User Manual V1.0 2016.3.15 Table Of Contents 1. Preambles ............................................................................................................................................... 3 1.1. Features ......................................................................................................................................... 4 1.2. Parameters .................................................................................................................................... 5 2. Pin Descriptions ................................................................................................................................... 6 2.1. Interfaces ....................................................................................................................................... 7 2.2. Pin Mode ....................................................................................................................................... 9 3. Packaging and Dimension ................................................................................................................... 9 3.1. Packaging ..................................................................................................................................... 10 3.2. Soldering temperature ................................................................................................................ 10 4. Absolute Maximum Ratings ................................................................................................................. 11 4.1Recommended Operating Conditions .......................................................................................... 11 4.2.AT commend Testing .................................................................................................................... 12 4.3.AT commend ................................................................................................................................ 12 4.3.1.AT Command Description ................................................................................................. 12 4.3.2.Basic AT Command Set ...................................................................................................... 13 5.Notes ...................................................................................................................................................... 18 2 1. Preambles ESP-07S WiFi module is developed by Wireless-tagCo.,Ltd, core processor ESP8266 in smaller sizes of the module encapsulates Tensilica L106 integrates industry-leading ultra low power 32-bit MCU micro, with the 16-bit short mode, clock speed support 80 MHz, 160 MHz, supports the RTOS, integrated Wi-Fi MAC/BB/RF/PA/LNA, on-board antennas. The module supports standard IEEE802.11 b/g/n agreement, complete TCP/IP protocol stack. Users can use the add modules to an existing device networking, or building a separate network controller. ESP8266 is high integration wireless SOCs, designed for space and power constrained mobile platform designers. It provides unsurpassed ability to embed Wi-Fi capabilities within other systems, or to function as a standalone application, with the lowest cost, and minimal space requirement. Figure 1 ESP8266EX Functional Block Diagram ESP8266EX offers a complete and self-contained Wi-Fi networking solution; it can be used to host the application or to offload Wi-Fi networking functions from another application processor. When ESP8266EX hosts the application, it boots up directly from an external flash. In has integrated cache to improve the performance of the system in such applications. Alternately, serving as a Wi-Fi adapter, wireless internet access can be added to any micro controllerbased design with simple connectivity (SPI/SDIO or I2C/UART interface). ESP8266EX is among the most integrated WiFi chip in the industry; it integrates the antenna switches, RF balun, power amplifier, low noise receive amplifier, filters, power management modules, it requires minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area. 3 ESP8266EX also integrates an enhanced version of Tensilicas L106 Diamond series 32-bit processor, with on-chip SRAM, besides the Wi-Fi functionalities. ESP8266EX is often integrated with external sensors and other application specific devices through its GPIOs; codes for such applications are provided in