Quectel SG368Z Series

Smart Module Series
SG368Z_Series_Hardware_Design 46 / 113
S1
Module
VOL_UP/BOOT
Figure 10: Reference Design of VOL_UP/BOOT
.
4.3. SD Card Interface
SD card interface of the module complies with SD 3.0 specifications:
Table 14: Pins Description of SD Card Interface
The VOL_UP/BOOT grounded circuit cannot be connected in series with resistors to prevent affecting
the internal voltage division.
Pin Name
Pin No.
I/O
Description
Comment
SD_VDD
262
PO
SD card power supply
Dedicated for SD card
power supply.
SD_CLK
252
DO
SD card clock
SD_CMD
247
DIO
SD card command
SD_DATA0
246
DIO
SDIO data bit 0
SD_DATA1
251
DIO
SDIO data bit 1
SD_DATA2
256
DIO
SDIO data bit 2
SD_DATA3
257
DIO
SDIO data bit 3
SD_DET
261
DI
SD card hot-plug detect
NOTE