Users Manual Part 1

SIM8260A_Hardware Design_V1.05
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(U)SIM2_DATA
G47
DIO
P5
(U)SIM2card data, which has
been pulled up to
(U)SIM2_VDD by a 20K
resistor in Module
(U)SIM2_CLK
H49
DO
P5
(U)SIM2 clock signal
(U)SIM2_RST
G51
DO
P5
(U)SIM2 reset signal
(U)SIM2_DET
F45
DI
P3
(U)SIM2 card detect, which
need pulled up to VDD_EXT
by a 470K resistor externally
SPI interface
SPI_CS_N
D18
DO
P3
SPI chips select
SPI_CLK
D20
DO
P3
SPI clock
SPI_MOSI
D14
DO
P3
Master output slaver input
SPI_MISO
D16
DI
P3
Master input slaver output
UART1 interface
UART1_CTS
AA1
DI
P3
Clear to send
Default use for AT
command
UART1_RTS
AC1
DO
P3
Request to send
UART1_TXD
AB3
DO
P3
Transmit data
UART1_RXD
AD3
DI
P3
Receive data
UART1_DCD
W5
DO
P3
Carrier detect
If not need 7-wire UART,
these signals can be
used as GPIO
UART1_RI
AA5
DO
P3
Ring indicator
UART1_DTR
AC5
DI
P3
Data terminal ready
BT UART interface
BT_UART_CTS
R5
DI
P3
Clear to send
Default use for BT
BT_UART_RTS
U5
DO
P3
Request to send
BT_UART_TXD
T7
DO
P3
Transmit data
BT_UART_RXD
V7
DI
P3
Receive data
Debug UART interface
DBG_UART_RXD
L5
DI
P3
Receive data
Used for debug only
DBG_UART_TXD
N5
DO
P3
Transmit data
I2C interface
1
I2C1_SCL
M7
OD
P3
I2C1 clock signal
I2C1 default use for
codec Pull up to
VDD_EXT externally
I2C1_SDA
P7
OD
P3
I2C1 data signal
I2C2_SCL
AB7
OD
P3
I2C2 clock signal
I2C2 default use for
sensor
Pull up to VDD_EXT
Externally
FOR EBI LCD
PIN AB7 GPIO84 for EBI
LCD_TE
PIN Y7 GPIO85 for EBI
LCD_RESET
I2C2_SDA
Y7
OD
P3
I2C2 data signal