| submitted | available | document details (if available) | source link |
|---|---|---|---|
| July 11 2019 | July 11 2019 |
| various | User Manual | Users Manual | 507.91 KiB | July 11 2019 |
ESP32-S2-WROVER User Manual C O NFIDENTIAL Prelease version 0.1 Espressif Systems Copyright 2019 www.espressif.com About This Document This document provides the specifications for the ESP32-S2-WROVER module. Certification Revision History For revision history of this document, please refer to the last page. Disclaimer and Copyright Notice Documentation Change Notification Download certificates for Espressif products from www.espressif.com/en/certificates. Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe at www.espressif.com/en/subscribe. C O NFIDENTIAL Information in this document, including URL references, is subject to change without notice. THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABIL-
ITY, NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. All liability, including liability for infringement of any proprietary rights, relating to use of information in this docu-
ment is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is a registered trademark of Bluetooth SIG. All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright 2019 Espressif Inc. All rights reserved. Espressif Systems 2 ESP32-S2-WROVER User Manual V0.1 1. Module Overview 1. Module Overview 1.1 Features MCU Hardware Wi-Fi Certification 802.11 b/g/n 128 KB ROM 2 MB PSRAM 320 KB SRAM 4 MB SPI flash 16 KB SRAM in RTC 40 MHz crystal oscillator 0.4 s guard interval support Dimensions: (18 31 3.3) mm Bit rate: 802.11n up to 150 Mbps LX7 microprocessor, up to 240 MHz Green certification: RoHS/REACH A-MPDU and A-MSDU aggregation Operating voltage/Power supply: 3.0 ~ 3.6 V ESP32-S2 embedded, Xtensa single-core 32-bit Operating temperature range: 40 ~ 85 C Interfaces: GPIO, SPI, LCD, UART, I2C, I2S, Cam-
era interface, IR, pulse counter, LED PWM, USB OTG 1.1, ADC, DAC, touch sensor, temperature sensor C O NFIDENTIAL ESP32-S2-WROVER is a powerful, generic Wi-Fi MCU module that has a rich set of peripherals. This module is an ideal choice for a wide variety of application scenarios relating to Internet of Things (IoT), wearable electronics and smart home. This module is provided in two versions: one with a PCB antenna, the other with an Dipole antenna. ESP32-S2-WROVER features a 4 MB external SPI flash and an additional 2 MB SPI Pseudo static RAM (PSRAM). The information in this datasheet is applicable to both modules. The ordering information on the two variants of ESP32-S2-WROVER is listed as follows:
Operating frequency range: 2412 ~ 2462 MHz Module ESP32-S2-WROVER (PCB) ESP32-S2-WROVER-I (Dipole) Notes:
The module with various capacities of flash or flash is available for custom order. Table 1: ESP32-S2-WROVER Ordering Information
(18.000.10)(31.000.10)(3.300.10) 1.2 Description PSRAM Module dimensions (mm) HTOL/HTSL/uHAST/TCT/ESD Chip embedded ESP32-S2 4 MB 2 MB Flash Test At the core of this module is ESP32-S2 *, an Xtensa 32-bit LX7 CPU that operates at up to 240 MHz. The user Espressif Systems 3 ESP32-S2-WROVER User Manual V0.1 1. Module Overview can power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32-S2 integrates a rich set of peripherals, ranging from SPI, IS, UART, IC, LED PWM, ADC, DAC, touch sensor, temperature sensor, as well as up to 43 GPIOs. It also includes a full-speed USB On-The-Go (OTG) interface to enable USB communication. 1.3 Applications USB Devices Mesh Network Smart Building Smart Agriculture Audio Applications Image Recognition Wi-Fi-enabled Toys Speech Recognition Industrial Automation Health Care Applications Over-the-top (OTT) Devices Cameras for Video Streaming Generic Low-power IoT Sensor Hub Generic Low-power IoT Data Loggers Note:
