Product Summary
The W86L388D is a SD/MMC host interface bridge used between host microprocessor and SD/MMC. The data width of host microprocessor can be 8-bit or 16-bit. The W86L388D can support synchronous or asynchronous type of host interface. It also supports DMA or Interrupt type of transfer mode to improve data transfer performance between host microprocessor and SD/MMC. The W86L388D is fit for most of IA devices, such as PDA, Cellular Phone, DSC, and MP3 player.
Parametrics
W86L388D absolute maximum ratings: (1)Supply Voltage with respect to VVSS VVDD: -0.3 to 6 V; (2)Current at any pin other than supplies: 0 to 10 mA; (3)Storage Temperature Tst: -65 to 150 ℃.
Features
W86L388D features: (1)Compliant with SD spec. Version 1.0; (2)Compliant with MMC spec. Version 2.2; (3)Support two types of host microprocessor interface access-synchronous and asynchronous mode; (4)DMA and Interrupt transfer mode supported; (5)Host microprocessor 8/16 bit data bus; (6)Built-in crystal driver circuit, support external oscillator or crystal clock; (7)Extra 5 programmable GPIO supported; (8)Wide range of clock input from 3.58MHz up to 25MHz; (9)3.3V opereation; (10)48-pin LQFP package.
Diagrams
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