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Specifications
- SD cards file access speed: 4000Kb/sec
- USB file access speed (with ULPI HS PHY): 4000Kb/sec
- USB FS file access speed: 900Kb/sec
- Single 3.3V supply
- Operating temperature:
-40 to 85ºC
Adding FAT file system to products requires a lot of resources from the system and needs intensive development efforts. This also requires USB Host drivers and SD memory drivers to be able to access storage medias such as SD cards or USB Mass Storage devices. Additionally, licensing patented technologies, such as LFN, is a lengthy and expensive process. Thanks to the GHI Electronics ALFAT SoC Processor, any simple system can now access files on SD cards and USB memory drives in a very short time, with minimal resources through simple UART, SPI, or I2C interface. The Host MCU controls ALFAT through simple commands sent through UART (serial), SPI or I2C. The commands give the host MCU the ability to access files on the storage media. With ALFAT, the file access rate can reach 4000Kb/sec. An important advantage of ALFAT is that supports Long File Name LFN and it is licensed by Microsoft for commercial use. Solutions that depends on ALFAT can use LFN commercially without the need for any additional licensing.
Features
- Built-in 2-port USB Host controller
- FAT16 and FAT32 file system
- LFN (Long File Name), fully licensed by Microsoft
- User/machine friendly access through UART, SPI, or I2C
- No limits on media size, file size, or file/folder count
- Programmable UART baud-rate
- Up to 8 simultaneous file access
- SD/SDHC card support, no 2GB limit; GHI Electronics is an SD association member
- MMC support
- 2x USB 2.0 ports, FS 12mbps on both; No need for external USB
host controllers
- One USB port is capable of HS 480Mbps through external ULPI PHY
- High speed 4-bit SD card interface
- Low power consumption
- Simple LQFP64 package
- RoHS compliant/Lead free
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