ESP-8285 Product Instructions Version V1.
About this manual This manual specifically addresses the product characteristics, basic parameters, pin layout and definitions of the ESP-8285 module, RF finger, Each party such as mark, dimension diagram, peripheral circuit diagram and module placement shall talk about the parameters and use method of the module Clearly, contain the following sections.
Release Notes Date Title Release Notes Prepared by 2019.02.14 V1.0 First Release Wang Pengshuai Audit Attention Due to the upgrade of product version or other reasons, the contents of this manual may be changed. Henan Yuntuo Intelligent Technology Co., Ltd. Reserves the right to modify the contents of this manual without any notice or prompt. All representations, information and recommendations in this specification do not constitute any warranty, express or implied.
ETOR_2019/02/14 1. Product Profile The ESP-8285 is an ultra-low power Wi-Fi module based on the Lexin ESP8285, ESP8285 incorporates industry-leading TensilicaL106 ultra-low power 32-bit miniature in smaller packages MCU.
ETOR_2019/02/14 2. Product display The ESP-8285 single channel switch module uses ceramic antennas. Figure 1.
ETOR_2019/02/14 Product characteristics 3.3 VDC power supply, power supply current not less than 300mA; Built-in TensilicaL106 ultra-low power 32-bit micro MCU, 80MHz and 160MHz main frequency support, support RTOS; Supports wireless 802.11 b/g/n standards; The contains a 10-bit high accuracy ADC. Supports the UART/GPIO/ADC/PWM/IIC interface; Wi-Fi @ 2.4 GHz, supports WPA/WPA2 security mode; +20.5 dBm output power in 802.
ETOR_2019/02/14 3. Electrical characteristics 3.1 Rated parameters Conditions: VDD=3. 3V ± 10%, GND=0 V; At room temperature. Table 1. Specification of Rating Parameters Type Parameters Model ESP-8285 Main chip ESP8285 Hardware Interface UART, GPIO, PWM, ADC, IIC Operating voltage 3.0 V-3.6 V; Supply current > 300mA; Typical 3.
ETOR_2019/02/14 3.2 WI-FI parameters Conditions: VDD=3. 3V ± 10%, GND=0 V; At room temperature. Table 2. Wi-Fi Parameter Description Type Parameters Wireless Standard IEEE 802.11 b/g/n Frequency Range 2.4 GHz-2.5 GHz (2400M-2483.5 M) 802.11 b: +20 ± 2 dBm @ 11Mbps Wi-Fi parameters Transmit power 802.11 g: +17 ± 2 dBm @ 54Mbps 802.11 n: +14 ± 2 dBm (@ HT20, MCS7) 802.11 b:-91dBm (@ 11Mbps, CCK) Reception sensitivity 802.11 g:-75dBm (@ 54Mbps, OFDM) 802.
ETOR_2019/02/14 4. Pin Definitions The ESP-8285 module provides a single-channel switch control interface, a Wi-Fi LED interface, and a UART serial port. Figure 2. Module Pin Front Arrangement Figure 3. Module Pin Back Arrangement Figure Figure 4.
ETOR_2019/02/14 Table 3. Pin Definitions and Function Descriptions Pin Name Function 1 ANT Wi-Fi Antenna 2 ADC ADC interface, 0-1V input range 3 EN Chip enable 4 GPIO16 GPIO16 5 GPIO14 GPIO14 6 GPIO12 GPIO12: Relay switch, active high 7. GPIO13 GPIO13: Wi-Fi status indicator lamp, connected to LED lamp series current limiting 8 GPIO15 GPIO15 9 GPIO2 GPIO2: UART1_TX available for burn-write flash memory 10.
ETOR_2019/02/14 5. Function description 5.1 Module Function Description The ESP-8285 module can be used as a single-channel switching device, either locally or remotely via APP. The following is a functional description: 1. Distribution network mode: AP configuration mode. Press the key (I00 pull-down, default high) for more than 5s to enter AP distribution network mode. 2.
1. Join that configure router to connect to the Internet; 2, connecte that scheduling serv to obtain the information of the longconnected cloud server; 3. Connecte to a long-connected cloud server; 4. Registration of equipment, bound to the Weiyu Wanlian account; 5. Obtain equipment application parameters and keep them online. Each of the above steps has a backoff policy and a reconnection mechanism when the connection/acquisition fails. Make sure the equipment is stable and real-time online. 5.
ETOR_2019/02/14 6. Radio frequency indicators Conditions: VDD=3. 3V ± 10%, GND=0 V; At room temperature. Table 4. Description of RF metrics Description Minimum Usually Maximum Unit Input Frequency 2412 - 2484 MHz Output Resistance - 39 +j6 - A) The fact that Input reflection - - -10 DB Output Power of PA at 72.2 Mbps 15.5 16.5 17.5 DBm Output Power for PA in 802.11 b Mode 19.5 20.5 21.
ETOR_2019/02/14 7. Dimension drawing Figure 4.
ETOR_2019/02/14 8. Schematic diagram of peripheral design Figure 5. Peripheral Circuit Schematic The IO0/IO2/IO15/EN and RST pins of the module are internally pulled up and can be powered directly for operation.
ETOR_2019/02/14 9. Module placement guide The ESP-8285 module can be soldered to the PCB backplane. For optimum RF performance of the end product, please note that the placement of the module on the backplane is designed in a reasonable manner in accordance with this guide. The module uses 2.4 GWi-F The arrangement of the antenna outside the board frame or along the board edge and hollowed out below (at least 5.
ETOR_2019/02/14 Guide diagram for placement of modules: Scenario 1: Single module, no backplanScenario 2: Antenna outside the frame Scenario 3: The antenna is placed along the edge of the plate and hollowed out below the plate.
Disclaimers and copyright notices The information in this document, including the URL address for reference, is subject to change without prior notice. The Documentation is provided "as is" without any warranty, including any warranty of merchantability, fitness for a particular purpose or non-infringing nature, and any warranty referred to elsewhere in any proposal, specification or sample.
FCC Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
