LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 26 / 90
open.
SD Card Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
SD_DET*
23
DI
SD card detect
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
DATA3
28 IO
SD card SDIO data bit
3
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
DATA2
29 IO
SD card SDIO data bit
2
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
DATA1
30 IO
SD card SDIO data bit
1
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
DATA0
31 IO
SD card SDIO data bit
0
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
CLK
32
DO
SD card SDIO clock
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
CMD
33 IO
SD card SDIO
command
1.8/2.8 V power
domain.
If unused, keep it
open.
SD_SDIO_
VDD
34 PO
SD card SDIO power
supply
1.8/2.8 V power
domain.
If unused, keep it
open.
WLAN Interface*
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
WLAN_SLP_
CLK
118
DO
WLAN sleep clock
If unused, keep it
open.