ft8u232am Future Technology Devices International Ltd., ft8u232am Datasheet
ft8u232am
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ft8u232am Summary of contents
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... Note ** = Currently in development GENERAL DESCRIPTION The FT8U232AM is a cost-effective single chip USB UART ( U-UART ) solution for transferring serial data over USB. With data transfer rates 920k baud ( RS232 ) and 2,000 k baud ( RS422 / RS485 ) , the FT8U232AM significantly raises the performance level above that above that of traditional ISA and PCI based UART solutions whilst offering true plug and play and easy interfacing through it’ ...
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... Figure 1 – FT8U232AM Block Diagram ( Simplified ) VCC 3.3 Volt 3V3OUT LDO Regulator USBDP Serial Interface USB Engine Transceiver USBDM USB DPLL XTOUT 6MHZ x8 Clock Oscillator Multiplier XTIN RCCLK Figure 2 – FT8U232AM I.C. Pinout EESK EEDATA VCC RESET# TEST 3V3OUT USBDP USBDM Future Technology Devices Intl. ...
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... Dual Port TX Buffer ( 128 bytes ) Data from the USB data out endpoint is stored in the Dual Port TX buffer and removed from the buffer to the UART transmit register under control of the UART FIFO controller. Future Technology Devices Intl. FT8U232AM Preliminary Information Rev 0.8 – Subject to Change ...
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... EEPROM Interface Though the FT8U232AM will work without the optional EEPROM, an external 93C46 EEPROM can be used to customise the USB VID, PID, Serial Number and Strings of the FT8U232AM for OEM applications. The EEPROM is also required for applications where multiple FT8U232AM’s are connected to a single PC as the drivers rely on a unique serial number for each device to bind a unique virtual COM port to each individual device ...
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... Goes Low during USB Suspend Mode Device - +4.4 volt to +5.25 volt Power Supply Pins Device – Ground Supply Pins Device - Analog Power Supply for the internal x8 clock multiplier Device - Analog Ground Supply for the internal x8 clock multiplier FT8U232AM Preliminary Information Rev 0.8 – Subject to Change ...
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... Figure 3. FT8U232AM - PACKAGE DESCRIPTION – QFP 7mm x 7mm 32 Pin # +/- 1 0.05 Min 0.2 Min 0.15 Max Future Technology Devices Intl 0 0.25 0.6 +/- 0.15 FT8U232AM Preliminary Information Rev 0.8 – Subject to Change 7 9 0.37 +/- 0.07 0.09 Min 0.09 Min 0.16 Max 0.2 Max 0.35 +/- 0.05 All dimensions in millimetres ...
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... Max Units 4.4 5. 250 0.6 v 2.7 v 0.2 v 0.8 2.5 v 0.8 2.0 v 0.3v 2.8 FT8U232AM Preliminary Information Rev 0.8 – Subject to Change 150 -0.5v to +6.00v -0.5v to VCC + 0.5v -0.5v to VCC + 0.5v 24mA 24mA 500mW Conditions Normal Operation USB Suspend Voh = VCC – 0.5v Vol = + 0. 1. 15k to GND ...
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... Please visit our internet site for the latest contact details of our Agents and Sales Representatives world-wide. Future Technology Devices Intl. Disclaimer Telephone : + 141 353 2565 Fax : + 141 353 2656 Email : support@ftdi.co.uk Internet : http://www.ftdi.co.uk FT8U232AM Preliminary Information Rev 0.8 – Subject to Change ...
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Appendix A USB Device Descriptors ...
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USB Device Descriptors Note replaced by E2Rom Value modified by configuration option LABEL : Device_Des; 0010 12 Val : Device_Len;{length of this descriptor in bytes} 0011 01 Val : $01;{Device descriptor type} 0012 10 01 Val ...
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LABEL : Endpoint3_Des; {* end point descriptor *} 003B 07 Val : $07;{length of this descriptor in bytes} 003C 05 Val : $05;{End point descriptor} 003D 02 Val : 00000010b;{out endpoint at address 2} 003E 02 Val : 00000010b;{attribute as ...
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Appendix B EEPROM Data Structure ...
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E2Rom Data example 0000 00 00 Val : $00,$00;{Configuration value} 0002 03 04 Val : $03,$04;{Vendor ID FTDI} 0004 01 60 Val : $01,$60;{product number 6001} 0006 00 02 Val : $00,$02;{device release number} 0008 A0 Val : 10100000b; 0009 ...