User's Manual

LILY-W1 series - Data Sheet
UBX-15000203 - R04 Early Production Information Electrical specifications
Page 19 of 38
4.2.6 SDIO characteristics
The SDIO signals are supplied with the VCC_IO pin and you can select either 1.8 V or 3.3 V.
(VCC = 3.3 V, T
amb
= 25 °C)
Signals
Symbol
Parameter
Min
Typ.
Max
Unit
VCC_IO levels
SDIO_D[0..3],
SDIO_CMD,
SDIO_CLK,
V
IL
LOW level input voltage
-0.4
-
0.3*VCC_IO
V
V
IH
HIGH level input voltage
0.7*VCC_IO
-
VCC_IO+0.4
V
V
OL
LOW level output voltage
-
-
0.4
V
V
OH
HIGH level output voltage
VCC_IO-0.4
-
-
V
V
HYS
Input hysteresis
100
-
-
mV
Clock frequency
f
NS
Clock frequency normal
speed
-
-
25
MHz
f
HS
Clock frequency high speed
-
-
50
MHz
Table 13: SDIO characteristics