ESP32 S2 WROOM ESP32 S2 WROOM I - Espressif
ESP32 S2 WROOMESP32 S2 WROOM IDatasheetVersion 1.2Espressif SystemsCopyright 2020www.espressif.com
About This DocumentThis document provides the specifications for the ESP32-S2-WROOM and ESP32-S2-WROOM-I module.Document UpdatesPlease always refer to the latest version on ments.Revision HistoryFor revision history of this document, please refer to the last page.Documentation Change NotificationEspressif provides email notifications to keep customers updated on changes to technical documentation.Please subscribe at ad certificates for Espressif products from www.espressif.com/en/certificates.Disclaimer and Copyright NoticeInformation in this document, including URL references, is subject to change without notice. THIS DOCUMENTIS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OFMERCHANTABILITY, NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTYOTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE.All liability, including liability for infringement of any proprietary rights, relating to use of information in thisdocument is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual propertyrights are granted herein. The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetoothlogo is a registered trademark of Bluetooth SIG.All trade names, trademarks and registered trademarks mentioned in this document are property of theirrespective owners, and are hereby acknowledged.Copyright 2020 Espressif Systems (Shanghai) Co., Ltd. All rights reserved.
1 Module Overview1 Module Overview1.1 FeaturesMCUHardware ESP32-S2 embedded, Xtensa single-core Interfaces: GPIO, SPI, LCD, UART, I2C, I2S,32-bit LX7 microprocessor, up to 240 MHzCamera interface, IR, pulse counter, LED PWM,TWAITM (compatible with ISO 11898-1), USB 128 KB ROMOTG 1.1, ADC, DAC, touch sensor, temperaturesensor 320 KB SRAM 40 MHz crystal oscillator 16 KB SRAM in RTC 4 MB SPI flash Operating voltage/Power supply: 3.0 3.6 VWi Fi Operating temperature range: –40 85 C 802.11 b/g/n Dimensions: (18 31 3.3) mm Bit rate: 802.11n up to 150 MbpsCertification A-MPDU and A-MSDU aggregation Green certification: RoHS/REACH 0.4 µs guard interval support RF certification: FCC/CE-RED/SRRCTest Center frequency range of operating channel:2412 2484 MHz HTOL/HTSL/uHAST/TCT/ESD1.2 DescriptionESP32-S2-WROOM and ESP32-S2-WROOM-I are two powerful, generic Wi-Fi MCU modules that have a richset of peripherals. They are an ideal choice for a wide variety of application scenarios relating to Internet of Things(IoT), wearable electronics and smart home.ESP32-S2-WROOM comes with a PCB antenna, and ESP32-S2-WROOM-I with an IPEX antenna. They bothfeature a 4 MB external SPI flash. The information in this datasheet is applicable to both modules.The ordering information of the two modules is listed as follows:Table 1: Ordering InformationModuleESP32-S2-WROOM (PCB)ESP32-S2-WROOM-I (IPEX)Chip embeddedFlashModule dimensions (mm)ESP32-S24 MB(18.00 0.15) (31.00 0.15) (3.30 0.15)Notes:1. These modules can be shipped with different flash sizes.2. Modules that operate at higher temperature (–40 C 105 C) are available for order, embedded with 4 MB flash.3. For dimensions of the IPEX connector, please see Section 7.3.At the core of this module is ESP32-S2 *, an Xtensa 32-bit LX7 CPU that operates at up to 240 MHz. The chipEspressif Systems3ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
