Espressif ESP-PROG JTAG Debugger Firmware Flash Programmer USB to UART FT2232HL Download Tool for ESP8266 ESP32 with 2.54mm 1.27mm Program JTAG Connectors

Board dimensions are approximately 73.4 x 25.1 mm. For software setup, install the FT2232HL driver, then use ESP-IDF with OpenOCD and GDB, or configure the tool directly in PlatformIO (debug_tool = esp-prog).

1. OFFICIAL ESPRESSIF TOOL Genuine ESP-PROG debug and download probe built on the FTDI FT2232HL USB 2.0 bridge; recognized by ESP-IDF, OpenOCD, GDB and PlatformIO out of the box
2. FLASHING AND DEBUGGING IN ONE BOARD 6-pin Program interface for automatic firmware download and serial console, plus 10-pin JTAG interface for breakpoints, single-step execution and real-time register/memory inspection
3. SINGLE USB CABLE, TWO PORTS One connection enumerates two ports on your PC: the higher-numbered port is the Program interface, the lower-numbered port is the JTAG interface
4. FLEXIBLE POWER OPTIONS Independent 3.3 V / 5 V power-select headers for both interfaces let you power the target board or run it from its own supply, with strong compatibility across user boards
5. TWO CONNECTOR PITCHES, FOOL-PROOF Both interfaces available in 2.54 mm and 1.27 mm pitch with reverse-current-protected IDC connectors; 1.27 mm and 2.54 mm cabling options cover modules, DevKits and custom PCBs
6. HANDS-FREE BOOT CONTROL On-board Boot and Reset buttons, an IO0 On/Off header to prevent your GPIO0 strapping pin from being disturbed, and red/green/blue status LEDs for power, TX and RX
7. Scope by function: automatic firmware download and serial communication work with ESP8266 and ESP32 platforms. JTAG online debugging is documented for the classic ESP32; Espressif's newer device-kit documentation also lists ESP32-S2, ESP32-S3 and ESP32-C3, but the JTAG pin mapping differs per chip please check the mapping for your exact target before ordering.
8. Signal level: the RX/TX and JTAG signal level is fixed at 3.3 V. If your target board runs 1.8 V logic, this probe is not suitable without external level shifting.
9. Not the same as ESP-PROG-2: this listing is the ESP-PROG unit with a Micro-B USB connector. ESP-PROG-2 is a different tool built around an ESP32-S3-MINI-1 module with a USB Type-C connector.
10. TCK trace length: keep the JTAG clock line short (under 15 cm) and use shielded or ribbon cabling for reliable debugging.
11. Included items: please refer to the product photos for the actual packing list. A data-capable USB 2.0 cable (A-to-Micro-B) is required; charge-only cables will not work.

SPECIFICATIONS

1. Interface: USB 2.0, Micro-B (USB cable sold separately / per actual packing list)
2. USB bridge controller: FTDI FT2232HL, dual channel, up to 3 Mbps
3. Program interface: 6-pin ESP_EN, VDD, ESP_TXD, GND, ESP_RXD, ESP_IO0
4. JTAG interface: 10-pin VDD, ESP_TMS, GND, ESP_TCK, GND, ESP_TDO, GND, ESP_TDI, GND, NC
5. Connector pitches: 2.54 mm (0.1") and 1.27 mm (0.05"), fool-proof IDC
6. Target power output: selectable 3.3 V or 5 V via pin header
7. Signal level: RX/TX and JTAG signals are fixed at 3.3 V
8. Controls: Boot button, Reset button, IO0 On/Off header, PROG/JTAG power-select headers
9. Status LEDs: red (3.3 V power on), green (data sent), blue (data received)
10. Board size: approx. 73.4 x 25.1 mm
11. Software: FT2232HL driver + ESP-IDF / OpenOCD / GDB / PlatformIO