Specifications

Shenzhen RF-star Technology Co.,Ltd.
5
DIO25
GPIO
6
DIO26
GPIO
7
DIO27
GPIO
8
VCC
Supply
The supply of module: 1.8V ~ 3.8V, 3.3V is
recommended
9
GND
GND
10
DIO7
GPIO
11
TMSC
JTAG_TMSC
12
TCKC
JTAG_TCKC
13
DIO21
GPIO
14
DIO20
GPIO
15
DIO5
GPIO
16
DIO6
GPIO
⚫ The considerations hardware design
⚫ 1. It is recommended to use a DC regulated power supply to power the module. The ripple
coefficient of the power supply should be as small as possible and the module should be reliably
grounded. Please pay attention to the correct connection of the positive and negative poles of the
power supply, such as the reverse connection may cause permanent damage to the module;
⚫ 2. Please check the power supply to ensure that the module will be permanently damaged if the
maximum power supply voltage is exceeded; Please check the stability of the power supply. The
voltage cannot fluctuate greatly and frequently.
⚫ 3. When designing the power supply circuit for the module, it is often recommended to keep more
than 30% allowance, which is conducive to the long-term and stable work of the whole machine; The
module should be as far away from the power supply, transformers, high-frequency wiring and other
parts of large electromagnetic interference;
⚫ 4. High-frequency digital wiring, high-frequency analog wiring and power wiring must avoid the lower
part of the module. If it is really necessary to pass through the lower part of the module, assume that
the module is welded on the Top Layer, and the Top Layer of the contact part of the module is
covered with copper (all copper and well grounded).Must be close to the digital part of the module
and routed in the Bottom Layer.
⚫ 5. Assuming that the module is welded or placed in the Top Layer, it is also wrong to run wires
randomly in the Bottom Layer or other layers, which will affect the stray and reception sensitivity of
the module to varying degrees;