1. Maxim AN 3969 — SD Media Format Expands the MAXQ2000's Space for Nonvolatile
This article demonstrates how to use the Secure Digital (SD) media format to expand the MAXQ2000's nonvolatile data storage.
The low-power, low-noise MAXQ2000 microcontroller is suitable for a variety of applications. The MAXQ2000 stores nonvolatile data in flash memory and has 32kWords (64kB) flash capacity that is shared with user code space. But what if your application requires more nonvolatile storage? This article demonstrates how to use the Secure Digital (SD) media format to expand the MAXQ2000's nonvolatile data storage. 9 pages.
2. Kronos Robotics How to Series: Interface the DiosPro to a MMC or SD Memory Card|
A SD card has a couple of ways you can interface. We will be using the SPI interface as it is simple and uses only 7 of the 9 pins as shown in Figure 1. The DiosPro has a hardware SPI interface built-in but it only runs at about 600K bps. The routines I have provided in the MMC library use a software interface and can reach upwards of 1.2M bps.
There are a couple hurdles to breach before you can successfully interface to one of these cards: 1) 3.3V Interface, 2) Physical connection, 3) Low level protocol, 4) FAT16 interface. 9 pages.
3. Kronos Robotics How to Series: Build A 5v MMC/SD Connector|
Memory cards need to run at 3.3v. You can run a DiosPro at 3.3v but this presents a problem when interfacing with many other devices. To create a 5v interface to a MMCor SD memory card you only need about $1 worth of componets. And depending upon the connector you choose you can mount the interface direcly on the connector. A company called SparkFun sells a couple of different MMC/SD connectors. For this article we are going to use the SD-MMC Breakout board. 12 pages.
General Characteristics: SD Memory Card Connector Push-push Normal Type; Card Detect Enable; Write Protect Enable. 1 page.
5. Transcend Micro SDHC Card|
Transcend High Capacity microSD Card series are specifically designed to meet the High Capacity, High Definition Audio and Video requirement for the latest Digital Cameras, DV Recorders, Mobile Phones, etc. The new defined Speed Class enables the host to support AV applications to perform real time recording to the microSD memory card. 26 pages.