User manual

LPC3250 Developer’s Kit v2 - User’s Guide

Page 21

4.8 SP6: SD/MMC Memory Card Interface

The board has a SD/MMC memory card interface, J13. Supply voltage to the external memory card is

controlled via Q1. The Card Detection (CD) and Write Protect (WP) signals are connected to the I2C

port expander on schematic page 7. There is also visual indication of supply voltage and the CD and

WP signals via LEDs, see picture below where to find the LEDs on the board. Note that the Write

Protect-LED is actually inverted. It is on when the memory card is not write protected and off when it is

write protected.

Figure 7 – SD/MMC Memory Card Interface

SD/MMC Connector

J13

Card Detect-LED

LED20

Write Protect-LED

LED19

Power-LED

LED18