SD CARD X49

Features

• SD or SDHC card adapter
• 5V to 3.3V regulator
• 3.3V to 5V TXS0104E level shifter
• Activity LED
• 49 x 49 mm ODAS foprm factor
• (4) 4-40 mounting holes

Power Options

Important to properly set up the power option

• 3.3V Host
  • Wire power to 3.3V position
  • Install Jumper J3
  • Leave 5V in pin open
• 5V Host
  • Wire Power to 5V
  • Leave 3.3V open
  • Remove Jumper J3

J1 pinout

1. GND
2. MISO
3. SCLK
4. MOSI
5. SPI_SS
6. CARD_DETECT (no pull-up)
7. 3.3V in/out
8. 5V in (for 5V host only)

Schematic

• Rev 1 Schematic
• Rev 2 Schematic

Lock/Unlock

• Set switch to not locked position

Used with Z80_PSOC card

• PSOC Pins
  • MISO - PSOC pin 76
  • MOSI - PSOC pin 77
  • SCLK - PSOC pin 78
  • SPI_SS - PSOC pin 79

Z80_PSOC - H3 Connector

1. GND
2. +5V
3. SPI_SS - PSOC pin 79
4. SCLK - PSOC pin 78
5. MOSI - PSOC pin 77
6. MISO - PSOC pin 76

Testing

• Testing is done using an Arduino uno at 5V

Hardware

• Unit Under Test (UUT)
  • NO5V jumper not installed
• Arduino UNO card
• FAT32 card with files on it
• Arduino Sensor Shield
  • GVS connections

Test Cabling

• USB cable to PC
• Cable from Arduino Sensor Shield to UUT
  • 2x3 Dupont to D13/D12 and D11/D10
  • 8 pin Dupont to SD card

Signal Name	SD Card pin	Color	Sensor Shield pin
GND	1	Green	D13 GND
MISO	2	Violet	D12
SCLK	3	Grey	D13
MOSI	4	Brown	D11
SPI_SS	5	Yellow	D10
CARD_DETECT (no pull-up)	6	None	N/A
3.3V in/out	7	None	N/A
5V in (for 5V host only)	8	Orange	D13 VCC

Debugging

• Error message

Initializing SD card...initialization failed. Things to check:
1. is a card inserted?
2. is your wiring correct?
3. did you change the chipSelect pin to match your shield or module?
Note: press reset or reopen this serial monitor after fixing your issue!

• If test fails verify SD card is good in SD card adapter on PC

Software

• Arduino Sketch used to test cards
  • Using the SD library to print the directory of files on SD card - Arduino code

Running

• SD card with something on it
• Run Serial Monitor
  • 9600 baud
• Prints directory to monitor

Initializing SD card...initialization done.
SYSTEM~1/
        WPSETT~1.DAT            12
        INDEXE~1                76
README.TXT              1372
done!

• Reset button on sensor shield to re-run

Mounting

Card Mounted in a Chassis

Mounted on ODAS Carrier Card

• CARRIER95TO49MM

Assembly Sheet

SD_CARD_X49 Assembly Sheet