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Summary of Contents for Ebyte E49-900M20S
- Page 1 成都亿佰特电子科技有限公司 E49-900M20S 产品规格书 E49-900M20S User manual 868MHz/915MHz SMD wireless modules Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Page 2: Table Of Contents
6.3 BER(Bit Error Rate) is high..........................8 7 Welding instruction..............................9 7.1 Reflow soldering temperature.......................... 9 7.2 Reflow soldering curve.............................9 8 Related products................................ 10 9 Antenna guide................................10 9.1 Antenna recommendation..........................10 Revision history................................11 About us..................................11 Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 3: Disclaimer
E49-900M20S user manual Disclaimer EBYTE reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this document or any part thereof without the express permission of EBYTE is strictly prohibited. -
Page 4: Chapter 1 Introduction
1.1 Brief introduction E49-900M20S is a cost-effective wireless data transmission module launched by Chengdu Ebyte. It is A pure hardware module based on CMT2300A. E49-900M20S Supports the maximum transmission power of 20dBm, users can set a lower output power , thus saving power consumption.The module works in the 850MHz ~ 930MHz frequency... -
Page 5: Chapter 2 Specification And Parameters
-116 Main parameters Description Remark Test condition：clear and open area, antenna height: 2.5m，air Reference distance data rate 2.4kbps Crystal Oscillator 26MHz Package Communication interface Size 20*14mm IPEX/stamp Antenna 50 ohm impedance hole Weight 1.2±0.1g Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 6: Chapter 3 Size And Pin Definition
Configurable multi-function IO port（see CMT2300A manual for details） Power supply +3.3V Ground Ground SCLK SPI clock pin SDIO DI/O SPI data pin SPI register accesser FCSB SPI FIFO accesser Ground Ground RF module stamp hole interface，impedance 50Ω Ground Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 7: Chapter 4 Basic Operation
4.2 Programming The core of this module is CMT2300A，its driving method is SPI，the user can operate according to the CMT2300A chip manual； GPIO1/GPIO2/GPIO3 are general IO port, see CMT2300A manual for details； Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 8: Chapter 5 Basic Application
Chengdu Ebyte Electronic Technology Co.,Ltd. E49-900M20S user manual Chapter 5 Basic application 5.1 Basic circuit Figure 5-1 circuit Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 9: Faq
Poor power supply may cause messy code. Make sure that the power supply is reliable; The extension line and feeder quality are poor or too long, so the bit error rate is high. Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 10: Welding Instruction
Time（tL）Maintained Above（TL） 60-90 sec 30-90 sec Peak temperature（Tp） 220-235℃ 230-250℃ Aveage ramp-down rate（Tp to Tsmax） 6℃/second max 6℃/second max Time 25℃ to peak temperature 6 minutes max 8 minutes max 7.2 Reflow soldering curve Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 11: Related Products
Frequency Gain Size Cable Model No. Type Interface Function feature Rubber Rubber TX868-JZLW-15 868M IPEX-1 antenna,Omni-directional antenna antenna Rubber Rubber TX915-JZLW-15 915M IPEX-1 antenna,Omni-directional antenna antenna flexible TX915-FPC-4510 915M IPEX flexible antenna antenna Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 12: Revision History
About us Technical support: support@cdebyte.com Documents and RF Setting download link: www.ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com Phone: +86 028-61399028 Web: www.ebyte.com Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China...