examples in the SDK. 1.1. Features 802.11 b/g/n Integrated low power 32-bit MCU Integrated 10-bit ADC Integrated TCP/IP protocol stack Integrated TR switch, balun, LNA, power amplifier and matching network Integrated PLL, regulators, and power management units Supports antenna diversity Wi-Fi 2.4 GHz, support WPA/WPA2 Support STA/AP/STA+AP operation modes Support Smart Link Function for both Android and iOS devices SDIO 2.0, (H) SPI, UART, I2C, I2S, IRDA, PWM, GPIO STBC, 1x1 MIMO, 2x1 MIMO A-MPDU & A-MSDU aggregation and 0.4s guard interval Deep sleep power <10uA, Power down leakage current < 5uA Wake up and transmit packets in < 2ms Standby power consumption of < 1.0mW (DTIM3) 4
+20dBm output power in 802.11b mode Operating temperature range -40C ~ 85C Comply with FCC rules part 15 subpart C requirements 1.2. Parameters Table 1 below describes the major parameters. Table 1 Parameters Categories Items Values WiFi Paramters Hardware Paramaters Software Parameters WiFi Protocles Frequency Range Peripheral Bus Operating Voltage Operating Current 802.11 b/g/n 2.4GHz-2.5GHz (2400M-2483.5M) UART/HSPI/I2C/I2S/Ir Remote Contorl GPIO/PWM 3.0~3.6V Average value: 80mA Operating Temperature Range
-40~125 Ambient Temperature Range Normal temperature Package Size External Interface Wi-Fi mode Security Encryption Firmware Upgrade Ssoftware Development Network Protocols 18mm*20mm*3mm N/A station/softAP/SoftAP+station WPA/WPA2 WEP/TKIP/AES UART Download / OTA (via network) /
download and write firmware via host Supports Cloud Server Development / SDK for custom firmware development IPv4, TCP/UDP/HTTP/FTP 5 User Configuration AT Instruction Set, Cloud Server, Android/iOS APP 2. Pin Descriptions There are altogether 16 pin counts, the definitions of which are described in Table 2 below. Figure 2 ESP-07S pinout Table 2 ESP-07S pin description Pin number Pin name function 1 2 3 4 5 6 RST ADC EN Reset module A/d conversion result. Input voltage range 0~1V, value range: 0~1024 Chip enable pin. Active high GPIO16 GPIO16; can be used to wake up the chipset from deep sleep mode GPIO14 GPIO14; HSPI_CLK GPIO12 GPIO12; HSPI_MISO 6 7 8 9 10 11 12 13 14 15 16 GPIO13 GPIO13; HSPI_MOSI; UART0_CTS VCC 3.3V power supply (VDD) GND GND GPIO15 GPIO15; MTDO; HSPICS; UART0_RTS GPIO2 GPIO2; UART1_TXD GPIO0 GPIO0 GPIO4 GPIO4 GPIO5 GPIO5 RXD0 UART0_RXD; GPIO3 TXD0 UART0_TXD; GPIO1 2.1. Interfaces Table 3 Descriptions of Interfaces Interface Pin Name Description HSPI PWM IO12(MISO), IO13(MOSI) IO14(CLK), IO15(CS) IO12(R), IO15(G), IO13(B) SPI Flash , display screen, and MCU can be connected using HSPI interface Currently the PWM interface has four channels, but users can extend the channels according to their own needs. PWM interface can be used to control LED lights, buzzers, relays, electronic machines, and so on. The functionality of Infrared remote control interface can be IR Remote Control IO14(IR_T), IO5(IR_R) implemented via software programming. NEC coding, modulation, and demodulation are used by this interface. The frequency of modulated carrier signal is 38KHz. 7 ESP8266EX integrates a 10-bit analog ADC. It can be used to test the power supply voltage of VDD3P3 (Pin3 and Pin4) and the input ADC TOUT power voltage of TOUT (Pin 6). However, these two functions cannot be used simultaneously. This interface is typically used in sensor products. I2C IO14(SCL), IO2(SDA) I2C interface can be used to connect external sensor products and display screens, etc. UART0:
TXD(U0TXD), RXD(U0RXD), IO15(RTS), IO13(CTS) UART1:
IO2(TXD) I2S Input IO12 (I2SI_DATA) ;
IO13 (I2SI_BCK );
IO14 (I2SI_WS);
Devices with UART interfaces can be connected with the module. Downloading: U0TXD+U0RXD or GPIO2+U0RXD Communicating: UART0: U0TXD, U0RXD, MTDO (U0RTS), MTCK
(U0CTS) Debugging: UART1_TXD (GPIO2) can be used to print debugging information. By default, UART0 will output some printed information when the device is powered on and is booting up. If this issue exerts influence on some specific applications, users can exchange the inner pins of UART when initializing, that is to say, exchange U0TXD, U0RXD with U0RTS, U0CTS. I2S interface is mainly used for collecting, processing, and I2S Output:
transmission of audio data. UART I2S IO15 (I2SO_BCK );
IO3 (I2SO_DATA);
