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47	47	* Firmware upgradable via UART interface
48	48	* Ultra-long RF range
49	49
	50	+
50	50	== 1.3  Specification ==
51	51
52	52	* CPU: 32-bit 48 MHz
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67	67	* LoRa Rx current: <9 mA
68	68	* I/O Voltage: 3.3v
69	69
	71	+
70	70	== 1.4  AT Command ==
71	71
72	72	AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
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132	132	* Firmware upgradable via UART interface
133	133	* Ultra-long RF range
134	134
	137	+
135	135	== 2.3  Specification ==
136	136
137	137	* CPU: 32-bit 48 MHz
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152	152	* LoRa Rx current: <9 mA
153	153	* I/O Voltage: 3.3v
154	154
	158	+
155	155	== 2.4  Pin Mapping & LED ==
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157	157
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178	178	1. USB TO TTL Adapter
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181	181	[[image:image-20220602100052-2.png||height="385" width="600"]]
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287	287
288	288	== 3.1  Overview ==
289	289
290		-(% style="color:blue" %)**LA66 USB LoRaWAN Adapter**(%%) is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface.
	295	+(% style="color:blue" %)LA66 USB LoRaWAN Adapter(%%) is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface.
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	297	+(((
292	292	(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
	299	+)))
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	301	+(((
294	294	Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
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	305	+(((
296	296	Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application.
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	309	+(((
298	298	LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
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299	299
300	300
301	301	== 3.2  Features ==
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311	311	* AT Command via UART-TTL interface
312	312	* Firmware upgradable via UART interface
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	327	+
314	314	== 3.3  Specification ==
315	315
316	316	* CPU: 32-bit 48 MHz
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329	329	* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
330	330	* LoRa Rx current: <9 mA
331	331
	346	+
332	332	== 3.4  Pin Mapping & LED ==
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334	334
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482	482	* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
483	483	* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
484	484
	500	+
485	485	= 5.  Reference =
486	486
487	487	* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]