* For more information on ESP32-S2, please refer to ESP32-S2 Datasheet. C O NFIDENTIAL Retail & Catering Applications Smart Home Control Panel Smart POS Machines Wearable Electronics Home Automation Espressif Systems 4 ESP32-S2-WROVER User Manual V0.1 LIST OF TABLES List of Tables Transmitter Characteristics 3 10 11 13 13 13 14 14 15 15 15 ESP32-S2-WROVER Ordering Information Pin Definitions Strapping Pins Absolute Maximum Ratings Recommended Operating Conditions DC Characteristics (3.3 V, 25 C) Current Consumption Depending on RF Modes Current Consumption Depending on Work Modes 1 2 3 4 5 6 7 8 9 Wi-Fi RF Standards 10 11 Receiver Characteristics C O NFIDENTIAL Espressif Systems 5 ESP32-S2-WROVER User Manual V0.1 LIST OF FIGURES List of Figures 1 2 3 4 5 6 7 8 9 17 18 19 20 21 Block Diagram Pin Layout of ESP32-S2-WROVER (Top View) ESP32-S2-WROVER Schematics ESP32-S2-WROVER Peripheral Schematics ESP32-S2-WROVER Physical Dimensions Recommended PCB Land Pattern Reflow Profile C O NFIDENTIAL Espressif Systems 6 ESP32-S2-WROVER User Manual V0.1 3. Pin Definitions 3. Pin Definitions 3.1 Pin Layout C O NFIDENTIAL Note:
The pin diagram shows the approximate location of pins on the module. For the actual mechanical diagram, please refer to Figure 7.1 Physical Dimensions. Figure 2: Pin Layout of ESP32-S2-WROVER (Top View) 3.2 Pin Description ESP32-S2-WROVER has 42 pins. See pin definitions in Table 2. Espressif Systems 7 ESP32-S2-WROVER User Manual V0.1 PCB AntennaGNDENIO46IO45RXD0TXD0IO42IO41IO40IO39IO38IO37IO36IO35IO34IO331234567891011121314151642414039383736353433323130292827GND3V3IO0IO1IO2IO3IO4IO5IO6IO7IO8IO9IO10IO11IO12IO1343 GND171819IO14IO15IO16202122IO17IO18IO19232425IO20IO21IO2626GND 3. Pin Definitions Table 2: Pin Definitions Type P P Function Ground Power supply No. 1 2 3 4 5 6 7 8 9 10 11 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 Name GND 3V3 IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7 IO8 IO9 IO10 IO11 IO12 IO13 IO14 IO15 IO16 IO17 IO18 IO19 IO20 IO21 IO26 GND IO33 IO34 IO35 IO36 IO37 IO38 IO39 IO40 IO41 IO42 TXD0 RXD0 IO45 IO46 I/O/T RTC_GPIO0, GPIO0 I/O/T RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0 I/O/T RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1 I/O/T RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2 I/O/T RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3 I/O/T RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4 I/O/T RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5 I/O/T RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6 I/O/T RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7 I/O/T RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD I/O/T RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 I/O/T RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 I/O/T RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 I/O/T RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 I/O/T RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS I/O/T RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P I/O/T RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N I/O/T RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1 I/O/T RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3 I/O/T RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
I/O/T RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+
I/O/T RTC_GPIO21, GPIO21 I/O/T SPICS1, GPIO26 C O NFIDENTIAL I/O/T SPIIO4, GPIO33, FSPIHD I/O/T SPIIO5, GPIO34, FSPICS0 I/O/T SPIIO6, GPIO35, FSPID I/O/T SPIIO7, GPIO36, FSPICLK I/O/T SPIDQS, GPIO37, FSPIQ I/O/T GPIO38, FSPIWP I/O/T MTCK, GPIO39, CLK_OUT3 I/O/T MTDO, GPIO40, CLK_OUT2 I/O/T MTDI, GPIO41, CLK_OUT1 I/O/T MTMS, GPIO42 I/O/T U0TXD, GPIO43, CLK_OUT1 I/O/T U0RXD, GPIO44, CLK_OUT2 I/O/T GPIO45 GPIO46 High: on, enables the chip. Low: off, the chip powers off. Note: Do not leave the EN pin floating. EN 41 Ground P I I Espressif Systems 8 ESP32-S2-WROVER User Manual V0.1 3. Pin Definitions Name GND No. 42 Type P Function Ground Notice:
GPIO. GPIO0 = IO0 GPIO46 = IO46 GPIO45 = IO45 3.3 Strapping Pins For peripheral pin configurations, please refer to ESP32-S2 Datasheet. By default, IO26 is connected to the CS side of the PSRAM. If PSRAM is not a must, IO26 can be used as a regular Software can read the values of corresponding bits from register GPIO_STRAPPING. ESP32-S2 has three strapping pins: GPIO0, GPIO45, GPIO46. The pin-pin mapping between ESP32-S2 and the module is as follows, which can be seen in Chapter 5 Schematics:
