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FTDI UMFT4222EV开发模块是一个高速USB2.0到QuadSPI/ I2C桥紧凑的32引脚QFN封装的开发模块。FT4222H需要一个外部晶振(12MHz的)的内部PLL进行操作。它支持多IO电压,3.3V,2.5V或1.8V。它也提供了128字节的一次性可编程(OTP)存储器,用于存储特定于供应商的信息的空间。该FT4222H包含SPI/ I2C配置接口。SPI接口可配置为主模式,单,双或四位数据宽度传送或从模式单位数据宽度传输。I2C接口可配置为主机或从机模式。Features
- Single Hi-Speed USB 2.0 chip (FT4222H) to flexible and configurable SPI/I²C interfaces.
- SPI interface support for Single / Dual / Quad SPI Master Mode with configurable target operating speed.
- Up to 28Mbps data transfer rate in SPI mode with quad data mode.
- Support up to 4 slave selection control pins in SPI master mode.
- Support Single SPI Slave Mode with SCK operating frequency up to 20MHz.
- I²C interface support 7-bits address and fully compatible to v2.1 and v3 specification for I2C Master/Slave Mode with configurable target operating speed for 100kbit/S standard mode, 400kbit/S fast mode 1Mbit/S Fast mode plus and 3.4Mbit/S high speed mode.
- Configurable GPIOs controlled by application software via USB bus
- Fully support USB2.0 suspend/resume and remote wakeup
- Support Battery Charger Detection
- OTP memory inside for USB Vendor ID (VID), Product ID (PID), device serial number, product description string and various other vendor specific data.
- USB Power Configurations; bus-powered and self-powered.
- On board jumper for FT4222H configuration mode, USB power configuration and VCCIO source selection
- Integrated power-on-reset circuit.
- True 3.3V CMOS drive output and TTL input. (operates down to 1.8V with external 1.8V power input to VCCIO)
- Support wide supply voltage range.
- USB2.0 Low operating and suspend current; 68mA (active-typ.) and 375uA (suspend-typ.).
- Configurable I/O pin output drive strength: 4mA (min) and 16mA (max)
- UHCI / OHCI / EHCI / XHCI host controller compatible
- FTDI's royalty-free Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases
- Supplied PCB designed to fit a standard 20.2mm (0.8") wide 24 pin DIP socket. Pins are on a 2.54mm (0.1") pitch.
- On board USB Micro-B receptacle allows module to be connected to a PC.
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