ASR Microelectronics Confidential 
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文档编号: (芯片型号) –ASR6505(英文、数字)                         
 
 
 
 
 
ASR6505 Datasheet 
 
文件状态: 
当前版本: 
V0.3 
[√]  正在修改 
作者: 
ASR6505 Design Team 
[    ]  正式发布 
启动日期: 
2019-3-1 
审核: 
 
完成日期: 
2019-7-1 
 
 
 
 
 
翱捷科技(深圳)有限公司 
ASR Microelectronics Co., Ltd 
(版本所有,翻版必究) 
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ASR Microelectronics Confidential 
版本历史 
版本号  修改日期 
作 者 
修 改 说 明 
V0.1 
2019.3.12 
ASR6505 Design Team  Created 
V0.2 
2019.5.24 
ASR6505 Design Team  1. Change the pinmap description. 
2. Change chip current parameters. 
V0.3 
2019.7.1 
ASR6505 Design Team  1. Change Product marking of ASR6505. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ASR Microelectronics Confidential 
Table of Contents 
1  GENERAL DESCRIPTION ...................................................................................................................................... 4 
1.1 
1.2 
1.3 
Key Feature .............................................................................................................................................. 4 
Block Diagram .......................................................................................................................................... 5 
General Specification ............................................................................................................................... 5 
2 
ELECTRICAL CHARACTERISTICS .................................................................................................................... 5 
2.1 
2.2 
2.3 
2.4 
2.5 
Absolute Maximum Rating ...................................................................................................................... 5 
Power Consumption Characteristics ........................................................................................................ 6 
Recommended Operating Range ............................................................................................................. 6 
RF Characteristics ..................................................................................................................................... 6 
Digital Characteristics .............................................................................................................................. 7 
DC Characteristics ........................................................................................................................ 7 
RST Characteristics ....................................................................................................................... 7 
2.5.1 
2.5.2 
3 
PIN DEFINITION ...................................................................................................................................................... 7 
3.1 
Pin Assignment ........................................................................................................................................ 9 
4  MECHANICAL DIMENSION   .............................................................................................................................. 10 
5 
PACKAGE INFORMATION .................................................................................................................................. 10 
5.1 
Product Marking .................................................................................................................................... 10 
 
 
 
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ASR Microelectronics Confidential 
1  General Description 
        The  ASR6505  is  a  general  LoRa  Wireless  Communication  Chipset,  with  integrated  LoRa  Radio  Transceiver, 
LoRa Modem and an 8-Bit CISC MCU. The MCU uses an advanced STM 8-bit core, with 16MHz operation frequency. 
The  LoRa  Radio  Transceiver  has  continuous  frequency  coverage  from  150MHz  to  960MHz.  The  LoRa  Modem 
supports LoRa modulation for LPWAN use cases and (G)FSK modulation for legacy use cases. The LoRa Wireless 
Communication module designed by ASR6505 provides ultra long range and ultra low power communication for 
LPWAN application. 
        The ASR6505 can achieve a high sensitivity of over -140dBm and the maximum transmit power is higher than 
+21dBm. This makes it suitable to be used in long range LPWAN and have high efficiency. The total chip package is 
of very small size, 8mm x 8mm, with totally 68 pins. 
1.1  Key Feature 
  SX1262+STM8L152 integrated. 
  Small footprint: 8mm x 8mm x 0.9mm, QFN 68pin. 
  LoRa Radio and LoRa Modem. 
  Frequency Range: 150MHz ~ 960MHz. 
  Maximum Power +21dBm constant RF output. 
  High sensitivity: down to -140dBm. 
  Deepsleep mode current with RTC: 2uA. 
  TX mode current @17dBm: 50mA, @14dBm: 40mA. 
  RX mode current: 10mA. 
  Programmable bit rate up to 62.5kbps in LoRa modulation mode. 
  Programmable bit rate up to 300kbps in (G)FSK modulation mode. 
  Preamble detection. 
  Embedded memories (up to 64k bytes of Flash memory and 4k bytes of SRAM, 2k bytes of EEPROM). 
  30x configurable GPIOs, 1xI2C, 2xUART, 1xSWIM, 1xSPI, 3xADC.   
  LCD driver: 2/4/8 COM, Max 24 Segments.   
  16-MHz Harvard architecture CPU. 
  4-Channel DMA engine. 
  Embedded 12-bit 1Msps SAR ADC. 
  Embedded 2x12-bit DAC. 
  Embedded 2x low power comparators. 
  96-bit unique Chip ID. 
  32.768kHz External Watch Crystal Oscillator. 
  1-16MHz External Crystal Oscillator for MCU (Optional). 
  32MHz External Crystal Oscillator for LoRa Radio. 
  Embedded internal Low frequency (38kHz) RC oscillator. 
  Most complete EVK demo, with LCD, sensors, debug interfaces on board. 
 
