USB 8-Bit SPI
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.5
Document No.: FT_000630 Clearance No.: FTDI# 263
Future Technology ...
Description
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.5
Document No.: FT_000630 Clearance No.: FTDI# 263
Future Technology Devices International Ltd. FT221X
(USB 8-Bit FT1248 IC)
The FT221X is a USB to FTDI’s proprietary FT1248 interface with the following advanced
features:
Single chip USB to 1, 2, 4, or 8 bit wide
synchronous interface.
.
Entire USB protocol handled on the chip. No USB specific firmware programming required.
Fully integrated 2048 byte multi-timeprogrammable (MTP) memory, storing device
descriptors and CBUS I/O configuration.
Fully integrated clock generation with no external crystal required plus optional clock output selection enabling a glue-less interface to external MCU or FPGA.
Data transfer rates to 1MByte/s.
512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to
allow for high data throughput.
FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the
requirement for USB driver development in most cases.
Configurable CBUS I/O pin.
USB Battery Charger Detection. Allows for USB peripheral devices to detect the presence of a higher power source to enable improved charging.
Device supplied pre-programmed with unique USB serial number.
USB Power Configurations; supports buspowered, self-powered and bus-powered with power switching.
Integrated +3.3V level converter for USB I/O.
True 3.3V CMOS drive output and TTL input; operate...
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