*USB To 4 Way TTL Module CH9344 12Mbps Baud Rate UART Serial Port Module UART Tr
Feature: \n 1. POWER ON RESET CIRCUIT: The CH9344 chip has built in power on reset circuit, which requires an external 30MHz clock signal to be provided to the x1 pin during normal operation.\n2. CLOCK SIGNAL GENERATION: The clock signal can be generated through crystal stabilized oscillation through built in inverter of this module. The circuit requires a 30MHz crystal to be connected between pins x1 and X0, with X1 and x0 pins grounded to 20pF oscillating capacitor.\n3. COMPLETE CIRCUIT: CH9344 chip has built in all circuits required by USB bus, including embedded USB2.0 controller and USB PHY, serial matching resistance of USB signal line, 1.5K pull up resistor required by device, etc.\n4. PC CONNECTION: UD + and UD \u2011 pins can be directly connected to PC or other USB host. If the resistance or inductance or ESD protection device is connected in series for chip safety, the AC DC equivalent series resistance should be within 5\u00B0.\n5. POWER SUPPLY: The CH9344 chip and USB p:
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