Development and debugging board provides automatic firmware downloading, serial communication and JTAG online debugging for Espressif platforms. The board connects to a host computer through a Micro USB port and exposes separate Program and JTAG interfaces. Selectable 5 V or 3.3 V power output is available through pin headers, while RX/TX and JTAG signals operate at 3.3 V logic level. A single FT2232HL USB bridge provides up to 3 Mbps transfer rate, and red, green and blue LEDs indicate power and data activity.
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| Tool functions | Automatic firmware downloading, serial communication, JTAG online debugging |
| Host interface | Micro USB |
| USB bridge controller | FT2232HL |
| Transfer rate | Up to 3Mbps |
| Program interface pitch | 1.27 and 2.54mm |
| Program interface pins | 6pins |
| JTAG interface pitch | 1.27 and 2.54mm |
| JTAG interface pins | 10pins |
| Selectable output voltage | 3.3 or 5V |
| Signal logic level | 3.3V |
| Power supply options | USB port, 5 V/G pins, or 3.3 V/G pins |
| Firmware download and serial targets | ESP8266, ESP32, ESP32-S2, ESP32-S3, ESP32-C3 |
| JTAG debugging targets | ESP32, ESP32-S2, ESP32-S3, ESP32-C3 |
| LED indicators | Red power, green downloading, blue receiving |
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