Billion Electric Co. Ltd. BIL-SIM7100C Benutzerhandbuch
Smart Machine Smart Decision
SIM7100C_User Manual_V1.01
2015-09-19
43
Table 23: MMC/SD Electronic characteristic*
Symbol
Parameter
Min
Typ
Max
Unit
VDD_EXT**
LDO power output
2.71
2.85
2.99
V
V
IH
High-level input voltage
0.65·VDD_EXT
-
VDD_EXT+0.3
V
V
IL
Low-level input voltage
-0.3
0
0.3·VDD_EXT
V
V
OH
High-level output voltage
2.71
2.85
2.99
V
V
OL
Low-level output voltage
0
0
0.45
V
Note:
*For SD_DATA0-SD_DATA3
，
SD_CLK and SD_CMD
，
GPIO44 is 1.8V operation voltage.
**VDD_EXT must be set with 2.85V output.
SD_DATA3
25
SD card data3
SD_CLK
26
SD card clock
SD_CMD
21
SD card command
GPIO44
48
SD card detecting