1 Module Overviewhas a low-power co-processor that can be used instead of the CPU to save power while performing tasks thatdo not require much computing power, such as monitoring of peripherals. ESP32-S2 integrates a rich set ofperipherals, ranging from SPI, I2S, UART, I2C, LED PWM, TWAITM , LCD, Camera interface, ADC, DAC, touchsensor, 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:* For more information on ESP32-S2, please refer to ESP32-S2 Datasheet.1.3 Applications Generic Low-power IoT Sensor Hub Smart Building Generic Low-power IoT Data Loggers Industrial Automation Cameras for Video Streaming Smart Agriculture Over-the-top (OTT) Devices Audio Applications USB Devices Health Care Applications Speech Recognition Wi-Fi-enabled Toys Image Recognition Wearable Electronics Mesh Network Home Automation Retail & Catering Applications Smart Home Control Panel Smart POS MachinesEspressif Systems4ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
ContentsContents1Module s42Block Diagram83Pin Definitions93.1Pin Layout93.2Pin Description103.3Strapping Pins114Electrical Characteristics134.1Absolute Maximum Ratings134.2Recommended Operating Conditions134.3DC Characteristics (3.3 V, 25 C)134.4Current Consumption Characteristics144.5Wi-Fi RF Characteristics154.5.1Wi-Fi RF Standards154.5.2Transmitter Characteristics154.5.3Receiver Characteristics155Schematics176Peripheral Schematics197Physical Dimensions and PCB Land Pattern207.1Physical Dimensions207.2Recommended PCB Land Pattern217.3U.FL Connector Dimensions228Product Handling238.1Storage Condition238.2ESD238.3Reflow Profile239MAC Addresses and eFuse2410 Learning Resources2510.1Must-Read Documents2510.2Must-Have Resources25Revision HistoryEspressif Systems265ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
List of TablesList of Tables1Ordering Information2Pin Definitions103Strapping Pins114Absolute Maximum Ratings135Recommended Operating Conditions136DC Characteristics (3.3 V, 25 C)137Current Consumption Depending on RF Modes148Current Consumption Depending on Work Modes149Wi-Fi RF Standards1510Transmitter Characteristics1511Receiver Characteristics16Espressif Systems36ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
List of FiguresList of Figures1ESP32-S2-WROOM Block Diagram82ESP32-S2-WROOM-I Block Diagram83Module Pin Layout (Top View)94ESP32-S2-WROOM Schematics175ESP32-S2-WROOM-I Schematics186Peripheral Schematics197Physical Dimensions208Recommended PCB Land Pattern219U.FL Connector Dimensions2210Reflow Profile23Espressif Systems7ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
2 Block Diagram2 Block Diagram40 MHzCrystal3V3AntennaRF WPVDD SPIENSPI FlashESP32-S2-WROOMFigure 1: ESP32 S2 WROOM Block Diagram40 MHzCrystal3V3AntennaRF WPVDD SPIENSPI FlashESP32-S2-WROOM-IFigure 2: ESP32 S2 WROOM I Block DiagramEspressif Systems8ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
3 Pin Definitions3 Pin Definitions3.1 Pin LayoutKeepout 37IO42361GND267GNDGNDGNDGNDPin 0IO16IO6199IO153518IO41IO14IO5178Figure 3: Module Pin Layout (Top View)Espressif Systems9ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
3 Pin DefinitionsNote:The pin diagram shows the approximate location of pins on the module. For the actual mechanical diagram, please referto Figure 7.1 Physical Dimensions.3.2 Pin DescriptionThe module has 42 pins. See pin definitions in Table 2.Table 2: Pin r supplyIO03I/O/TRTC GPIO0, GPIO0IO14I/O/TRTC GPIO1, GPIO1, TOUCH1, ADC1 CH0IO25I/O/TRTC GPIO2, GPIO2, TOUCH2, ADC1 CH1IO36I/O/TRTC GPIO3, GPIO3, TOUCH3, ADC1 CH2IO47I/O/TRTC GPIO4, GPIO4, TOUCH4, ADC1 CH3IO58I/O/TRTC GPIO5, GPIO5, TOUCH5, ADC1 CH4IO69I/O/TRTC GPIO6, GPIO6, TOUCH6, ADC1 CH5IO710I/O/TRTC GPIO7, GPIO7, TOUCH7, ADC1 CH6IO811I/O/TRTC GPIO8, GPIO8, TOUCH8, ADC1 CH7IO912I/O/TRTC GPIO9, GPIO9, TOUCH9, ADC1 CH8, FSPIHDIO1013I/O/TRTC GPIO10, GPIO10, TOUCH10, ADC1 