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| CH341 USB CH341 2 http://wch.cn 1 CH341 USB USB 2 4 CH341 MODEM USB CH341 USB Windows USB USB CH341 EPP MEM BUS 8 /DSP/MCU CH341A 2 SCL SDA 4 CS CLK DIN DOUT /RS232/RS485/RS422 USB D+ DCH341 USB EPP /MEM /BUS 2 4 2 2.1. USB V2.0 EEPROM ID ID 5V 3.3V SOP-28 SSOP-20 USB 2.2. USB Windows 50bps2Mbps MODEM RS232RS485RS422 CH341 2.3. USB USB Windows Windows 2000 XP 2.4. EPP MEM BUS EPP AS#DS#WR# EPP V1.7 EPP V1.9 MEM A0RD#WR# BUS ALERD#WR# MEM 2.5. FlexWire 2 5 Host/Master 2 4 2 SCL SDA 4 TM 3 SOP-28 SSOP-20 7.62mm 300mil 5.30mm 209mil 1.27mm 50mil 0.65mm 25mil 28 20 CH341S/A CH341T 4 4.1. CH341 CH341 CH341T SSOP-20 CH341A CH341T VCC VCC GND GND SOP-28 CH341S CH341A CH341T 4.2. 28 12 9 13 14 10 11 1 2 24 23 VCC GND V3 XI XO UD+ UDACT# RSTI SCL SDA 0.1uF USB 3.3V VCC 5V 0.01uF USB D+ USB D- USB EEPROM SCL EEPROM SDA 4.3. 5 6 27 25 26 4 15 16 17 18 20 21 19 7 8 3 22 TXD RXD TEN# RDY# TNOW ROV# CTS# DSR# RI# DCD# DTR# RTS# OUT# INT# IN3 IN7 NC. MODEM MODEM MODEM MODEM MODEM MODEM 4.4. 2215 D7D0 8 DATA7DATA0 CH341 25 4 26 3 5 8 6 7 27 STB# AFD# INI# SIN# ERR# SLCT PEMP ACK# BUSY STROBE AUTO-FEED INIT SELECT-IN ERROR FAULT SELECT SLCT PEMPTY PERROR ACK BUSY 4.5. 2215 25 4 26 3 27 7 5 8 6 D7D0 WR# DS# RST# AS# WAIT# NC. INT# ERR# SLCT PEMP 8 EPP MEM/BUS WR# EPP MEM/BUS RD# EPP MEM ADDR A0 BUS ALE CH341A CH341S 4.6. CH341A CH341T 22 21 20 19 18 17 16 15 24 23 26 7 586 DIN DIN2 DOUT DOUT2 DCK CS2 CS1 CS0 SCL SDA RST# INT# 4 / 5 2 4 5 2 4 /5 4 2# 4 1# 4 0# 2 2 CH341 5 5.1. B H CH341 USB USB 5.2. CH341 CH341 2K5K AS# 3K CH341 ACT# USB USB USB ACT# LED USB CH341 USB UD+ UD- USB CH341 RSTI RSTI CH341 RSTI CH341 20mS RSTI VCC 0.47uF CH341 XI 12MHz CH341 XI XO 12MHz XI XO CH341 5V 3.3V 5V CH341 VCC 5V V3 0.01uF 3.3V CH341 V3 VCC 3.3V CH341 3.3V 5.3. CH341 SCL SDA SCL SDA CH341 ID ID ID SCL SDA SDA SCL SDA SCL SDA SCL USB USB EPP/MEM/BUS USB ID 5523H 5512H 5584H SCL SDA EEPROM EEPROM ID ID 7 24CXX 24C01A24C0224C04 USB Windows EEPROM CH341 CH341 CH341 SCL SDA SCL SDA SCL SDA 2 CH341 ACT# 2K CH341 EPP/MEM/BUS EEPROM 00H SIG 53H 23H 12H FEH FAH 00H 4348H 55??H 0100H 12345678 00H00H 00H FFH 1 1 1 1 1 1 1 1 0 53H 23H=12H= 01H MODE CH341A CH341T 02H CFG CH341S 03H 00H 0FFH 05H04H VID Vendor ID 07H06H PID Product ID 09H08H RID Release ID 17H10H SN Serial Number 8 DID IEEE-1284 ID 7FH20H PIDS CH341A CH341T CFG 7 6 5 4 3 2 1 0 PRT PWR SN-S DID-S PID-S SPD SUSP PROT 1 0= USB 1= USB 0= USB1= USB 0=1= ID 0=1= 0=1= 0=1=/ USB 0=1= USB 0 3 0 USB 1 2 2 5.4. CH341 MODEM TXD RXD TXD RXD TEN# RDY#TEN#CH341 TEN#RDY# CH341 USB TNOW ROV#TNOW CH341 TNOW ROV# CH341 ROV# MODEM CTS#DSR#RI#DCD#DTR#RTS# CH341 MODEM CH341 INT#OUT#IN3 IN7 INT# OUT# MODEM CH341 1 9 2 5 1 /// CH341 5075100110134.5150300600900120018002400 3600480096001440019200288003360038400560005760076800115200128000 15360023040046080092160015000002000000 0.3 2 Windows CH341 CH341 CH341 EEPROM CH341 USB RS232RS485RS422 5.5. CH341 Centronic CH341 USB USB Windows Windows 2000 XP Windows CH341 USB EEPROM USB PROT=1 PROT=2 CH341 CH341 CH341 ACK# BUSY STB# 1uS 370KB/SCH341 ACK# STB# 0.5uS 660KB/S CH341 USB 6 6.1. TA TS VCC VIO VCC GND -20 -55 -0.5 -0.5 70 125 6.5 VCC+0.5 V V 6.2. TA=25VCC=5V USB 3.3V 40 VCC ICC V3 VCC V3 VCC 4.7 3.2 5 3.3 15 5.3 3.6 30 V V mA CH341 ISLP VIL VIH VOL VOH IUPs IUP IDN VR USB 4mA 4mA 100uA SCL SDA 0.5 -0.5 2.0 VCC-0.5 100 40 2.3 200 80 -50 2.6 500 160 2.9 0.7 VCC+0.5 0.5 mA V V V V uA uA uA V 6.3. TA=25VCC=5V VCC=V3=3.3V FCLK TPR TRI TRD XI 11.98 100 30 12.00 20 12.02 30 MHz mS nS mS 6.4. TA=25VCC=5V VCC=V3=3.3V TWPRT TSPRT TDS TDH TBZ TWA TAK STB# STB# STB# STB# BUSY STB# ACK# ACK# STB# 950 450 1500 950 450 450 250 100 400 1000 500 10000 10000 nS nS nS nS nS nS nS nS nS 10000 10000 7 7.1. P3 USB USB 5V +5V CH341 D+D-USB 500mA CH341 USB USB 5V USB CH341 USB 1 USB 5V USB 5V C13 C14 C13 0.01F CH341 C14 0.1F X3 C11 C12 X3 12MHz C11 C12 15pF USB USB VCC GND C15 CH341 RSTI VCC 0.47F C26 PCB C13 C14 CH341 D+ D- XI XO L1 R1 EEPROM U3 U3 SCL SDA 7.2. SDA SCL CH341 USB USB Centronic 2040 CH341 7.3. USB SDA SCL CH341 MC1488/MC1489MAX232/ICL232 MAX213/ADM213/SP213 RS232C TEN# CH341 7.4. USB RS485 TEN# CH341 TNOW RS485 U5 7.5. RDY# TEN# CH341 |
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