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The GL827L is USB 2.0 SD/MMC/MS Flash Card Reader single chip. It supports USB 2.0 high-speed transmission to Secure DigitalTM (SD), SDHC, Mini SDTM, Micro SDTM , T-Flash , MultiMediaCardTM(MMC), RS MultiMediaCardTM (RS MMC), MMC Micro , HS-MMC, MMC-Mobile , Memory StickTM (MS), Memory Stick DuoTM (MS Duo), High Speed Memory StickTM (HS MS), Memory Stick PROTM (MS PRO), Memory Stick PROTM Duo (MS PRO Duo), Memory Stick PRO-HG (MS PRO-HG), Memory Stick ROM, MS PRO Micro (M2) on one chip. As a single chip solution for USB 2.0 flash card reader, the GL827L complies with Universal Serial Bus specification rev. 2.0, USB Storage Class specification ver.1.0, and each flash card interface specification.

The GL827L integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between USB and flash card interfaces. Its’ pin assignment design fits to card sockets to provide easier PCB layout. 

The GL827L is packaged with 28-pin SSOP (150mil) and 24-pin QFN for up to 1 LUN (SD/MMC, MS).

USB specification compliance
- Comply with 480Mbps Universal Serial Bus specification rev. 2.0
- Comply with USB Storage Class specification rev. 1.0
- Support 1 device address and up to 4 endpoints: Control (0)/ Bulk Read (1)/ Bulk Write (2)/Interrupt (3)
Integrated USB building blocks
- USB2.0 transceiver macro (UTM), Serial Interface Engine (SIE), Build-in power-on reset (POR) and
low-voltage detector (LVD)
Embedded 8051 micro-controller
- Operate @ 60 MHz clock, 12 clocks per instruction cycle
- Embedded 32K Byte mask ROM and internal 256 byte SRAM
- Embedded 2K Byte external SRAM
Secure DigitalTM and MultiMediaCardTM
- Supports SD specification v1.0 / v1.1 / v2.0
- Supports MMC specification v3.X / v4.0 / v4.1 / v4.2
- x1 / x4 / x8 data transmission. (For QFN24 up to x4)
- Automatic CRC7 generation for command and CRC7 verification for response on CMD
- Support automatic CRC16 generation and verification on DAT0:7
- In addition to full packet transaction, optional single byte / bit operation on both CMD and DAT line /
- Process data in block or byte
Memory StickTM / Memory Stick PROTM / Memory Stick PRO DuoTM / Memory Stick PRO-HG/ Memory
Stick Micro
- Comply with Memory Stick specification: MS 1.43, MSPRO 1.02, MSPRO-HG 1.01 with 4-bit data
- Support INS signal
- Support automatic CRC16 generation and verification
On board 12 MHz Crystal driver circuit or 12 MHz Clock input
On-Chip 5V to 3.3V regulator. No external regulator required
On-Chip power MOSFETs for supplying flash media card power
Available in 28-pin SSOP (150mil) package
Available in 24-pin QFN package

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