CH340E SOP8 USB to TTL Module Pro Mini Downloader – KSH 400 at HIMASTORES Mombasa – best electronics in Kenya
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CH340E SOP8 USB to TTL Module Pro Mini Downloader

SKU: HMJ740 Category: Microcontrollers
KSH 400.00
Out of Stock

Product Description

CH340E USB to TTL Module Pro Mini Downloader

Ultra-Compact USB to Serial Converter for Arduino and MCU Programming

This CH340Ebased USB to TTL converter module is a compact, highperformance serial communication adapter designed for programming Arduino Pro Mini, STM32, STC, and ESP8266 microcontrollers [citation:3][citation:13].

Builtin Crystal Oscillator Eliminates the need for external crystal, simplifying circuit design [citation:6][citation:12]
3.3V/5V Selectable Output - Compatible with both 3.3V and 5V logic systems [citation:2][citation:4]
Operating Voltage: 5VDC input via USB port; selectable 3.3V or 5V output [citation:13][citation:14]
Communication: Full-duplex UART with support for 50bps to 2Mbps baud rates [citation:6]
Ensure TXD connects to target RXD, and RXD connects to target TXD for proper communication [citation:3]

Technical Specifications

ParameterValue
ChipCH340E (SOP8/MSOP10 package)
USB InterfaceMicroUSB or TypeC (varies by module)
Logic Levels3.3V or 5V (selectable)
Data Rate50bps to 2Mbps [citation:6]
LED IndicatorsPWR, TXD, RXD [citation:2][citation:3]
Protection500mA polyfuse (self-resetting) [citation:3]
Dimensions~16 x 16mm

= Key Features =

+UltraCompact PCB Design Small footprint ideal for portable and field programming [citation:3]

+DTR Pin Included Supports Arduino Pro Mini autoreset for seamless code uploads [citation:3]

+LED Status Indicators - Visual feedback for power, transmit, and receive activity [citation:2][citation:3]

+Wide OS Compatibility - Supports Windows 98/ME/2000/XP/Vista/7/8/10, macOS, and Linux [citation:2][citation:4]

= Applications =

  1. Arduino Pro Mini program downloader
  2. STM32 and STC microcontroller programming
  3. Serial debugging and UART communication
  4. ESP8266 and ESP-01 module interfacing [citation:3]
  5. IoT device development
Ideal for Pro Mini Downloading - Includes DTR pin for automatic reset [citation:3]
Extremely Compact Perfect for portable and onthe-go programming

√ Type-C connector option for modern devices [citation:3][citation:14]

√ Pre-soldered pin headers for easy breadboard use

√ Replaces CH340G and CH340C with improved features [citation:12]

Troubleshooting

Driver not recognized:

  • Install CH340 driver manually for Windows (automatic for macOS/Linux) [citation:3]
  • For Win10, some versions may require driver rollback to 2014 version [citation:14]

No data transmission:

  • Verify TX/RX cross-connection (module TX to target RX, module RX to target TX) [citation:3]
  • Check for correct voltage selection (3.3V or 5V) [citation:2][citation:13]