FT122中文资料FT122 USB full-speed Device Controller with 8-bit Parallel Interface数据手册FTDI规格书

描述 Description

Note that this product is now obsolete and isnot recommended for new designs. The FT122 provides a cost and feature optimized USB full-speed device controller. The design builds on the FT120, by adding battery charger detection and internal clocking to reduce the PCB space required to complete the design. Communicating with a micro-controller over the generic parallel interface the device will appear as another memory device on the processor bus, offering USB connectivity with bulk, isochronous or interrupt endpoints.

特性 Features

·USB 2.0 Full Speed compatible
·Support for multiple interrupt modes tofacilitate bulk and isochronous transfers
·Fully autonomous DMA engines for fast datatransfer
·Supports high-speed parallel interface to external microcontroller
·Separate address/data or multiplexed address/data bus
·Integrated 2kbytes of configurableendpoint buffer
·Doublebuffer scheme for main endpoint improves data transfer rates.
·Dedicated clock output pin with programmable clock frequency (4 – 48 MHz)
·Good USB connection indicator that blinks with USB transmitand receive activities
·Internal clocking:- no external crystal required
·Battery Charger Detection
·Single power supply operation at 3.3V or 5V
·Internal 1.8Vand 3.3V LDO regulators
·Extendedoperating temperature range : -40°C to 85°C
·Available inPb-free TSSOP-28 and QFN-28 packages (RoHS compliant)

应用 Application

·Provide USB port to Microcontrollers
·Provide USB port to FPGAs
·USB Industrial Control
·Utilising USB to add system modularity
·Replacement for difficult to source (in volume) PDIUSBD12