During the chips system reset (power-on-reset, RTC watchdog reset, brownout reset, analog super watchdog reset, and crystal clock glitch detection reset), the latches of the strapping pins sample the voltage level as strapping bits of 0 or 1, and hold these bits until the chip is powered down or shut down. C O NFIDENTIAL IO0, IO45 and IO46 are connected to the internal pull-up/pull-down. If they are unconnected or the connected external circuit is high-impedance, the internal weak pull-up/pull-down will determine the default input level of these strapping pins. To change the strapping bit values, users can apply the external pull-down/pull-up resistances, or use the host MCUs GPIOs to control the voltage level of these pins when powering on ESP32-S2. Booting Mode SPI Boot 1 Dont-care Refer to Table 3 for a detailed boot-mode configuration of the strapping pins. After reset, the strapping pins work as normal-function pins. Download Boot 0 0 Default Pull-up Pull-down Enabling/Disabling ROM Code Print During Booting 3 4 Default Pull-down Enabled See the fourth note Disabled See the fourth note Table 3: Strapping Pins Default Pull-down VDD_SPI Voltage 1 Pin IO0 IO46 Pin IO45 2 1.8 V 1 3.3 V 0 Pin IO46 Espressif Systems 9 ESP32-S2-WROVER User Manual V0.1 3. Pin Definitions Note:
1. Firmware can configure register bits to change the settings of VDD_SDIO Voltage. 2. Internal pull-up resistor (R1) for IO45 is not populated in the module, as the flash and SRAM in ESP32-S2-WROVER work at 3.3 V by default (output by VDD_SPI). Please make sure IO45 will not be pulled high when the module is powered up by external circuit. 4. When eFuse UART_PRINT_CONTROL value is:
3. ROM code can be printed over TXD0 (by default) or DAC_1 (IO17), depending on the eFuse bit. 0, print is normal during boot and not controlled by IO46. 1 and IO46 is 0, print is normal during boot; but if IO46 is 1, print is disabled. 2 and IO46 is 0, print is disabled; but if IO46 is 1, print is normal. 3, print is disabled and not controlled by IO46. C O NFIDENTIAL Espressif Systems 10 ESP32-S2-WROVER User Manual V0.1 4. Electrical Characteristics 4. Electrical Characteristics 4.1 Absolute Maximum Ratings 3.6 V C 3.6 150 4.3 DC Characteristics (3.3 V, 25 C) 4.2 Recommended Operating Conditions Table 4: Absolute Maximum Ratings Symbol VDD33 TST ORE Typ Max Unit 3.3 Symbol VDD33 IV DD T Humidity Table 5: Recommended Operating Conditions Min Max Unit 0.3 40 Parameter Power supply voltage Storage temperature Min 3.0 V 0.5 A 40 85 C 85 %RH Parameter Power supply voltage Current delivered by external power supply Operating temperature Humidity condition C O NFIDENTIAL Parameter Pin capacitance High-level input voltage Low-level input voltage High-level input current Low-level input current High-level output voltage Low-level output voltage High-level source current (VDD = 3.3 V, VOH >=
2.64 V, PAD_DRIVER = 3) Low-level sink current (VDD = 3.3 V, VOL =
0.495 V, PAD_DRIVER = 3) Pull-up resistor Pull-down resistor Chip reset release voltage Chip reset voltage Unit pF V 0.25 VDD V nA nA 0.8 VDD V V k k V 0.25 VDD V Symbol CIN VIH VIL IIH IIL VOH VOL Table 6: DC Characteristics (3.3 V, 25 C) RP U RP D VIH_nRST VIL_nRST 0.75 VDD VDD + 0.3 0.75 VDD VDD + 0.3 0.1 VDD 0.3 Max 50 50 Min Typ 2 45 45 0.3 IOH IOL mA mA 40 28 Note:
VDD is the I/O voltage for a particular power domain of pins. Espressif Systems 11 ESP32-S2-WROVER User Manual V0.1 4. Electrical Characteristics 4.4 Current Consumption Characteristics With the use of advanced power-management technologies, ESP32-S2-WROVER can switch between different power modes. For details on different power modes, please refer to Section RTC and Low-Power Management in ESP32-S2 Datasheet. TX RX Peak Description Work mode Active (RF working) Table 7: Current Consumption Depending on RF Modes 310 mA 220 mA 200 mA 160 mA 63 mA 68 mA Table 8: Current Consumption Depending on Work Modes Average 190 mA 145 mA 135 mA 120 mA 63 mA 68 mA The current consumption measurements are taken with a 3.3 V supply at 25 C of ambient temperature at the RF port. All transmitters measurements are based on a 50% duty cycle. Note:
