Overview: The DataSheet of CH376 (the first) 1 File manage and control chip CH376
English DataSheet Version: 1 http://wch.cn http://wch-ic. 1. Introduction
CH376 is used as file manage control chip, used to MCU system read/write file in USB Flash Drive or SD card. CH376 supports USB-Device Mode and USB-HOST Mode. Set the basic firmware of USB munication protocol in the inner. It is also set firmware of special munication protocol to deal with Mass-Storage devices, munication interface firmware of SD card, FAT16, FAT32 and FAT12 file system manage firmware in the inner. It supports mon USB storage devices (contains USB Flash Drive/USB hard disk/USB Flash memory/USB read card) and SD cards (contain SD card with standard capacity and HC-SD card with high capacity, MMC card and TF card patible with protocol). CH376 supports three munication interfaces: 8-bit parallel, SPI interface or asynchronism serial interface. DSP/MCU/MPU etc. controller via the any interface of them to control CH376 chip, storage and get file in USB Flash Drive or SD card, or munication with puter. The USB-DEVICE Mode of CH376 is totally patible with CH372, the USB-HOST Mode of CH375 is basically patible with CH375. The following is the application image of CH376. D0-D7 A0 RD# WR# PCS# Parallel bus SCS SCK MOSI => SDI MISO <= SDO SPI bus TXD => RXD RXD <= TXD UART INT# 8-bit passive parallel USB-Phy I/O USB-Device USB-Host File system Manage firmware SPI Device interface USB firmware ROM RAM SD card and protocol patible card: MMC Mini-SD TF card D+ DUSB Bus PC or USB device: USB flash memory USB Flash Drive /USB reader USB printer USB keyboard USB mice Local Controller DSP MCU MPU Etc. High-speed MCU asynchronism serial SD card port SPI Host SDCS SDCK SDDO SDDI SPI port CH376 chip 2.
