Use Instructions

L710HG Hardware Design
18
RI 55 DO Ring Indicator.
If not use keep it
open.
DCD 56 DO Carrier detects.
If not use keep it
open
TX 54 DO Transmit Data.
If not use keep it
open.
DTR 57 DI DTE get ready.
If not use keep it
open.
DEBUG PORT
Pin Name Pin No. I/O Description Content
UART_TX_DB
G
24 DO LOG for DEBUG
If not use, it is
recommended to
reserve test
points
UART_RX_DB
G
38 DI LOG for DEBUG
I2C interface
Pin Name Pin No. I/O Description Content
I2C_SCL 43 DO I2C clock output.
If not use keep it
open.
I2C_SDA 44 I/O I2C data input/output.
RF port
Pin Name Pin No. I/O Description Content
MAIN _ANT 18 AIO Main Antenna
Others
Pin Name Pin No. I/O Description Content
ADC1 35 AI Analog conversion digital input interface1
If not use keep it
open.
FORCE_USB_
BOOT
58
DI,PD;
I/O
Pull up to 1.8V (L710HG VDD_1V8)
with 10K
resistor force module in USB download mode
Recommend placing
test points for
debug.
BOOT_CFG0 23
DI,PD;
I/O
Pull up to 1.8V (L710HG VDD_1V8)
with 10K
resistor will force
module to disable
watchdog function when boot;
The default state of BOOT_CFG0 is NC when
boot;
BOOT_CFG0 can be used as general GPIO after
boot;
RESERVED 10,15,21,37,38 Reserved for other purposes Keep them open
3.2 Operating condition
Table 3-4 module recommended operating condition
Parameter Description Min. Typ. Max. Unit