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Last updated: 30 Jun 2020
The FRDM-KL25Z is an ultra-low-cost development platform for Kinetis L Series KL1x (KL14/15) and KL2x (KL24/25) MCUs built on ARM® Cortex™-M0+ processor. Features include easy access to MCU I/O, battery-ready, …

KL25Z and seeed SD card

Topic last updated 24 Oct 2014, by Keith 55. 2 replies
Keith 55
23 Oct 2014

I have a KL25Z and a seeed SD card version 4. I am new to this, and still trying to find my way. I need to know two things. 1. What connection points on the KL25Z need to be connected to the SD card, and 2. Where can I find a sample MBED program that will read and write to the SD card. I appreciate your help.

Yoshi Mimura
24 Oct 2014

Please be aware that the KL25Z is not 5V tolerant.
http://developer.mbed.org/questions/1113/Are-the-FRDM-KL25Z-IO-5V-tolerant/
The seeed SD card version 4 is 5V board, then it is not good to use with KL25Z.
Please use 3.3V board such as seeed SD Card Shield V3.0.
http://www.seeedstudio.com/wiki/SD_Card_Shield_V3.0
A sample mbed program can be found following page;
http://developer.mbed.org/questions/2615/how-to-use-a-SD-card-on-kl25z/

Keith 55
24 Oct 2014

Thank you very much. Your comments are very helpful.