Sd Card Interface - Quectel EC200U Series Hardware Design

KEYIN1 78
KEYIN2 79
KEYIN3 80
KEYOUT0 83
KEYOUT1 84
KEYOUT2 113
KEYOUT3 114

3.17. SD Card Interface

The module supports SDIO 2.0 interface for SD card.
Table 24: Pin Definition of SD Card Interface
Pin Name Pin No.
SD_DET 23
SDIO1_DATA3 28
SDIO1_DATA2 29
SDIO1_DATA1 30
SDIO1_DATA0 31
SDIO1_CLK 32
SDIO1_CMD 33
SDIO1_VDD 34
The following figure shows a reference design of SD card interface.
EC200U_Series_Hardware_Design
DI Matrix keyboard input1
DI Matrix keyboard input2
DI Matrix keyboard input3
DO Matrix keyboard output0
DO Matrix keyboard output1
DO Matrix keyboard output2
DO Matrix keyboard output3
I/O Description
DI SD card detect
DIO SDIO data bit 3
DIO SDIO data bit 2
DIO SDIO data bit 1
DIO SDIO data bit 0
DO SDIO clock
DIO SDIO command
PO SDIO power supply
LTE Standard Module Series
it can be used as KEYIN0
after startup.
1.8 V power domain.
If unused, keep it open. The
KEYIN1 cannot be pulled up
before startup.
1.8 V power domain.
If unused, keep them open.
Comment
1.8 V power domain.
If unused, keep it open.
1.8/3.2V power domain.
If unused, keep them open.
50 / 94