GL823A-08 电子元器件 GENESYS/创惟科技 封装QFN-24AUSB 2.0 SD/MMC读卡器单芯片

　　DESCRIPTION

　　The GL823 is a USB 2.0 SD/MMC Flash Card Reader single chip. It supports USB 2.0 high-speed transmission

　　to Secure DigitalTM (SD), SDHC, SDXC, miniSD, microSD (T-Flash), MultiMediaCardTM (MMC), RS-MMC,

　　MMCmicro, MMCmobile on one chip. As a single chip solution for USB 2.0 flash card reader, the GL823

　　complies with Universal Serial Bus specification rev. 2.0, USB Storage Class specification ver.1.0, and

　　SD/MMC card interface specification.

　　The GL823 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. Inside the chip, it integrates 5V to 3.3V and 3.3V to 1.8V regulators and power

　　MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL

　　is needed and that effectively reduces the total BOM cost.

　　FEATURES

　　USB specification compliance

　　- Comply with 480Mbps Universal Serial Bus specification rev. 2.0

　　- Comply with USB Storage Class specification rev. 1.0

　　- Support one device address and up to four 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 mask ROM and internal SRAM

　　
Secure Digital

　　TM

　　(SD) and MultiMediaCard

　　TM (MMC)

　　- Support SD specification v1.0 / v1.1 / v2.0/ SDHC (Up to 32GB)

　　- Compatible with SDXC (Up to 2TB)

　　- Support MMC specification v3.x / v4.0 / v4.1 / v4.2.

　　- x1 / x4 bit data bus

　　On chip clock source and no need of 12MHz Crystal Clock input.

　　On-Chip 5V to 3.3V and 3.3V to 1.8V regulators

　　Support 5V to 3.3V Band Gap Regulator for stable voltage supply

　　Provide Over-Current protection mechanism for safety power supply

　　On-Chip power MOSFETs for supplying flash media card power

　　Support Power Saving mode/ Selective suspend mode for better power management.

　　Only available in QFN-24(A) package.

　　Support external serial EEPROM interface for the flexibility to load the vendor information and system

　　options

　　Operating system supported: Windows 7/Vista32&64/XP/2000/Me/98/98SE, Mac OS 9.X/10.X, Linux

　　Kernel 2.4.X/2.6.X

　　- Pass Windows Vista/ Windows 7 (Submission ID: 1355289)

　　USB-IF Logo (Submission TID: 40000940)

　　Package available in 24 pin SSOP (209 mil) and 24 pin QFN (4x4 mm)