Datasheet

Signal Interface
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 .
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 .
Function I/O
Pin (PICtail™
Daughter Board)
Pin
(PICtail™ Plus)
Description
SCK O RC3/RB1 RF6/RG6 SPI Clock Out
SDI I RC4/RB0 RF7/RG7 SPI Data In
SDO O RC5/RC7 RF8/RG8 SPI Data Out
CD I RB4 RF0/RG0 Physical Card Insertion Detect Signal
WD I RA4 RF1/RG1 Physical Write-Protect Switch Status Signal
CS
O RB3 RB1/RB9 Low Asserting SPI Chip Select
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
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
PICtail™ Daughter Board for SD™ and MMC Cards
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
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
• 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
• 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.
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
Jumper Position Function
JP1 Pin 1-2 PIC18 Explorer Board enabled (SCK connected to RC3)
Pin 2-3 PICDEM FS USB enabled (SCK connected to RB1)
JP2 Pin 1-2 PIC18 Explorer Board enabled (SDI connected to RC4)
Pin 2-3 PICDEM FS USB enabled (SDI connected to RB0)
JP3 Pin 1-2 PIC18 Explorer Board enabled (SD0 connected to RC5)
Pin 2-3 PICDEM FS USB enabled (SD0 connected to RC7)
JP4 Pin 1-2 No Connect (user can select an available port)
Pin 2-3 (Default) Card Detect (CD) signal connected to RB4
JP5 Pin 1-2 No Connect (user can select an available port)
Pin 2-3 (Default) Write-Protect (WD) signal connected to RA4
JP6 Pin 1-2 No Connect (user can select an available port)
Pin 2-3 (Default) Chip Select (CS
) signal connected to RB3
JP7
Pin 1-2 User can use RA5 as Shutdown (SHDN
) signal for MCP1253
Pin 2-3 (Default) Shutdown disabled (connected to V
CC)
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
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
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
Incorporated, Printed in the U.S.A. All Rights Reserved. 10/08
DS51583B
*DS51583B*