512‑byte on‑chip EEPROM for storing vendor codes and configuration data.
The bridge supports baud rates up to 921.6 kbps.
The VCD pin outputs a regulated 3.3 V that can be used to power external devices.