1. GL823K
Chip Introduction

• GL823K is a USB 2.0 single-port card reader controller chip that supports SD/MMC/MSPRO flash memory cards.
• It supports USB2.0 high-speed transmission (480Mbps) and conforms to the Universal Serial Bus specification.
• Internal integrated high-speed 8051 microprocessor and efficient hardware engine for optimal data transfer performance between USB and flash card interfaces.
• Integrated 5V to 3.3V, 3.3V to 1.8V regulators and on-chip power MOSFETs for powering the flash card.
• Self-contained on-chip clock source (OCCS) function eliminates the need for an external 12MHz crystal input, effectively reducing total BOM cost.

Structure Diagram

Pin Description

Product Intro

Brand：GENESYS(Chuangwei)
Manufacturer Model:GL823K-HCY04
Item No.: C284879
Package: SSOP-16-150mil-0.635mm
Datasheet: 📂 Download File
Gross weight of commodity: 0.23 grams (g)
Package: Tube

2. Notes
Card holder option
It is recommended to choose the self-ejecting package type for the TF card holder option, when you need to insert or remove the card, just touch and press down the TF card, it will be automatically ejected.

Instructions 
When using the dual-slot version, you should note that only one can be selected for use, and only one can be displayed when inserting a TF card and SD card at the same time.

Verification
Assembly 

Product Image

Transmission Rate