CH9, FSPICS0, FSPIIO4IO1114I/O/TRTC GPIO11, GPIO11, TOUCH11, ADC2 CH0, FSPID, FSPIIO5IO1215I/O/TRTC GPIO12, GPIO12, TOUCH12, ADC2 CH1, FSPICLK, FSPIIO6IO1316I/O/TRTC GPIO13, GPIO13, TOUCH13, ADC2 CH2, FSPIQ, FSPIIO7IO1417I/O/TRTC GPIO14, GPIO14, TOUCH14, ADC2 CH3, FSPIWP, FSPIDQSIO1518I/O/TRTC GPIO15, GPIO15, U0RTS, ADC2 CH4, XTAL 32K PIO1619I/O/TRTC GPIO16, GPIO16, U0CTS, ADC2 CH5, XTAL 32K NIO1720I/O/TRTC GPIO17, GPIO17, U1TXD, ADC2 CH6, DAC 1IO1821I/O/TRTC GPIO18, GPIO18, U1RXD, ADC2 CH7, DAC 2, CLK OUT3IO1922I/O/TRTC GPIO19, GPIO19, U1RTS, ADC2 CH8, CLK OUT2, USB D-IO2023I/O/TRTC GPIO20, GPIO20, U1CTS, ADC2 CH9, CLK OUT1, USB D IO2124I/O/TRTC GPIO21, GPIO21IO2625I/O/TSPICS1, GPIO26GND26PIO3327I/O/TSPIIO4, GPIO33, FSPIHDIO3428I/O/TSPIIO5, GPIO34, FSPICS0IO3529I/O/TSPIIO6, GPIO35, FSPIDIO3630I/O/TSPIIO7, GPIO36, FSPICLKIO3731I/O/TSPIDQS, GPIO37, FSPIQIO3832I/O/TGPIO38, FSPIWPIO3933I/O/TMTCK, GPIO39, CLK OUT3IO4034I/O/TMTDO, GPIO40, CLK OUT2Espressif SystemsGround10ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
3 Pin DefinitionsNameNo.TypeFunctionIO4135I/O/TMTDI, GPIO41, CLK OUT1IO4236I/O/TMTMS, GPIO42TXD037I/O/TU0TXD, GPIO43, CLK OUT1RXD038I/O/TU0RXD, GPIO44, CLK OUT2IO4539I/O/TGPIO45IO4640IGPIO46High: on, enables the chip.EN41ILow: off, the chip powers off.Note: Do not leave the EN pin floating.GND42PGroundNotice:For peripheral pin configurations, please refer to ESP32-S2 Datasheet.3.3 Strapping PinsESP32-S2 has three strapping pins: GPIO0, GPIO45, GPIO46. The pin-pin mapping between ESP32-S2 andthe module is as follows, which can be seen in Chapter 5 Schematics: GPIO0 IO0 GPIO45 IO45 GPIO46 IO46Software can read the values of corresponding bits from register ”GPIO STRAPPING”.During the chip’s system reset (power-on-reset, RTC watchdog reset, brownout reset, analog super watchdogreset, and crystal clock glitch detection reset), the latches of the strapping pins sample the voltage level asstrapping bits of ”0” or ”1”, and hold these bits until the chip is powered down or shut down.IO0, IO45 and IO46 are connected to the internal pull-up/pull-down. If they are unconnected or the connectedexternal circuit is high-impedance, the internal weak pull-up/pull-down will determine the default input level ofthese strapping pins.To change the strapping bit values, users can apply the external pull-down/pull-up resistances, or use the hostMCU’s GPIOs to control the voltage level of these pins when powering on ESP32-S2.After reset, the strapping pins work as normal-function pins.Refer to Table 3 for a detailed boot-mode configuration of the strapping pins.Table 3: Strapping PinsVDD SPI Voltage 1PinIO452Default3.3 V1.8 VPull-down01Booting ModePinEspressif SystemsDefaultSPI Boot11Download BootESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
3 Pin abling/Disabling ROM Code Print During Booting03 4PinDefaultEnabledDisabledIO46Pull-downSee the fourth noteSee the fourth noteNote:1. Firmware can configure register bits to change the settings of ”VDD SPI Voltage”.2. The strapping combination of GPIO46 1 and GPIO0 0 is invalid and will trigger unexpected behavior.3. Internal pull-up resistor (R1) for IO45 is not populated in the module, as the flash in the module works at 3.3 V bydefault (output by VDD SPI). Please make sure IO45 will not be pulled high when the module is powered up byexternal circuit.4. ROM code can be printed over TXD0 (by default) or DAC 1 (IO17), depending on the eFuse bit.5. When eFuse UART PRINT CONTROL value is: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.Espressif Systems12ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
