ESP32-S2-WROVER CO NF ID EN TI AL User Manual Prelease version 0.1 Espressif Systems Copyright © 2019 www.espressif.
About This Document This document provides the specifications for the ESP32-S2-WROVER module. Revision History TI AL For revision history of this document, please refer to the last page. Documentation Change Notification Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe at www.espressif.com/en/subscribe. Certification EN Download certificates for Espressif products from www.espressif.com/en/certificates.
1. Module Overview 1. Module Overview 1.1 Features MCU Hardware • Interfaces: GPIO, SPI, LCD, UART, I2 C, I2 S, Cam- • ESP32-S2 embedded, Xtensa® single-core 32-bit era interface, IR, pulse counter, LED PWM, USB LX7 microprocessor, up to 240 MHz OTG 1.1, ADC, DAC, touch sensor, temperature sensor TI AL • 128 KB ROM • 40 MHz crystal oscillator • 320 KB SRAM • 4 MB SPI flash • 16 KB SRAM in RTC • 2 MB PSRAM • Operating voltage/Power supply: 3.0 ~ 3.
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, I²S, UART, I²C, 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. Note: TI AL * For more information on ESP32-S2, please refer to ESP32-S2 Datasheet. 1.
LIST OF TABLES List of Tables ESP32-S2-WROVER Ordering Information 3 2 Pin Definitions 10 3 Strapping Pins 11 4 Absolute Maximum Ratings 13 5 Recommended Operating Conditions 13 6 DC Characteristics (3.
LIST OF FIGURES List of Figures Block Diagram 8 2 Pin Layout of ESP32-S2-WROVER (Top View) 9 3 ESP32-S2-WROVER Schematics 17 4 ESP32-S2-WROVER Peripheral Schematics 18 5 ESP32-S2-WROVER Physical Dimensions 19 6 Recommended PCB Land Pattern 20 7 Reflow Profile 21 CO NF ID EN TI AL 1 Espressif Systems 6 ESP32-S2-WROVER User Manual V0.
3. Pin Definitions 3. Pin Definitions 3.
3. Pin Definitions Table 2: Pin Definitions No.
3. Pin Definitions Name No. Type Function GND 42 P Ground Notice: • 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 GPIO. 3.3 Strapping Pins TI AL • For peripheral pin configurations, please refer to ESP32-S2 Datasheet. ESP32-S2 has three strapping pins: GPIO0, GPIO45, GPIO46.
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. 3. ROM code can be printed over TXD0 (by default) or DAC_1 (IO17), depending on the eFuse bit. 4.
4. Electrical Characteristics 4. Electrical Characteristics 4.1 Absolute Maximum Ratings Table 4: Absolute Maximum Ratings Parameter Min Max Unit VDD33 Power supply voltage –0.3 3.6 V TST ORE Storage temperature –40 150 °C 4.2 Recommended Operating Conditions TI AL Symbol Table 5: Recommended Operating Conditions Min Typ Max Unit 3.0 3.3 3.6 V Current delivered by external power supply 0.
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. 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.
4. Electrical Characteristics 4.5 Wi-Fi RF Characteristics 4.5.1 Wi-Fi RF Standards Table 9: Wi-Fi RF Standards Name Description Operating frequency range note1 2412 ~ 2462 MHz IEEE 802.11b/g/n Wi-Fi wireless standard 11b: 1, 2, 5.5 and 11 Mbps 20 MHz Data rate 11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps 11n: MCS0-7, 72.2 Mbps (Max) 40 MHz 11n: MCS0-7, 150 Mbps (Max) PCB antenna, Dipole antenna Antenna type 1. Device should operate in the frequency range allocated by regional regulatory authorities.
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7. Physical Dimensions and PCB Land Pattern 7. Physical Dimensions and PCB Land Pattern 7.1 Physical Dimensions ESP32-S2-WROVER Dimensions 8.35 0.90 15.45 1.00 0.90 Top View Side View 0.85 0.85 ID 1.50 2.25 0.45 15.84 0.45 EN 19.30 0.50 0.90 1.50 1.00 23.10 4.00 1.00 4.00 2.25 10.44 31.00 10.19 0.50 6.30 0.80 TI AL 3.30 18.00 Unit: mm Tolerance: +/-0.
7. Physical Dimensions and PCB Land Pattern 7.2 Recommended PCB Land Pattern 42x1.50 Antenna Area EN 42 4.10 17 CO 31.00 1.50 26 1.50 2.25 Espressif Systems 0.40 1.10 ID 0.50 NF 1.00 7.81 0.50 0.40 15.45 1.10 4.10 42x0.90 1 6.30 18.00 TI AL Unit: mm Via for thermal pad Copper Figure 6: Recommended PCB Land Pattern 16 ESP32-S2-WROVER User Manual V0.
8. Product Handling 8. Product Handling 8.1 Storage Condition The products sealed in Moisture Barrier Bag (MBB) should be stored in a noncondensing atmospheric environment of < 40 °C/90%RH. TI AL MSL 3 and floorlife: 168 hrs �30 °C/60%RH 8.2 ESD • Human body model (HBM): 2000 V • Charged-device model (CDM): 500 V • Air discharge: 8000 V EN • Contact discharge: 6000 V ID Temperature (℃) 8.3 Reflow Profile 250 Peak Temp.
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 TI AL disable controller.
Revision History Revision History Date Version Release notes 2019.09 V0.1 Preliminary release TI AL FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with part 15 of the FCC Rules.
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 .
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.
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 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.
general testing details.
