Comparison page

ATGM336H vs CH340G

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

ATGM336H

Projects needing GPS and BeiDou with a commonly available communication part.

CH340G

Projects needing USB UART and Low cost with a commonly available communication part.

Specification Matrix

DimensionATGM336H CH340G

CategoryCommunicationCommunication

MakerZhongke MicroWCH

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoNeeds verification

Price$3.00 - $8.00$0.20 - $0.60

Known Tradeoffs

ATGM336H

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

CH340G

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

ATGM336H

Zhongke Micro

China-made GNSS module commonly used as a low-cost GPS receiver in maker projects.

China-madeCommunication74% confidence

CH340G

WCH

USB-to-UART bridge chip used on many low-cost Arduino-compatible and ESP development boards.

China-madeCommunication86% confidence