4 Electrical Characteristics4 Electrical Characteristics4.1 Absolute Maximum RatingsTable 4: Absolute Maximum RatingsSymbolParameterMinMaxVDD33TST OREUnitPower supply voltage–0.33.6VStorage temperature–4085 C4.2 Recommended Operating ConditionsTable 5: Recommended Operating ConditionsSymbolParameterMinTypMaxUnitVDD33Power supply voltage3.03.33.6VIV DDCurrent delivered by external power supply0.5——ATOperating temperature–40—85 CHumidityHumidity condition—85—%RH4.3 DC Characteristics (3.3 V, 25 C)Table 6: DC Characteristics (3.3 V, 25 C)SymbolParameterMinTypMaxUnitCINPin capacitance—2—pFVIHHigh-level input voltage0.75 VDD—VDD 0.3VVILLow-level input voltage–0.3—0.25 VDDVIIHHigh-level input current——50nAIILLow-level input current——50nAVOH 2High-level output voltage0.8 VDD——V2Low-level output voltage——0.1 VDDV—40—mA—28—mAVOLIOHIOLHigh-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)RP UPull-up resistor—45—kΩRP DPull-down resistor—45—kΩVIH nRSTChip reset release voltage0.75 VDD—VDD 0.3VVIL nRSTChip reset voltage–0.3—0.25 VDDVEspressif Systems13ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
4 Electrical CharacteristicsNote:1. VDD is the I/O voltage for a particular power domain of pins.2. VOH and VOL are measured using high-impedance load.4.4 Current Consumption CharacteristicsWith the use of advanced power-management technologies, the module can switch between different powermodes. For details on different power modes, please refer to Section RTC and Low-Power Management inESP32-S2 Datasheet.Table 7: Current Consumption Depending on RF ModesWork modeDescriptionTXActive (RF working)RXPeak (mA)802.11b, 20 MHz, 1 Mbps, @19.5 dBm310802.11g, 20 MHz, 54 Mbps, @15 dBm220802.11n, 20 MHz, MCS7, @13 dBm200802.11n, 40 MHz, MCS7, @13 dBm160802.11b/g/n, 20 MHz63802.11n, 40 MHz68Note: The current consumption measurements are taken with a 3.3 V supply at 25 C of ambient temperature at the RFport. All transmitters’ measurements are based on a 100% duty cycle. The current consumption figures for in RX mode are for cases when the peripherals are disabled and the CPU idle.Table 8: Current Consumption Depending on Work ModesWork modeModem-sleepDescriptionThe CPU ispowered onLight-sleep240 MHz22 mA160 MHz17 mANormal speed: 80 MHz14 mA—550 µAThe ULP co-processor is powered on.235 µAULP sensor-monitored patternDeep-sleepPower offCurrent consumption (Typ)22 µA @1% dutyRTC timer RTC memory25 µARTC timer only20 µACHIP PU is set to low level, the chip is powered off.1 µANote: The current consumption figures in Modem-sleep mode are for cases where the CPU is powered on and the cacheidle. When Wi-Fi is enabled, the chip switches between Active and Modem-sleep modes. Therefore, current consumption changes accordingly.Espressif Systems14ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
4 Electrical Characteristics In Modem-sleep mode, the CPU frequency changes automatically. The frequency depends on the CPU load andthe peripherals used. During Deep-sleep, when the ULP co-processor is powered on, peripherals such as GPIO and I2C are able tooperate. The ”ULP sensor-monitored pattern” refers to the mode where the ULP coprocessor or the sensor works periodically. When touch sensors work with a duty cycle of 1%, the typical current consumption is 22 µA.4.5 Wi Fi RF Characteristics4.5.1 Wi Fi RF StandardsTable 9: Wi Fi RF StandardsNameDescriptionCenter frequency range of operating channel note12412 2484 MHzWi-Fi wireless standardIEEE 802.11b/g/n11b: 1, 2, 5.5 and 11 Mbps20 MHzData rate11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps11n: MCS0-7, 72.2 Mbps (Max)40 MHz11n: MCS0-7, 150 Mbps (Max)Antenna typePCB antenna, IPEX