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CH341A fiches techniques PDF

ETC - USB bus convert chip

Numéro de référence CH341A
Description USB bus convert chip
Fabricant ETC 
Logo ETC 





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CH341A fiche technique
The DataSheet of CH341 (the first)
1
USB bus convert chip CH341
English DataSheet
Version:2D
http://wch.cn
http://wch-ic.com
1. Introduction
CH341 is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with
2-wire or 4-wire through USB bus.
In UART mode, CH341 provides alternant rate control signals such as serial transfer enable, serial
receive in ready etc. It also supplies common MODEM communication signal in order to expand UART for
computer or upgrade common synchronous interface device to USB bus directly.
In printer port mode, CH341 supplies standard USB printer port which compounds USB relevant
protocol and Windows operate system used to upgrade ordinary parallel printer to USB bus directly.
In parallel mode, CH341 gives out 8-bit parallel in EPP or MEM mode. It can be used to input/output
data directly without MCU/DSP.
Besides, CH341A also supports some common synchronous serial such as 2-wire (SCL, SDA) and
4-wire (CS, SCK/CLK, MISO/SDI/DIN and MOSI/SDO/DOUT) interface.
Computer
and other
USB host
D+
D-
CH341
Convert chip
UART/RS232/RS485/RS422
Parallel printer to USB printer
EPP parallel and MEM parallel
Common 2-wire and 4-wire synchronous serial
2. Features
2.1.Introduction
Full speed USB device interface, conforms to USB Specification Version 2.0, only needs crystal and
capacitance external.
Optional: define Vender ID, production ID and list number through external low-cost serial EEPROM.
Supports 5V and 3.3V power source.
Low-cost, directly convert serial peripheral equipment, parallel printer and parallel peripheral
equipment.
SOP-28 and SSOP-20 package lead free, compatible with RoHS.
Only compatible with application layer because interfaces are diverted via USB.
Free Datasheet http://www.Datasheet4U.com

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