 
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ASR Microelectronics Confidential 
1.2  Block Diagram 
        Fig. 1.1 shows the block diagram of ASR6505 and the ASR LoRa Communication Module. 
Fig. 1.1: The block diagram of ASR6505 and the ASR LoRa Communication Module 
The module of LoRa Communication is designed by ASR6505 and also a reference design for customers. 
Customers could communicate with ASR6505 by UART/I2C/SPI/LCD and GPIO interfaces. 
 
 
1.3  General Specification 
        Following Table 1.1 shows the general specifications of ASR6505 chipset and module. 
Table 1.1 General specifications of ASR6505 chipset and module 
Chipset Name 
Module Name 
Host Interface 
Operation Conditions 
Temperature 
Humidity 
Dimension 
Package 
 
ASR6505 
ASR6505 LoRa Wireless Communication Module 
UART, SPI, I2C, GPIO 
 
Storage: -55C ~ +125C 
  Operating: -40C ~ +85C 
 
  Operating: 10 ~ 95% (Non-Condensing) 
Storage: 5 ~ 95% (Non-Condensing) 
8mm x 8mm x 0.9mm 
QFN Type 
2  Electrical Characteristics 
        Electrical  Characteristics  include  Absolute  Maximum  Ratings  for  the  Chipset  and  Module,  Recommended 
Operating  Range  and  Power  Consumption  Characteristics.  All  the  data  are  tested  under  demo  board  with  fully 
matching and harmonic filtering networks. 
2.1  Absolute Maximum Rating 
Symbol 
VDD 
Vin 
Pin 
Parameter 
Supply Voltage 
Digital Input Voltage Level 
RF Input Power 
Min. 
-0.3 
-0.3 
 
Typ. 
 
 
 
Max. 
3.9 
3.9 
+10 
Unit 
V 
V 
dBm 
 
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LoRaMCU32.768kHz XO32MHz XOTRSWSPIDIOSMATRSW CTRLRxTxASR6505UARTI2CSPIGPIOLCD
ASR Microelectronics Confidential 
2.2  Power Consumption Characteristics 
Symbol 
IDD_SL 
Parameter 
Conditions 
Typ.  Max.  Unit 
Supply current in Sleep 
Without RF Config Retention, without RTC 
mode 
Without RF Config Retention, with RTC 
With RF Config Retention and RTC 
IDD_RX 
Supply current in Receiver 
 
mode 
IDD_TX 
Supply current in Transmitter 
Pout=+22dBm 
 
mode 
Pout=+22dBm(TX OPT) 
Pout=+21dBm 
Pout=+20dBm 
Pout=+17dBm 
Pout=+17dBm(TX OPT) 
Pout=+14dBm 
Pout=+14dBm(TX OPT) 
Pout=+10dBm 
Pout=+5dBm 
1 
1.6 
2 
9 
108 
85 
106 
98 
90 
50 
78 
40 
59 
47 
 
 
 
 
 
 
 
 
 
 
 
 
 
uA 
uA 
mA 
mA 
mA 
mA 
mA 
mA 
mA 
mA 
mA 
mA 
mA 
2.3  Recommended Operating Range 
Symbol 
VDD 
Pin 
Parameter 
Supply Voltage 
RF Input Power 
Min. 
1.8 
 
Typ. 
3.3 
 
Max. 
3.7 
+10 
Unit 
V 
dBm 
2.4  RF Characteristics 
        The table 2.1 gives the electrical specifications for the LoRa RF transceiver operating with LoRa modulation.   
        Following conditions apply unless otherwise specified: 
  Supply Voltage = 3.3V. 
  Temperature = 25C. 
  Frequency bands: 470MHz. 
  Bandwidth (BW) = 125kHz. 
  Spreading Factor (SF) = 12. 
  Coding Rate (CR) = 4/6. 
  Package Error Rate (PER) = 1%. 
  CRC on payload enabled. 
  Payload length = 10bytes. 
  Preamble Length = 12 symbols. 
  With matched impedances. 
Table 2.1: LoRa RF Transceiver Characteristics 
LoRa Transmitter RF Characteristics 
Items 
Frequency Range 
Tx Power 
Condition 
 
RFO Pin 
Min. 
150 
18 
Typ. 
470 
21 
Max. 
960 
22 
Unit 
MHz 
dBm 
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ASR Microelectronics Confidential 
LoRa Receiver RF Characteristics 
Items 
Frequency Range 
Condition 
 
