供应GL835-QFN24读卡芯片

GL835 电子元器件 GENESYS/创惟科技 封装QFN24 批次22+

GL835 is a crystal-less USB 2.0 to Single LUN SD3.0 (UHS-I/SDR-50)/MMC Memory Card Reader controller.
It supports USB_ 2.0 high-speed transmission to Secure Digita1M (SD), SDHC, miniSD, microSD (T-Flash),
MultiMediaCard
yTM
(MMC), RS-MMC, MMCmicro and MMCmobile on one chip. It also supports huge density
memory cards (up to 2TB), such as SDXC and Memory Stick XC. As a single chip solution for USB 2.0 flash
card reader, the GL835 complies with Universal Serial Bus specification rev. 2.0, USB Storage Class
specification ver. 1.0, and SD/MMC card interface specification.
The GL835 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 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.

CHAPTER 2 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)/ Buk Write (2)
Integrated USB building blocks
USB2.0 transceiver macro (PHY), USB controller, Build in power-on reset (POR)
Embedded 8051 micro-controller
Embedded mask ROM and internal SR AM
Secure Digita1M (SD)
Support SD specification v1.0/1.1 / v2.0/ SDHC (Up to 32GB)
Support SD specification v3.0 UHS-I: SDR25/SDR50
Support 1.8V/3.3V switch signal pads
Support SDXC (Up to 2TB)
※Optional: MultiMediaCardM (MMC)
Support MMC specification v3.x/ v4.0/4.1 /4.2.
x1 / x4 bit data bus
   On chip clock source (OCCS) to eliminate the use of one 12MHz crystal from board
Support 3.3V power input
   On-Chip 3.3V to 1 8V regulators
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 driver for better power management.
   Support Spread Spectrum Clock enabled by vendor driver for SD to reduce EMI effect
Support Remote Wakeup by default
Support SD CPRM
Support Intel Power Optimizer
Support Microsoft InstantGo
Support RTD3
Package available in 24 pin QFN (4x4 mm)