管脚说明
## 1. 管脚定义图
## 2. 管脚定义说明
**注意**：不是由客户应用程序使用的接口必须悬空。模块采用了必要的内部电路，以保持与默认状态无关的信号。对于没有应用的管脚，不要连接任何的器件或施加任何的电压。
|Pin#|引脚信号名称|描述|I/O|上电电压|待机电压|电平说明|
|-|-|-|-|-|-|-|-|
|**电源**
|9|VBAT|直流电源供应|I|-|-|3.4V~4.2V|
|10|VBAT|直流电源供应|I|-|-|3.4V~4.2V|
|1|GND|接地|-|-|-|-|
|2|GND|接地|-|-|-|-|
|4|GND|接地|-|-|-|-|
|5|GND|接地|-|-|-|-|
|7|GND|接地|-|-|-|-|
|8|GND|接地|-|-|-|-|
|32|GND|接地|-|-|-|-|
|42|GND|接地|-|-|-|-|
|**控制&状态**
|38|LPG|模块的工作状态指示信号|O|-|-|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V|
|13|VDD|LDO 输出信号，显示模块的开机|O|2.8|2.8|VOLMAX=0.3V VOHMIN=VDD-0.35V|
|37|EMERG_RST|紧急关机|I|H|H|-|
|14|POWER_ON|开机控制|I|H|H|2.5V~3.3V
|41|WAKE_UP|唤醒/睡眠|I|-|L|VIL~MAX~=0.2*VDD VIH~MIN~=0.7 *VDD
|18|UART1_RXD|模块接收数据|I|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|19|UART1_TXD|模块发送数据|O|-|H|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|22|UART1_RING|Ring 指示|O|-|H|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|16|UART1_DSR|数据设备准备|O|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|20|UART1_RTS|请求发送|O|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|15|UART1_DTR|数据终端准备|I|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|16|UART1_DSR|数据设备准备|I|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|21|UART1_CTS|清空发送|I|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|17|UART1_DCD|数据载波检测|O|-|L|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|**TRACE**
|12|HST_TXD|发送数据|O|-|H|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|11|HST_RXD|接收数据|I|-|H|VOL~MAX~=0.3V VOH~MIN~=VDD-0.35V VIL~MAX~=0.2*VDD VIH~MIN~=0.7*VDD
|**未定义**
|23|-|-|-|-|-|-|
|24|-|-|-|-|-|-|
|25|-|-|-|-|-|-|
|26|-|-|-|-|-|-|
|27|-|-|-|-|-|-|
|28|-|-|-|-|-|-|
|29|-|-|-|-|-|-|
|30|-|-|-|-|-|-|
|31|-|-|-|-|-|-|
|33|-|-|-|-|-|-|
|34|-|-|-|-|-|-|
|35|-|-|-|-|-|-|
|36|-|-|-|-|-|-|
|39|-|-|-|-|-|-|
|40|-|-|-|-|-|-|
|**其他**
|3|RF_ANT|射频天线接口|-|-|-|-|