Table of Contents
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SD_DATA1
SD_DATA2
SD_DATA3
SD_DET
SD_LDO21A
SD_LDO13A
TP (Touch Panel) Interface
Pin Name
TP_INT
TP_RST
TP_I2C_SCL
TP_I2C_SDA
LCM Interfaces
Pin Name
LCD_BL_A
LCD_BL_K1
LCD_BL_K2
LCD_BL_K3
LCD_BL_K4
SA800U-WF_Hardware_Design
J1-53
DIO
SDIO data bit 1
J1-57
DIO
SDIO data bit 2
J1-55
DIO
SDIO data bit 3
SD card hot-plug
J1-49
DI
detect
J1-151,
SD card power
J1-153,
PO
supply
J1-155
1.8/2.95 V output
power for SD
J4-11
PO
card pull-up
circuits
Pin No.
I/O
Description
J2-48
DI
TP interrupt
J2-50
DO
TP reset
J2-44
OD
TP I2C clock
J2-46
OD
TP I2C data
Pin No.
I/O
Description
Power output for
J4-4
PO
LCD backlight
Current sink 1 for
J4-3
AI
LCD backlight
Current sink 2 for
J4-2
AI
LCD backlight
Current sink 3 for
J4-27
AI
LCD backlight
Current sink 4 for
J4-26
AI
LCD backlight
Smart Module Series
SA800U-WF Hardware Design
V
max = 0.58 V
IL
V
min = 1.27 V
IH
V
max = 0.45 V
OL
V
min = 1.4 V
OH
2.95 V SD card:
V
max = 0.73 V
IL
V
min = 1.85 V
IH
V
max = 0.36 V
OL
V
min = 2.22 V
OH
V
max = 0.63 V
IL
V
min = 1.17 V
IH
Vnom = 2.95 V
I
max = 800 mA
O
Vnom = 1.8/2.95 V
I
max = 50 mA
O
DC Characteristics
V
max = 0.63 V
IL
V
min = 1.17 V
IH
V
max = 0.45 V
OL
V
min = 1.35 V
OH
DC Characteristics
Active low.
Comment
1.8 V power
domain.
Comment
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