Smart Module Series
SC206E_Series_Hardware_Design 28 / 115
USIM1_DATA
25
DIO
(U)SIM1 card data
V
IL
max = 0.2 × USIM1_VDD
V
IH
min = 0.7 × USIM1_VDD
V
OL
max = 0.4 V
V
OH
min = 0.8 × USIM1_VDD
Cannot be multiplexed
into a generic GPIO.
USIM1_CLK
24
DO
(U)SIM1 card clock
V
OL
max = 0.4 V
V
OH
min = 0.8 × USIM1_VDD
USIM1_RST
23
DO
(U)SIM1 card reset
USIM1_DET
22
DI
(U)SIM1 card hot-plug
detect
V
IL
max = 0.63 V
V
IH
min = 1.17 V
Active low. Externally
pull it up to 1.8 V.
If unused, keep it open.
USIM2_VDD
21
PO
(U)SIM2 card power
supply
I
O
max = 67 mA
1.8 V (U)SIM:
Vmax = 1.85 V
Vmin = 1.75 V
2.95 V (U)SIM:
Vmax = 3.1 V
Vmin = 2.8 V
Either 1.8 V or 2.95 V
(U)SIM card is
supported.
USIM2_DATA
20
DIO
(U)SIM2 card data
V
IL
max = 0.2 × USIM2_VDD
V
IH
min = 0.7 × USIM2_VDD
V
OL
max = 0.4 V
V
OH
min = 0.8 × USIM2_VDD
Cannot be multiplexed
into a generic GPIO.
USIM2_CLK
19
DO
(U)SIM2 card clock
V
OL
max = 0.4 V
V
OH
min = 0.8 × USIM2_VDD
USIM2_RST
18
DO
(U)SIM2 card reset
USIM2_DET
17
DI
(U)SIM2 card hot-plug
detect
V
IL
max = 0.63 V
V
IH
min = 1.17 V
Active low. Externally
pull it up to 1.8 V.
If unused, keep it open.
SD Card Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
SD_CLK
39
DO
SD card clock
50 Ω characteristic
impedance.
SD_CMD
40
DO
SD card command
SD_DATA0
41
DIO
SDIO data bit 0
SD_DATA1
42
DIO
SDIO data bit 1
SD_DATA2
43
DIO
SDIO data bit 2
SD_DATA3
44
DIO
SDIO data bit 3
SD_DET
45
DI
SD card hot-plug detect
V
IL
max = 0.63 V
V
IH
min = 1.17 V
Active low.
SD_LDO21
38
PO
SD card power supply
2.95 V/841 mA
