*
内部资料
*
本文档中包含的信息涉及深圳迈瑞生物医疗电子股份有限公司秘密，均为内部保密信息，未经许可，不得外发。
34
SPI_0_MISO
O
reserved
35
SPI_0_CLK
I
reserved
36
GND
A
GND
37
RF_SW_CTRL_4
O
reserved
38
RF_SW_CTRL_5
O
reserved
39
GND
A
GND
40
ANT
A
reserved
41
GND
A
GND
Pins that are not used can be left NC.
1.2
timing
The power-on sequence requirements for Wlink modules are as follows
：
3.3V IN
（
VBAT
）
3.3V IN
（
VDDIO
）
The serial communication timing requirements are as follows
：
WKUP
TXRDY
TXD
RXD
Sleep
WKUP and TXD are the output signals of the upper computer. After WKUP changes from high to low,
TXRDY signal must respond to the low level of T2 length within T1 time. After that, the host computer sends
serial port commands. Before Wifi module sends serial data, it needs to drive TXRDY signal to low.
1.3
power
Wlink works with single DC power supply, the power supply voltage range is 3.13V~3.6V.
When the supply voltage is 3.3V, the peak current is typically 250mA and the maximum is 399mA.