Sensitivity 
125kHz Bandwidth, SF=7 
125kHz Bandwidth, SF=10 
125kHz Bandwidth, SF=12 
2nd order harmonic   
Tx Power = 20dBm 
 
2.5  Digital Characteristics 
2.5.1  DC Characteristics 
Min. 
150 
 
 
 
 
Typ. 
470 
-126 
-135 
-140 
-41 
Max. 
960 
 
 
 
 
Unit 
MHz 
dBm 
dBm 
dBm 
dBm 
Symbol 
Description 
Conditions 
Min. 
Typ. 
Max. 
Unit 
VIH 
VIL 
RPU 
RPD 
I/O input high level   
I/O input low level   
 
 
Weak pull up resistor 
Vin=GND 
Weak pull down resistor 
Vin=VDD 
0.7xVDD 
 
30 
30 
 
 
45 
45 
 
0.3xVDD 
60 
60 
V 
V 
KΩ  
KΩ  
2.5.2  RST Characteristics 
        Fig. 2.1 shows the recommended XRES pin connection. An external RESET button is used to generate reset 
pulse of the whole chip. The 0.1uF capacitor is to filter out the parasitic reset glitch. 
Fig. 2.1: XRES Pin Connection 
 
3  Pin Definition 
NO. 
PIN_NAME 
P/G/I/O 
Description 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
VR_PA 
VDD_IN 
GND_PLL 
XTA 
XTB 
NC 
DIO3 
VREG 
GND_DCC 
DCC_SW 
VBAT_RF 
O 
P 
G 
I 
I 
NC 
I/O 
O 
G 
O 
P 
Regulated power amplifier supply 
Input voltage for power amplifier, VR_PA 
Ground 
XO32M for LoRa input 
XO32M for LoRa input 
NC 
Multipurpose digital I/O-external TCXO32M supply voltage 
Regulated output voltage from the internal LDO/DC-DC 
Ground 
DC-DC Switcher Output 
Supply for the LoRa Radio 
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XRESVDDFilterInternal Reset0.1uF
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
53 
54 
VBAT_DIO 
DIO2 
SWIM 
NRST 
LCD_COM0 
LCD_COM1 
LCD_COM2 
VDDA 
VREFP 
UART1_RX 
UART1_TX 
VLCD 
LCD_SEG0 
LCD_SEG1 
LCD_SEG2 
LCD_SEG3 
LCD_COM3 
LCD_SEG4 
LCD_SEG5 
UART0_RX 
UART0_TX 
VDDD1 
LCD_SEG6 
LCD_SEG7 
LCD_SEG8 
LCD_SEG9 
VDDD2 
SPI_MISO 
SPI_MOSI 
SPI_SCK 
SPI_NSS 
LCD_SEG10 
LCD_SEG11 
LCD_SEG12 
LCD_SEG13 
LCD_SEG14 
LCD_SEG15 
LCD_SEG16 
GPIO1 
GPIO0 
LCD_SEG17 
I2C_SDA 
I2C_SCL 
P 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
P 
I 
I/O 
I/O 
I 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I 
I 
P 
I/O 
I/O 
I/O 
I/O 
P 
I 
I 
I 
I 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
I/O 
ASR Microelectronics Confidential 
Digital I/O supply voltage 
Multipurpose digital I/O-RF switch control 
SWIM download pin 
External reset pin 
LCD Common pin 0 
LCD Common pin 1 
LCD Common pin 2 
Power supply for MCU analog section 
VREFP for ADC 
UART1 RX pin, wake up UART. 
UART1 TX pin, wake up UART. 
VLCD voltage input 
LCD Segment pin 0 
LCD Segment pin 1 
LCD Segment pin 2 
LCD Segment pin 3 
LCD Common pin 3 
LCD Segment pin 4 
LCD Segment pin 5 
UART0 RX pin, wake up UART. 
UART0 TX pin, wake up UART. 
Power supply for MCU digital section 
LCD Segment pin 6 
LCD Segment pin 7 
LCD Segment pin 8 
LCD Segment pin 9 
Power supply for MCU digital section 
SPI slave output, can be external SPI 
SPI slave input, can be external SPI 
SPI clock, can be external SPI 
SPI slave select, can be external SPI 
LCD Segment pin 10 
LCD Segment pin 11 
LCD Segment pin 12 
LCD Segment pin 13 
LCD Segment pin 14 
LCD Segment pin 15 
LCD Segment pin 16 
SPI2 NSS 
MCU GPIO 
LCD Segment pin 17 
I2C SDA pin 
I2C SCL pin 
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