IO2 (I2SO_WS ). 8 2.2. Pin Mode Mode UART Flash Boot Table 4 Pin Mode GPIO15 low low GPIO0 low high GPIO2 high high 3. Packaging and Dimension The external size of the module is 16mm*17mm*3mm, as is illustrated in Figure 4 below. The type of flash integrated in this module is an SPI flash, the capacity of which is 4 MB, and the package size of which is SOP8 208mil. Modules by IPEX interface to connect to an external antenna. Figure 3 Top View of ESP-07S WiFi Module Table 5 Dimension of ESP-07S WiFi Module width Height PAD Size(Bottom) Pin Pitch 17mm 3 mm 1 mm x 1.2 mm 2mm Length 16mm 9 3.1. Packaging ESP-07S a half hole patch package, PCB LAYOUT shown in the following figure:
Figure 5 RECOMMENDED PCB LAYOUT 3.2. Soldering temperature Note When welding module temperature not higher, recommended reflow curve shown in the following figure:
Figure 6 Recommended reflow soldering curves 10 4. Absolute Maximum Ratings Table 6 Absolute Maximum Ratings Rating Condition Storage Temperature Maximum Soldering Temperature Value
-40 to 125 260 Supply Voltage IPC/JEDEC J-STD-020
+3.0 to +3.6 4.1Recommended Operating Conditions Table 7 Recommended Operating Conditions Operating Condition Symbol Min Operating Temperature Supply voltage VDD
-40 3.0 Typ 20 3.3 Max 125 3.6 Unit V Unit V 11 4.2.AT commend Testing 1.Hardware connection As shown in Figure 7, ESP-07S via a serial port or USB serial port carriers connected to the computer, software tool through the serial port on the computer can be AT instruction test Figure 7 ESP-07S connect with computer 4.3.AT commend Espressif AT instruction set functions and methods of use AT commands set is divided into: Basic AT commands, WiFi related AT commands, TCP / IP AT 4.3.1.AT Command Description Table 8 Each Command set contains four types of AT commands. 12 Notes:
1. Not all AT Command has four commands. 2. [] = default value, not required or may not appear 3. String values require double quotation marks, for example:
AT+CWSAP="ESP756290","21030826",1,4 4. Baudrate = 115200 5. AT Commands has to be capitalized, and end with "/r/n"
4.3.2.Basic AT Command Set The ESP8266 wireless WiFi modules can be driven via the serial interface using the standard AT commands. Here is a list of some basic AT commands that can be used. Table9 basic AT commands 13 AT Test AT startup The type of this command is "executed". It's used to test the setup function of your wireless WiFi module. AT+RST Restart module 14 The type of this command is "executed". Its used to restart the module. AT+GMR View version info This AT command is used to check the version of AT commands and SDK that you are using, the type of which is "executed". AT+GSLP Enter deep-sleep mode This command is used to invoke the deep-sleep mode of the module, the type of which is "set". A minor adjustment has to be made before the module enter this deep sleep mode, i.e., connect XPD_DCDC with EXT_RSTB via 0R. 15 ATE AT commands echo This command ATE is an AT trigger command echo. It means that entered commands can be echoed back to the sender when ATE command is used. Two parameters are possible. The command returns
"OK" in normal cases and "ERROR" when a parameter other than 0 or 1 was specified. AT+RESTORE Factory reset This command is used to reset all parameters saved in flash (according to appendix), restore the factory default settings of the module. The chip will be restarted when this command is executed. Detailed instruction test, please refer to the Esp8266 AT Instruction Set, can be downloaded to shun official website 16 4.3.3 Antenna Specification Antenna Size:
Antenna Gain:
17 5.Notes 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 users authority to operate the equipment. Please notice that if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC ID: 2AUMD-ESP-07S any similar wording that expresses the same meaning may be used. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The module is limited to OEM installation ONLY. The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. The module is limited to installation in mobile application;
A separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and difference antenna configurations. There is requirement that the grantee provide guidance to the host manufacturer for compliance with Part 15B requirements. The end user manual shall include all required regulatory information/warning as shown in this manual, include:
This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body. 18