The current consumption figures for in RX mode are for cases when the peripherals are disabled and the CPU idle. 802.11b, 20 MHz, 1 Mbps, @21.14 dBm 802.11g, 20 MHz, 54 Mbps, @22.75dBm 802.11n, 20 MHz, MCS7, @23.06dBm 802.11n, 40 MHz, MCS7, @22.53 dBm 802.11b/g/n, 20 MHz 802.11n, 40 MHz C O NFIDENTIAL The current consumption figures in Modem-sleep mode are for cases where the CPU is powered on and the cache When Wi-Fi is enabled, the chip switches between Active and Modem-sleep modes. Therefore, current consump-
In Modem-sleep mode, the CPU frequency changes automatically. The frequency depends on the CPU load and 240 MHz 160 MHz Normal speed: 80 MHz CHIP_PU is set to low level, the chip is powered off. 21 mA 17 mA 14 mA 550 A 220 A The ULP co-processor is powered on. ULP sensor-monitored pattern The CPU is powered on RTC timer + RTC memory 10 A 5 A 0.5 A tion changes accordingly. the peripherals used. 7 A @1% duty RTC timer only Modem-sleep Power consumption (Typ) Work mode Deep-sleep Description Light-sleep Power off Note:
idle. During Deep-sleep, when the ULP co-processor is powered on, peripherals such as GPIO and IC are able to operate. The ULP sensor-monitored pattern refers to the mode where the ULP coprocessor or the sensor works periodi-
cally. When touch sensors work with a duty cycle of 1%, the typical current consumption is 7 A. Espressif Systems 12 ESP32-S2-WROVER User Manual V0.1 4. Electrical Characteristics 4.5 Wi-Fi RF Characteristics 4.5.1 Wi-Fi RF Standards Table 9: Wi-Fi RF Standards Name Operating frequency range note1 Wi-Fi wireless standard Data rate Antenna type 20 MHz 40 MHz Description 2412 ~ 2462 MHz IEEE 802.11b/g/n 11b: 1, 2, 5.5 and 11 Mbps 11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps 11n: MCS0-7, 72.2 Mbps (Max) 11n: MCS0-7, 150 Mbps (Max) PCB antenna, Dipole antenna 1. Device should operate in the frequency range allocated by regional regulatory authorities. Target operating frequency range is configurable by software. 2. For the modules that use Dipole antennas, the output impedance is 50 . For other modules without Dipole antennas, users do not need to concern about the output impedance. 4.5.2 Transmitter Characteristics Table 10: Transmitter Characteristics Parameter TX Power note1 Rate 11b, 1 Mbps 11g, 6 Mbps 11n, HT20, MCS0 11n, HT40, MCS0 1. Target TX power is configurable based on device or certification requirements. 4.5.3 Receiver Characteristics Table 11: Receiver Characteristics Parameter RX Sensitivity Rate 1 Mbps 2 Mbps 5.5 Mbps 11 Mbps 6 Mbps 9 Mbps Typ Unit 21.14 22.75 dBm 23.06 22.53 Unit dBm Typ 97 95 93 88 92 91 Espressif Systems 13 ESP32-S2-WROVER User Manual V0.1 4. Electrical Characteristics Parameter Unit Rate 12 Mbps 18 Mbps 24 Mbps 36 Mbps 48 Mbps 54 Mbps 11n, HT20, MCS0 11n, HT20, MCS1 11n, HT20, MCS2 11n, HT20, MCS3 11n, HT20, MCS4 11n, HT20, MCS5 11n, HT20, MCS6 11n, HT20, MCS7 11n, HT40, MCS0 11n, HT40, MCS1 11n, HT40, MCS2 11n, HT40, MCS3 11n, HT40, MCS4 11n, HT40, MCS5 11n, HT40, MCS6 11n, HT40, MCS7 11b, 1 Mbps 11b, 11 Mbps 11g, 6 Mbps 11g, 54 Mbps 11n, HT20, MCS0 11n, HT20, MCS7 11n, HT40, MCS0 11n, HT40, MCS7 11b, 11 Mbps 11g, 6 Mbps 11g, 54 Mbps 11n, HT20, MCS0 11n, HT20, MCS7 11n, HT40, MCS0 11n, HT40, MCS7 C O NFIDENTIAL Typ 89 87 84 80 76 75 92 88 85 83 79 75 74 72 89 86 83 80 76 72 71 69 5 5 5 0 5 0 5 0 35 31 14 31 13 19 8 Adjacent Channel Rejection RX Maximum Input Level dBm dB Espressif Systems 14 ESP32-S2-WROVER User Manual V0.1 7. Physical Dimensions and PCB Land Pattern 7. Physical Dimensions and PCB Land Pattern 7.1 Physical Dimensions C O NFIDENTIAL To ensure the power supply to the ESP32-S2 chip during power-up, it is advised to add an RC delay circuit at the EN pin. The recommended setting for the RC delay circuit is usually R = 10 k and C = 0.1 F. However, specific parameters should be adjusted based on the power-up timing of the module and the power-up and reset sequence timing of the chip. For ESP32-S2s power-up and reset sequence timing diagram, please refer to Section Power Scheme in ESP32-S2 Datasheet. Soldering the EPAD to the ground of the base board is not a must, though doing so can get optimized thermal performance. If users do want to solder it, they need to ensure that the correct quantity of soldering paste is applied. Figure 5: ESP32-S2-WROVER Physical Dimensions Note:
