flash-download-tool-dat

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• esptool-dat

ESP8266

SPI Speed

• 40 Mhz
• 80 Mhz
  

SPI Mode

• QIO (Quad I/O): Uses 4 data lines for input/output, allowing faster data transfer between the microcontroller and flash memory.
• DIO (Dual I/O): Uses 2 data lines for input/output, offering a balance between speed and compatibility.
• DOUT (Dual Output): Uses 2 data lines but only for output (reading from flash), typically slower than DIO and QIO.

Model	SPI Speed	SPI Mode	Speed
ESP-12F	40MHz	QIO	1 500 000

NWI1139

SPI = 40Mhz, SPI Mode = DOUT, speed up to ~1.5M (1 500 000, for CH340)

• NWI1139-dat

NWI1126

• NWI1126-dat - ESP32-C3-dat

ESP32-C3 Factory Mode

• Chip = ESP32-C3
• Mode = Factory
• LoadMode = UART

setup

• Flash Frequency: 40M or 80M
• SPI Mode: QIO or DIO

wiring with USB-TTL cable

• Red = 5V+ Power Supply = pin1 = +5V or VCC
• Green - TXD
• White - RXD
• GND - Ground

Upload

ESP32-C3

• flash speed 80M
• flash mode DIO

Common Error

5-chip efuse check fail

download to mulitple addresses

ref

• ESP8266-dat