RoHS compliant SOP-16, SOP-8, SSOP-20 and ESSOP-10, MSOP-10 lead-free package.ĬH340C, CH340N, CH340K, CH340E, CH340X and CH340B have integrated clock, no external crystal required.ĬH340B has integrated EEPROM used to configure serial number, some functions can be customized, etc.ĬH340K has 3 built-in diodes to reduce current flow backwards between the I/O pins of the MCU.CH340C/N/K/E/X/B have integrated clock, no external crystal required, CH340B also integrates EEPROM used to configure the serial number, etc.Supports 5V and 3.3V power supply voltages.Built-in firmware, software compatible with CH341, use VCP driver of CH341 directly. CH340R supports IrDA criterion SIR infrared communication, supports baud rate varies from 2400bps to 115200bps.through external voltage conversion chip. Provides further RS232, RS485, RS422 interface, etc.Supports common MODEM interface signals RTS, DTR, DCD, RI, DSR and CTS.Hardware full duplex UART interface, integrated transmit-receive buffer, supports communication baud rate varies from 50bps to 2Mbps.Original UART applications are totally compatible without any modification in Windows operating systems.
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