Espressif Systems 15 ESP32-S2-WROVER User Manual V0.1 31.0018.000.803.301.500.450.900.8515.4510.194.004.002.250.45ESP32-S2-WROVER DimensionsUnit: mmTolerance: +/-0.10mmTop ViewSide ViewBottom View6.308.3523.1015.8419.3010.441.501.000.501.000.500.850.900.901.002.25 7. Physical Dimensions and PCB Land Pattern 7.2 Recommended PCB Land Pattern C O NFIDENTIAL Figure 6: Recommended PCB Land Pattern Espressif Systems 16 ESP32-S2-WROVER User Manual V0.1 42x0.9042x1.500.500.501.002.251.501.5015.45Antenna Area18.0031.00Unit: mm6.30Copper11726424.104.101.100.401.100.40Via for thermal pad7.81 8. Product Handling 8. Product Handling 8.1 Storage Condition 8.2 ESD Air discharge: 8000 V Contact discharge: 6000 V Human body model (HBM): 2000 V Charged-device model (CDM): 500 V 8.3 Reflow Profile MSL 3 and floorlife: 168 hrs 30 C/60%RH The products sealed in Moisture Barrier Bag (MBB) should be stored in a noncondensing atmospheric environment of < 40 C/90%RH. C O NFIDENTIAL Figure 7: Reflow Profile Espressif Systems 17 ESP32-S2-WROVER User Manual V0.1 501500251 ~ 3/s0200250200-1 ~ -5/sCooling zone10021750100250Reow zone 217 60 ~ 90sTemperature ()Preheatingzone150 ~ 20060 ~ 120sRamp-up zonePeak Temp.235 ~ 250Soldering time> 30sTime (sec.)Ramp-up zone Temp.: <150 Time: 60 ~ 90s Ramp-up rate: 1 ~ 3/sPreheating zone Temp.: 150 ~ 200 Time: 60 ~ 120s Ramp-up rate: 0.3 ~ 0.8/sReow zone Temp.: >217 60 ~ 90s; Peak Temp.: 235 ~ 250 (<245 recommended) Time: 30 ~ 70sCooling zone Peak Temp. ~ 180 Ramp-down rate: -1 ~ -5/sSolder Sn&Ag&Cu Lead-free solder (SAC305) 9. MAC Addresses and eFuse 9. MAC Addresses and eFuse The eFuse in ESP32-S2 has been burnt into 48-bit mac_address. The actual addresses the chip uses in station and AP modes correspond to mac_address in the following way:
Station mode: mac_address AP mode: mac_address + 1 There are seven blocks in eFuse for users to use. Each block is 256 bits in size and has independent write/read disable controller. Six of them can be used to store encrypted key or user data, and one is only used to store user data. C O NFIDENTIAL Espressif Systems 18 ESP32-S2-WROVER User Manual V0.1 Revision History Revision History Date 2019.09 Version V0.1 Release notes Preliminary release FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 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. C O NFIDENTIAL Espressif Systems 19 ESP32-S2-WROVER User Manual V0.1 Regulatory Module Integration Instructions 2.2 List of applicable FCC rules This device complies with part 15.247 of the FCC Rules. 2.3 Summarize the specific operational use conditions This module can be used in household electrical appliances as well as lighting equipments. The input voltage to the module should be nominally 3.0~3.6 VDC ,typical value 3.3VDC and the ambient temperature of the module should not exceed 85. This module using two kinds of antennas ,PCB antenan with maximum gain is 3.40dBi . Dipole antenan with maximum gain is 2.33dBi .Other antenna arrangement is not covered by this certification.The antenna is not field replaceable. If the antenna needs to be changed, the certification should be re-applied. 2.4 Limited module procedures Not applicable 2.5 Trace antenna designs Not applicable 2.6 RF exposure considerations This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. If the device built into a host as a portable usage, the additional RF exposure evaluation may be required as specified by 2.1093. 2.7 Antennas Module contains one PCB antenna and Dipole antenna. 