AC164122【PDF 1/2 页】BOARD DAUGHT PICTAIL SD/MMC CARD

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Signal Interface

PICtail? Daughter Board for SD? and MMC Cards

Function

SCK

SDI

SDO

I/O

Pin (PICtail?

Daughter Board)

RC3/RB1

RC4/RB0

RC5/RC7

RB4

RA4

RB3

(PICtail? Plus)

RF6/RG6

RF7/RG7

RF8/RG8

RF0/RG0

RF1/RG1

RB1/RB9

Description

SPI Clock Out

SPI Data In

SPI Data Out

Physical Card Insertion Detect Signal

Physical Write-Protect Switch Status Signal

Low Asserting SPI Chip Select

Overview

The PICtail Daughter Board for SD and MMC Cards is a demonstration board for evaluating reading and writing data on

SD or MMC cards. It is an expansion board compatible with a number of PICDEM? demonstration boards. A complete

list of compatible PICDEM demonstration boards is available on Microchip’s web site.

Note: The implementation and use of the FAT file system, SD card specifications, MMC card specifications and other

third party tools may require a license from various entities, including, but not limited to Microsoft ? Corporation, SD

Card Association and MMCA. It is your responsibility to obtain more information regarding any applicable licensing

obligations. Some third party web sites have been listed in “References” for your convenience.

Getting Started

To get started, a compatible PICDEM demonstration board is required. In general, a board is compatible if it has a

Other Information

To obtain additional information about how this demonstration board can be used, including application examples and

source code, please refer to AN1189 “Implementing a Mass Storage Device Using Microchip USB Device Firmware

Framework” and AN1045 “Implementing File I/O Functions Using Microchip’s Memory Disk Drive File System

Library” .

References

FAT File System Specification available by license, http://www.microsoft.com/mscorp/ip/tech/fat.asp .

PICtail Daughter Board interface expansion port or a PICtail Plus board interface expansion port. Most PICDEM

demonstration boards do not have the female PICtail Daughter Board header installed, so a 14x2 female connector is

included with this kit for the user to install onto the PICDEM demonstration board if necessary. When connecting this

daughter board to a board with the PICtail Plus connector, like the Explorer 16 Development Board, the connector

should be inserted in the first slot of the demonstration board (aligned with Pin #1) to communicate using the SPI1

module, or in the second slot of the demonstration board (aligned with Pin #33) to communicate using the SPI2

module. Note that the pins used for other signals will change as well, depending on the slot selected.

Features

MMC Specifications: some are available by license and others are available for purchase,

http://www.mmca.org/compliance .

SD Card Specification available by license, http://www.sdcard.org .

Supports a wide range of SD cards

Supports auto-triggering of files on SD cards

Operates on a wide range of voltages from 3.3V-5.0V DC

Includes PICtail Daughter Board and PICtail Plus Board connection interfaces

Americas

Atlanta - 678-957-9614

Boston - 774-760-0087

Chicago - 630-285-0071

Dallas - 972-818-7423

Detroit - 248-538-2250

Kokomo - 765-864-8360

Los Angeles - 949-462-9523

Phoenix - 480-792-7200

Santa Clara - 408-961-6444

Toronto - 905-673-0699

Asia/Pacific

Australia - Sydney - 61-2-9868-6733

China - Beijing - 86-10-8528-2100

China - Chengdu - 86-28-8665-5511

China - Hong Kong SAR - 852-2401-1200

China - Nanjing- 86-25-8473-2460

China - Qingdao - 86-532-8502-7355

China - Shanghai - 86-21-5407-5533

China - Shenyang - 86-24-2334-2829

China - Shenzhen - 86-755-8203-2660

China - Wuhan - 86-27-5980-5300

Europe

Austria - Weis - 43-7242-2244-39

Denmark - Copenhagen - 45-4450-2828

France - Paris - 33-1-69-53-63-20

Germany - Munich - 49-89-627-144-0

Italy - Milan - 39-0331-742611

Netherlands - Drunen - 31-416-690399

Spain - Madrid - 34-91-708-08-90

UK - Wokingham - 44-118-921-5869

01/02/08

? Compatible with many boards with PICtail Daughter Board and PICtail Plus interface, including Explorer 16

Development Board, PIC18 Explorer and PICDEM FS USB demo boards

Board Configurations

A total of 7 jumper locations are available. As shipped from the factory, some of the jumper locations are bridged by

circuit traces forming a default setup. To change this, the user will need to cut the traces and install pins and a block

jumper. Afterward, the features can be enabled or disabled easily by installing or removing the jumper.

Note: Jumpers, JP1-JP6, are only used to configure pin settings for the PICtail Daughter Board connector. To switch

between sets of operating pins on a PICtail Plus header, the card edge connector must be swapped between the first

and second slot of the PICtail Plus socket. Jumper, JP7, is also used only by the PICtail Daughter Board connector.

China - Xiamen - 86-592-2388138

China - Xian - 86-29-8833-7252

China - Zhuhai - 86-756-3210040

India - Bangalore - 91-80-4182-8400

India - New Delhi - 91-11-4160-8631

India - Pune - 91-20-2566-1512

Japan - Yokohama - 81-45-471-6166

Korea - Daegu - 82-53-744-4301

Korea - Seoul - 82-2-554-7200

Malaysia - Kuala Lumpur - 60-3-6201-9857

Malaysia - Penang - 60-4-227-8870

Philippines - Manila - 63-2-634-9065

Singapore - 65-6334-8870

Taiwan - Hsin Chu - 886-3-572-9526

Taiwan - Kaohsiung - 886-7-536-4818

Taiwan - Taipei - 886-2-2500-6610

Thailand - Bangkok - 66-2-694-1351

Jumper

JP1

JP2

JP3

JP4

JP5

JP6

JP7

Position

Pin 1-2

Pin 2-3

Pin 1-2

Pin 2-3

Pin 1-2

Pin 2-3

Pin 1-2

Pin 2-3 (Default)

Pin 1-2

Pin 2-3 (Default)

Pin 1-2

Pin 2-3 (Default)

Pin 1-2

Pin 2-3 (Default)

Function

PIC18 Explorer Board enabled (SCK connected to RC3)

PICDEM FS USB enabled (SCK connected to RB1)

PIC18 Explorer Board enabled (SDI connected to RC4)

PICDEM FS USB enabled (SDI connected to RB0)

PIC18 Explorer Board enabled (SD0 connected to RC5)

PICDEM FS USB enabled (SD0 connected to RC7)

No Connect (user can select an available port)

Card Detect (CD) signal connected to RB4

No Connect (user can select an available port)

Write-Protect (WD) signal connected to RA4

No Connect (user can select an available port)

Chip Select (CS) signal connected to RB3

User can use RA5 as Shutdown (SHDN) signal for MCP1253

Shutdown disabled (connected to V CC )

Microchip Technology Inc. ? 2355 West Chandler Blvd. ? Chandler, AZ 85224-6199

www.microchip.com

The Microchip name and logo and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the

U.S.A. and other countries. PICtail and PICDEM are trademarks of Microchip Technology Incorporated in the U.S.A. and other

countries. All other trademarks mentioned herein are property of their respective companies. ? 2008, Microchip Technology

DS51583B

*DS51583B*

Firmware

USB mass storage examples can be downloaded from http://www.microchip.com/usb . USB products will require a

vendor ID and product ID. For more information, consult Application Note, AN1189 (DS01189). Application Note,

AN1045 (DS01045), provides a method for interfacing directly to SD cards formatted with a FAT file system. It can be

downloaded from:

http://www.microchip.com/Stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en532040

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