Flash Media Controller 48-Pin QFN EP

The SMSC USB2641 is a USB 2.0 compliant, Hi- Speed hub for USB port expansion with an attached mass storage class peripheral controller. The controller allows read/write capability to popular flash media from the following families: Secure DigitalTM (SD) MultiMediaCardTM (MMC) xD-Picture CardTM (xD)1 Memory Stick (MS) The USB2641 is a fully integrated, single chip solution providing USB expansion and integrated flash card media reader/writer capability of ultra high performance operation. Average sustained transfer rates exceeding 35 MB/s are possible2.

• Compliant with the following flash media card specifications: SD 2.0 / MMC 4.2 / MS 1.43 / MS-Pro 1.02 / MS-PRO-HG 1.01 / MS-Duo 1.10 / xD 1.2
• Supports a single external 3.3 V supply source; internal regulators provide 1.8 V internal core voltage for additional bill of materials and power savings
• The transaction translator (TT) in the hub supports operation of Full-Speed and Low-Speed peripherals
• 9 K RAM | 64 K on-chip ROM
• Enhanced EMI rejection and ESD protection performance
• Onboard 24 MHz crystal driver circuit
• Optional external 24 MHz clock input
• Up to 9 GPIOs for special functions
• 8051 8-bit microprocessor
• Hub and flash media reader/writer configuration from a single source: External I2C ROM or external SPI ROM
  • Configures internal code using an external I2C EEPROM
  • Supports external code using a SPI Flash EEPROM
  • Customizable vendor ID, product ID, language ID
• EEPROM update via USB
• 48-pin QFN lead-free, RoHS compliant package (7x7 mm)