Lattice iCE40 Ultra系列FPGA开发方案

Lattice公司的iCE40 Ultra系列是超低功耗FPGA和传感器管理器件,采用先进的40nm超低功耗工艺,集成了能和所有移动传感器和应用处理器接口的SPI和I2C区块,还集成了10kHz(LFOSC)和48MHz(HFOSC)的片上振荡器,待机电流低至71uA,主要用于智能手机,平板电脑,手持通信设备厂,多传感器管理应用,传感器预处理和传感器融合以及常开传感器应用.本文介绍了iCE40 Ultra系列FPGA主要特性, iCE5LP-4K器件框图和DSP框图, iCE40 Ultra系列FPGA分接板主要特性和框图,电路图和材料清单.
 
iCE40 Ultra family is an ultra-low power FPGA and sensor manager designed for ultra-low power mobile applications, such as smartphones, tablets and hand-held devices. The iCE40 Ultra family includes integrated SPI and I2C blocks to interface with virtually all mobile sensors and application processors. The iCE40 Ultra family also features two on-chip oscillators, 10 kHz and 48 MHz. The LFOSC (10 kHz) is ideal for low power function in always-on applications , while HFOSC (48 MHz) can be used for awaken activities.
The iCE40 Ultra family also features DSP functional block to off-load Application Processor to pre-process informa-tion sent from the mobile sensors. The embedded RGB PWM IP, with the three 24 mA constant current RGB out-puts on the iCE40 Ultra provides all the necessary logic to directly drive the service LED, without the need of external MOSFET or buffer. The 500 mA constant current IR driver output provides a direct interface to external LED for application such as IrDA functions. Users simply implement the modulation logic that meets his needs, and connect the IR driver directly to the LED, without the need of external MOSFET or buffer. This high current driver can also be used as Barcode Emulation, sending barcode information to external Barcode Reader.
The iCE40 Ultra family of devices are targeting for mobile applications to perform functions such as IrDA, Service LED, Barcode Emulation, GPIO Expander, SDIO Level Shift, and other custom functions. The iCE40 Ultra family features three device densities, f...