antenna1. Device should operate in the center frequency range allocated by regional regulatory authorities. Target centerfrequency range is configurable by software.2. For the modules that use IPEX antennas, the output impedance is 50 Ω. For other modules without IPEX antennas,users do not need to concern about the output impedance.4.5.2 Transmitter CharacteristicsTable 10: Transmitter CharacteristicsParameterTX Power note1RateTyp11b, 1 Mbps19.511b, 11 Mbps19.511g, 6 Mbps1811g, 54 Mbps1511n, HT20, MCS01811n, HT20, MCS713.511n, HT40, MCS01811n, HT40, MCS713.5UnitdBm1. Target TX power is configurable based on device or certification requirements.4.5.3 Receiver CharacteristicsEspressif Systems15ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
4 Electrical CharacteristicsTable 11: Receiver CharacteristicsParameterRX SensitivityRX Maximum Input LevelAdjacent Channel RejectionEspressif SystemsRateTyp1 Mbps–972 Mbps–955.5 Mbps–9311 Mbps–886 Mbps–929 Mbps–9112 Mbps–8918 Mbps–8624 Mbps–8336 Mbps–8048 Mbps–7654 Mbps–7411n, HT20, MCS0–9211n, HT20, MCS1–8811n, HT20, MCS2–8511n, HT20, MCS3–8211n, HT20, MCS4–7911n, HT20, MCS5–7511n, HT20, MCS6–7311n, HT20, MCS7–7211n, HT40, MCS0–8911n, HT40, MCS1–8511n, HT40, MCS2–8311n, HT40, MCS3–7911n, HT40, MCS4–7611n, HT40, MCS5–7211n, HT40, MCS6–7011n, HT40, MCS7–6811b, 1 Mbps511b, 11 Mbps511g, 6 Mbps511g, 54 Mbps011n, HT20, MCS0511n, HT20, MCS7011n, HT40, MCS0511n, HT40, MCS7011b, 11 Mbps3511g, 6 Mbps3111g, 54 Mbps1411n, HT20, MCS03111n, HT20, MCS71311n, HT40, MCS01911n, HT40, MCS7816UnitdBmdBmdBESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
53215 Schematics5 SchematicsC2C3100pF1uFTBD3GNDGND XOUTC1XINThe value of R4 varies with the actualPCB board.VDD33Y1GNDGNDDC4TBD2The values of C1 and C4 vary withthe selection of the crystal.4GND1Espressif SystemsD4VDD33VDD33GNDR110K(NC)CHIP 3C140.1uF1uFGNDVDD33VDD33C16GNDFlash and PSRAMVDD IWPPSRAM-3V3(NC)1GND0.1uFGPIO210.1uFVDD SPIGND1GPIO26VDD PIO20NC: No component.R10GNDCHIP PU11The values of C11, L2 and C12vary with the actual PCB SPICLKSPICS0SPIWPSPIHDVDD 20GNDTBDVDDALNA 1C12VDD330.1uFGPIO17TBD LAN INL2C11GPIO10GPIO11GPIO12GPIO13GPIO14VDD3P3 RTCXTAL 32K PXTAL 32K NDAC 1DAC 2GPIO19GPIO20VDD3P3 RTC IOGPIO21RF GPIO13GPIO14ANT1 R7PCB ANTGND121234567891011121314C101GND0(NC)PCB ANTENNAGPIO1657GND432ANT2 R6GND0.1uFGNDIPEXGNDANT2ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2A1GND17BSubmit Documentation FeedbackCANT10.1uF1uFGNDC9CHIP PUGPIO46VDDAXTAL PXTAL NVDDAGPIO45U0RXDU0TXDMTMSMTDIVDD3P3 91L1C6R2R3GPIO15GND2.0nH10.1uFVDD33GPIO1440MHz( 25IO26Pin.26GNDGNDGNDFigure 4: ESP32 S2 WROOM SchematicsA
53215 SchematicsC2C3100pF1uFTBD3GNDGND XOUTC1XINVDD33Y1GNDGNDThe value of R4 varies with the actualPCB board.C4DTBD2The values of C1 and C4 vary withthe selection of the crystal.4GND1Espressif SystemsD4VDD33VDD33GNDR110K(NC)CHIP 1uF1uFGNDVDD33C16GND0.1uFGNDFlash and PSRAMVDD PPSRAM-3V3(NC)10.1uFGPIO11GPIO26ESP32-S2GNDVDD SPIC14C1311VDD U1R10GNDCHIP PU1GPIO19NC: No SPIQSPICLKSPICS0SPIWPSPIHDVDD PSPIHD1GPIO18GNDThe values of C11, L2 and C12vary with the actual PCB board.GPIO21GNDTBDVDDALNA 7C12VDD330.1uF1TBD LAN INL2C11GPIO15GPIO16GPIO17GPIO18GPIO19GPIO20RF ANTGPIO10GPIO11GPIO12GPIO13GPIO14VDD3P3 RTCXTAL 32K PXTAL 32K NDAC 1DAC 2GPIO19GPIO20VDD3P3 RTC IOGPIO210(NC)1516171819202122232425262728ANT1 314C10PCB ANTENNAGPIO160GND3GNDPCB ANTESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2AANT2 R6GND0.1uFGNDIPEXGNDANT218BSubmit Documentation FeedbackC21GND57ANT10.1uF1uFGNDC9CHIP PUGPIO46VDDAXTAL PXTAL NVDDAGPIO45U0RXDU0TXDMTMSMTDIVDD3P3 91L1C6R2R3GPIO15GND2.0nH10.1uFVDD33GPIO1440MHz( 25IO26Pin.26GNDGNDGNDFigure 5: ESP32 S2 WROOM I SchematicsA