2.8 Label and compliance information The outside of final products that contains this module device must display a label referring to the enclosed module. This exterior label can use wording such as: Contains Transmitter Module FCC ID: 2AC7Z-ESP32S2WROVER ,or Contains FCC ID: 2AC7Z-ESP32S2WROVER , Any similar wording that expresses the same meaning may be used. 2.9 Information on test modes and additional testing requirements a) The modular transmitter has been fully tested by the module grantee on the required number of channels, modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings. It is recommended that the host product manufacturer, installing the modular transmitter, perform some investigative measurements to confirm that the resulting composite system does not exceed the spurious emissions limits or band edge limits (e.g., where a different antenna may be causing additional emissions). b) The testing should check for emissions that may occur due to the intermixing of emissions with the other transmitters, digital circuitry, or due to physical properties of the host product (enclosure). This investigation is especially important when integrating multiple modular transmitters where the certification is based on testing each of them in a stand-alone configuration. It is important to note that host product manufacturers should not assume that because the modular transmitter is certified that they do not WRG1 User Manual have any responsibility for final product compliance. c) If the investigation indicates a compliance concern the host product manufacturer is obligated to mitigate the issue. Host products using a modular transmitter are subject to all the applicable individual technical rules as well as to the general conditions of operation in Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of the host product will be obligated to stop operating the device until the interference has been corrected Below are steps for TX verification wpriv mp_start //enter MP mode iwpriv mp_channel 1 //set channel to 1 . 2, 3, 4~11 etc. iwpriv mp_bandwidth 40M=0,shortGI=0 //40M=0 set 20M mode and long GI 40M=1 set 40M mode iwpriv mp_ant_tx a //select antenna A for operation iwpriv mp_txpower patha=44,pathb=44 //set path A and path B Tx power level iwpriv mp_rate 108 //set OFDM data rate to 54Mbps,ex:
CCK 1M = 2, CCK 5.5M = 11, KK, OFDM54M = 108 N Mode: MCS0 = 128, MCS1
= 129..etc. iwpriv mp_ctx background,pkt //start packet continuous Tx iwpriv mp_ctx stop //stop continuous Tx 2.10 Additional testing, Part 15 subpart B disclaimer The final host / module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device. The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. Frequency spectrum to be investigated For host products with certified modular transmitter, the frequency range of investigation of the composite system is specified by rule in Sections 15.33(a)(1) through (a)(3), or the range applicable to the digital device, as shown in Section 15.33(b)(1), whichever is the higher frequency range of investigation. Operating the host product When testing the host product, all the transmitters must be operating.The transmitters can be enabled by using publicly-available drivers and turned on, so the transmitters are active. In certain conditions it might be appropriate to use a technology-specific call box
(test set) where accessory devices or drivers are not available. When testing for emissions from the unintentional radiator, the transmitter shall be placed in the receive mode or idle mode, if possible. If receive mode only is not possible then, the radio shall be passive (preferred) and/or active scanning. In these cases, this would need to enable activity on the communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator circuitry is enabled. Testing laboratories may need to add attenuation or filters depending on the signal strength of any active beacons (if applicable) from the enabled radio(s). See ANSI C63.4, ANSI C63.10 and ANSI C63.26 for further general testing details.
This product uses the FCC Data API but is not endorsed or certified by the FCC