
COM Express™ miniBaseboard Type 2 / Connectors and Features
5.6 SD-Card
The SD-Card standard is a standard for removable memory storages designed and licensed by the SD Card Association
(http://sdcard.org). The card form factor, electrical interface and protocol are all part of the SD Card specification.
COM Express™ Type 2 pin-out based modules may provide a SDIO interface shared with GPIO signals. Therefore on COM
Express™ miniBaseboard Type 2 a SD-Card connector is available. Please check the documentation of your module if
SDIO is supported.
COM Express™ Module pin-out
DAT3/CD - Data Line 3/Card Detection
VSS 1 - Supply Voltage - GND
VDD - Supply Voltage - 3.3V
VSS2 - Supply Voltage - GND
Note: A SD-Card is detected if Card Detect is at low level. The write protection is active (read only) if SD_WP is at
high level.
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