The USB2227 is a 4th generation USB 2.0 Flash Card Media that provides the interface between a USB Host Controller and Flash Media Cards. It is identical to the USB2228 without the support for xD-Picture Card™.

The USB2227 provides a single chip solution for the most popular flash memory cards in the market.

The device consists of a USB 2.0 device PHY and SIE, buffers, Fast 8051 microprocessor with expanded scratchpad, and program SRAM, and CF, MS, SM and SD controllers. The device can support up to 4 slot operation.

Provision for external Flash Memory up to 64K bytes for program storage is provided.

The USB2227 is identical to the USB2228 without the support for xD-Picture Card.

Device Includes

• USB 2.0 HS/FS Transceiver
• Three short circuit protected card power FETs targeted for use with the Secure Digital/MultimediaCard, Memory Stick and Smart Media slots
• A Bi-directional Control and a Bi-directional Bulk Endpoint are provided
• Internal or External Program Memory Interfaces
• 64K Byte Internal ROM Code Space or Optional 64K Byte External Code Space using Flash, SRAM or EPROM memory
• 15 GPIOs for special function use: LED indicators, button inputs, power control to memory devices, etc.
• Inputs capable of generating interrupts with either edge sensitivity
• Compatible with Microsoft Windows, Apple OS, Softconnex and Linux Multi-LUN Mass Storage Class Drivers
• Multi-LUN Mass Storage Class Drivers available from Microchip
• 128 Pin VTQFP RoHS Compliant Package (1.0mm height, 14mm x14mm footprint)

Benefits:

• Customers benefit from the high quality on chip ROM code that is compatibility and compliance tested for the latest format support.
• Card compatibility testing across manufacturers ensures good end customer experience and obsoletes the need for flash program memory except for systems with custom features.
• Mask ROM operation enables lowest cost for embedded Flash Card Reader Applications.
• Integrated card power FETs decrease BOM cost and increase reliability.
• Firmware and hardware low power features enable USB bus powered applications and portable applications by configuration from EEPROM.
• Flexible program memory and configuration options provide the greatest flexibility for adding features or enabling upgrade of features in the field via USB bus.
• New levels of integration with on chip short circuit protected card power MOSFETS to reduce BOM costs to the minimum.
• Strong Flash Media Read/Write performance enables the benefits of USB 2.0 transfer speeds to be realized by end customers.
• Robust silicon design enables two layer board design for 4 slot card readers.

Customer Profile:

• Customers who want to add flash media card reader slots to their product.
• Customers that have USB Host ports available to connect to the card reader IC.

*Note: In order to develop, make, use, or sell readers and/or other products using or incorporating any of the Microchip devices made the subject of this document or to use related Microchip software programs, technical information and licenses under patent and other intellectual property rights from or through various persons or entities, including without limitation media standard companies, forums, and associations, and other patent holders may be required. These media standard companies, forums, and associations include without limitation the following: Sony Corporation (Memory Stick, Memory Stick Pro); SD3 LLC (Secure Digital); MultiMedia Card Association (MultiMediaCard); the SSFDC Forum (SmartMedia); the Compact Flash Association (Compact Flash); and Fuji Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation (xD-Picture Card). Microchip does not make such licenses or technical information available; does not promise or represent that any such licenses or technical information will actually be obtainable from or through the various persons or entities (including the media standard companies, forums, and associations), or with respect to the terms under which they may be made available; and is not responsible for the accuracy or sufficiency of, or otherwise with respect to, any such technical information.

Microchip's obligations (if any) under the Terms of Sale Agreement, or any other agreement with any customer, or otherwise, with respect to infringement, including without limitation any obligations to defend or settle claims, to reimburse for costs, or to pay damages, shall not apply to any of the devices made the subject of this document or any software programs related to any of such devices, or to any combinations involving any of them, with respect to infringement or claimed infringement of any existing or future patents related to solid state disk or other flash memory technology or applications ("Solid State Disk Patents"). By making any purchase of any of the devices made the subject of this document, the customer represents, warrants, and agrees that it has obtained all necessary licenses under then-existing Solid State Disk Patents for the manufacture, use and sale of solid state disk and other flash memory products and that the customer will timely obtain at no cost or expense to Microchip all necessary licenses under Solid State Disk Patents; that the manufacture and testing by or for Microchip of the units of any of the devices made the subject of this document which may be sold to the customer, and any sale by Microchip of such units to the customer, are valid exercises of the customer's rights and licenses under such Solid State Disk Patents; that Microchip shall have no obligation for royalties or otherwise under any Solid State Disk Patents by reason of any such manufacture, use, or sale of such units; and that Microchip shall have no obligation for any costs or expenses related to the customer's obtaining or having obtained rights or licenses under any Solid State Disk Patents.

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