Delta AH500 - 7.1 Overview of Memory Cards; 7.1.1 Appearances of Memory Cards; 7.1.2 Specifications for SD Cards

AH500 Hardware and Operation Manual
7-2
7.1 Overview of Memory Cards
The AH500 series CPU modules support standard SD cards. Users can purchase products which meet
specifications. The specifications for the SD cards supported by the AH500 series CPU modules, and the
usage of the SD cards are described in this chapter.
7.1.1 Appearances of Memory Cards
SD cards are classified into three types according to size. They are SD cards, miniSD cards, and microSD
cards. The AH500 series CPU modules support standard-sized SD cards.
7.1.2 Specifications for SD Cards
There are several specifications for SD cards on the market. SD cards not only can be classified according to
size, but also can be classified into three types according to capacity. These types are SD cards, SDHC cards,
and SDXC cards. The AH500 basic series CPU modules presently support SD cards up to 2GB and the
AH500 advanced series CPU modules presently support SDHC cards up to 32GB. The following is the table
of SD card families. The SD column indicates the specifications supported by the AH500 basic series CPU
modules and the SDHC column indicates the specifications supported by the AH500 advanced series CPU
modules. Be sure to purchase products which meet the specifications.
 The SD card families
AH500 Basic / Advanced
CPU
AH500 Advanced CPU --
Type
SD SDHC SDXC
Capacity
32MB~2GB 4GB~32GB 32GB~2TB
File
system
FAT16/FAT32 FAT32
exFAT（FAT64）
Size
SD SDHC
Mini
SDHC
Micro
SDHC
SDXC Micro SDXC
Speed
class
rating
N/A
CLASS 2 (Min. 2MB/Sec.)
CLASS 4 (Min. 4MB/Sec.)
CLASS 6 (Min. 6MB/Sec.)
CLASS 10 (Min. 10MB/Sec.)
CLASS 2 (Min. 2MB/Sec.)
CLASS 4 (Min. 4MB/Sec.)
CLASS 6 (Min. 6MB/Sec.)
CLASS 10 (Min. 10MB/Sec.)
* MMC cards are similar to SD cards in appearance. Users have to make sure that they purchase products
which meet the specifications.
SD
Mini SD
Micro SD