6 Peripheral Schematics4326 Peripheral 12345678910111213141516IO0IO1C1C3IO222uF0.1uF 1IO26GNDVDD33USB D USB D-GNDJP31212USB )X1: ESR Max. 70 KΩNC: No component.GNDSW1IO0R70EN0.1uFJP4Boot Option1212C8GNDGNDGNDFigure 6: Peripheral SchematicsNote: Soldering the EPAD to the ground of the base board is not a must, though doing so can get optimized thermalperformance. If users do want to solder it, they need to ensure that the correct quantity of soldering paste is applied. To ensure the power supply to the ESP32-S2 chip during power-up, it is advised to add an RC delay circuit at theEN pin. The recommended setting for the RC delay circuit is usually R 10 kΩ and C 1 µF. However, specificparameters should be adjusted based on the power-up timing of the module and the power-up and reset sequencetiming of the chip. For ESP32-S2’s power-up and reset sequence timing diagram, please refer to Section PowerScheme in ESP32-S2 Datasheet. GPIO18 works as U1RXD and is in an uncertain state when the chip is powered on, which may affect the chip’sentry into download boot mode. To solve this issue, add an external pull-up resistor.4Espressif Systems3192ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
7 Physical Dimensions and PCB Land Pattern7 Physical Dimensions and PCB Land Pattern7.1 Physical DimensionsUnit: mmTolerance: /-0.1 mm3.30 431.00 0.150.808.356.3018.00 0.150.45Top ViewSide ViewBottom ViewFigure 7: Physical DimensionsEspressif Systems20ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
7 Physical Dimensions and PCB Land Pattern7.2 Recommended PCB Land PatternUnit: mmVia for thermal padCopper42x1.50Antenna 031.001.107.811.006.3018.0017261.502.25Figure 8: Recommended PCB Land PatternEspressif Systems21ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
7 Physical Dimensions and PCB Land Pattern7.3 U.FL Connector DimensionsUnit: mmFigure 9: U.FL Connector DimensionsEspressif Systems22ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
8 Product Handling8 Product Handling8.1 Storage ConditionThe products sealed in Moisture Barrier Bag (MBB) should be stored in a noncondensing atmosphericenvironment of 40 C/90%RH.The module is rated at moisture sensitivity level (MSL) 3.After unpacking, the module must be soldered within 168 hours with factory conditions 25 5 C and /60%RH.The module needs to be baked if the above conditions are not met.8.2 ESD Human body model (HBM): 2000 V Charged-device model (CDM): 500 V Air discharge: 6000 V Contact discharge: 4000 VTemperature ( )8.3 Reflow ProfilePeak Temp.235 250 250Preheating zone150 200 60 120 s217200Reflow zone217 60 90 sCooling zone–1 –5 /sSoldering time 30 sRamp-up zone1 3 /s1005025Time (sec.)0050100150200250Ramp-up zone — Temp.: 25 150 Time: 60 90 s Ramp-up rate: 1 3 /sPreheating zone — Temp.: 150 200 Time: 60 120 sReflow zone — Temp.: 217 60 90 s; Peak Temp.: 235 250 Time: 30 70 sCooling zone — Peak Temp. 180 Ramp-down rate: –1 –5 /sSolder — Sn-Ag-Cu (SAC305) lead-free solder alloyFigure 10: Reflow ProfileNote:Solder the module in a single reflow.Espressif Systems23ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
9 MAC Addresses and eFuse9 MAC Addresses and eFuseThe eFuse in ESP32-S2 has been burnt into 48-bit mac address. The actual addresses the chip uses in stationor AP modes correspond to mac address in the following way: Station mode: mac address AP mode: mac address 1There are seven blocks in eFuse for users to use. Each block is 256 bits in size and has independent write/readdisable controller. Six of them can be used to store encrypted key or user data, and the remaining one is onlyused to store user data.Espressif Systems24ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
