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  • Modifying the PICDEMTM USB Board for PIC18 Full-Speed USB Microcontrollers
    . that the external clock source is 20 MHz. Note that these changes represent the bare minimum. 2. Remove resistor R1 to permit the use of the on-. needed to make the demo application work. Should fur-. chip USB pull-up resistor. R2 should be left. ther modifications be required, or to troubleshoot other
  • USB Mass Storage Class on an Embedded Device
    of the memory. driver is available for download from the Microchip web. requires of the USB device stack. Refer to the. site (see source code). The source code is distributed. "Memory Resource Requirements" section of. in a single Microsoft Windows® installation file. AN1176, "USB Device Stack
  • USB Mass Storage Device Reference Design Programmer's Guide
    demonstration instructions and information about the kit contents. 2. USB MSD Reference Design Hardware Overview. The MSD reference design hardware consists of two boards - C8051F340-TB Target Board and CF, SD, MMC. Memory Expansion Board (AB5). These are contained in the kits C8051F340DK and USB-MSD-RD
  • PCIe? USB? Sorting Out Two COM / SFF Design Decisions
    ; unlike PCI and PCIe devices with complex register maps and memory locations, USB is treated more as a collection of control functionality combined with a few high-bandwidth streaming pipes. Instead of issuing a dozen or more assembly language OUT DX,AX instructions, you might issue a single usb
  • Migrating Applications to USB from RS-232 UART with Minimal Impact on PC Software
    of the data string known?. · Is the data source located in program memory or. in RAM?. DS00956B-page 2. 2004 Microchip Technology Inc. AN956. TABLE 1: SUMMARY OF THE USB UART FUNCTIONS. Function. Description. putrsUSBUSART. Write a null-terminated string from program memory to the USB. putsUSBUSART
  • Implementing File I/O Functions Using Microchip?s Memory Disk Drive File System Library
    disk drive file system lers to SD cards or MMCs is included in AN1003, "USB library. Microchip's memory disk drive file system is: Mass Storage Device Using a PIC(R) MCU" (DS01003), * Based on ISO/IEC 9293 specifications available from the Microchip web site. * Known as the FAT16 file system, used
  • The Precision32TM Family of Mixed-Signal Microcontrollers
    By Linley Gwennap, Principal Analyst, The Linley Group. This paper describes Silicon Labs' new Precision32TM microcontrollers, the company's first 32-bit MCUs. In addition to the ARM-compatible CPU, the chips integrate USB and a set of analog components along with the usual flash memory, SRAM
  • Video Playback and Streaming Solutions Using the PIC(R) MCU
    The required bandwidth for data access from off-chip components can be a bottleneck in the system performance. for microcontroller (MCU) video applications. This restriction translates into limiting the number of read and write accesses to the external memory device during a given time period

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