10 Learning Resources10Learning Resources10.1Must Read DocumentsThe following link provides documents related to ESP32-S2. ESP32-S2 DatasheetThis document provides an introduction to the specifications of the ESP32-S2 hardware, includingoverview, pin definitions, functional description, peripheral interface, electrical characteristics, etc. ESP-IDF Programming GuideIt hosts extensive documentation for ESP-IDF ranging from hardware guides to API reference. ESP32-S2 Technical Reference ManualThe manual provides detailed information on how to use the ESP32-S2 memory and peripherals. Espressif Products Ordering Information10.2Must Have ResourcesHere are the ESP32-S2-related must-have resources. ESP32-S2 BBSThis is an Engineer-to-Engineer (E2E) Community for ESP32-S2 where you can post questions, shareknowledge, explore ideas, and help solve problems with fellow engineers.Espressif Systems25ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
Revision HistoryRevision HistoryDateVersionRelease notes Added TWAI to Chapter 1 Module Overview Updated Table 7 Current Consumption Characteristics2020-12-17V1.2 Updated the capacitance value of RC delay circuit to 1 µF in Chapter 6Peripheral Schematics Updated note in Section 8.3 Reflow Profile2020-07-31V1.1Updated notes in table 12020-06-01V1.0Official release2020-03-10V0.5Preliminary releaseEspressif Systems26ESP32-S2-WROOM & ESP32-S2-WROOM-I Datasheet v1.2Submit Documentation Feedback
ESP32-S2-WROOM and ESP32-S2-WROOM-I are two powerful, generic Wi-Fi MCU modules that have a rich set of peripherals. They are an ideal choice for a wide variety of application scenarios relating to Internet of Things (IoT), wearable electronics and smart home. ESP32-S2-WROOM comes with a PCB antenna, and
Figure 1: ESP32-WROOM-32D Pin Layout (Top View) Note: The pin layout of ESP32-WROOM-32U is the same as that of ESP32-WROOM-32D, except that ESP32-WROOM-32U has no keepout zone. 2.2 Pin Description The ESP32-WROOM-32D and ESP32-WROOM-32U have 38 pins. See pin definitions in Table 3. Table
List of Tables 1 ESP32-WROOM-32D vs. ESP32-WROOM-32U 6 2 ESP32-WROOM-32D and ESP32-WROOM-32U
The ESP32 strong series /strong of chips includes ESP32-D0WD-V3, ESP32-D0WDQ6-V3, ESP32-D0WD, ESP32-D0WDQ6, ESP32-D2WD, and ESP32-S0WD, among which, ESP32-D0WD-V3 and and ESP32-D0WDQ6-V3 are based on . strong Espressif /strong Systems 4 Submit Documentation Feedback ESP32 Datasheet V3.3. 1.Overview 1.6 Block Diagram Core and memory ROM Cryptographic hardware acceleration .
32UisdifferentfromESP-WROOM-32Dinthat ESP32-WROOM-32UintegratesaU.FLcon
1 ESP32-S2-SOLOBlockDiagram 8 2 ESP32-S2-SOLO-UBlockDiagram 8 3 PinLayout(TopView) 9 4 ESP32-S2-SOLOSchematics 18 5 ESP32-S2-SOLO-USchematics 19 6 PeripheralSchematics 20 7 ESP32-S2-SOLOPhysicalDimensions 21 8 ESP32-S2-SOLO-UPhysicalDimensions 21 9 ESP32-S2-SOLORecommendedPCBLandPattern 22 10 ESP32-S2-SOLO-URecommendedPCBLandPattern 23
ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U are two general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and high performance make th
ListofTables List of Tables 1 ESP32-C3-WROOM-02(ANT)SeriesComparison 3 2 ESP32-C3-WROOM-02U(CONN)SeriesComparison 3 3 PinDefinitions 10 4 StrappingPins 12
Core 6 – Equality and Diversity . Status Core – this is a key aspect of all jobs and of everything that everyone does. It underpins all dimensions in the NHS KSF. Levels 1 Act in ways that support equality and value diversity . 2. Support equality and value diversity . 3. Promote equality and value diversity
