ESP32­S2­MINI­1 & ESP32­S2­MINI­1U - Espressif

1 esp32 S2 MINI 1 & esp32 S2 MINI GHz Wi Fi ( b/g/n) moduleBuilt around esp32 S2 series of SoC, Xtensa single core 32 bit LX7 microprocessor4 MB flash and optional 2 MB PSRAM in chip package37 GPIOs, rich set of peripheralsOn board PCB antenna or external antenna connectorVersion SystemsCopyright This DocumentThis document provides the specifications for esp32 -S2-MINI-1 and esp32 -S2-MINI-1U UpdatesPlease always refer to the latest version HistoryFor revision history of this document, please refer to thelast Change NotificationEspressif provides email notifications to keep customers updated on changes to technical subscribe certificates for Espressif products Module Overview1 Module and On Chip Memory esp32 -S2FH4 or esp32 -S2FN4R2 chipembedded, Xtensa single-core 32-bit LX7microprocessor, up to 240 MHz 128 KB ROM 320 KB SRAM 16 KB SRAM in RTC 4 MB embedded flash 2 MB embedded PSRAM ( esp32 -S2FN4R2 only)Wi Fi b/g/n Bit rate.

2 Up to 150 Mbps A-MPDU and A-MSDU aggregation s guard interval support Center frequency range of operating channel:2412~2484 MHzPeripherals GPIO, SPI, LCD, UART, I2C, I2S, Camerainterface, IR, pulse counter, LED PWM, TWAI (compatible with ISO 11898-1), USB OTG ,ADC, DAC, touch sensor, temperature sensorIntegrated Components on Module 40 MHz crystal oscillatorAntenna Options On-board PCB antenna ( esp32 -S2-MINI-1) External antenna via a connector( esp32 -S2-MINI-1U)Operating Conditions Operating voltage/Power supply: ~ V Operating ambient temperature: 40~85 CCertification Green certification: RoHS/REACH RF certification: FCC/CE-RED/SRRC/ICTest HTOL/HTSL/uHAST/ and esp32 -S2-MINI-1U are two powerful, generic Wi-Fi MCU modules that have a rich set ofperipherals. They are an ideal choice for a wide variety of application scenarios relating to Internet of Things (IoT),wearable electronics and smart ordering information of the two modules is listed as follows:Table 1: Ordering InformationModuleOrdering codeChip embeddedModule dimensions (mm) esp32 -S2-MINI-1 (ANT) (CONN) :For dimensions of the external antenna connector, please see Systems3 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Module OverviewESP32-S2-MINI-1 comes with a on-board PCB antenna, and esp32 -S2-MINI-1U with an connector forexternal antenna.

3 Both esp32 -S2-MINI-1 and esp32 -S2-MINI-1U have two variants: integrating the esp32 -S2FH4 chip (which is embedded with a 4 MB high-temperature flash), or integrating the esp32 -S2FN4R2 chip (which is embedded with a 4 MB flash and 2 MB PSRAM)The two variants only differ in the chip integrated. In this datasheet unless otherwise stated, esp32 -S2-MINI-1refers to both esp32 -S2-MINI-1-N4 and esp32 -S2-MINI-1-N4R2, whereas esp32 -S2-MINI-1U refers to bothESP32-S2-MINI-1U-N4 and esp32 -S2FH4 chip and the esp32 -S2FN4R2 chip falls into the same category, namely esp32 -S2 chipseries. esp32 -S2 series of chips has an Xtensa 32-bit LX7 CPU that operates at up to 240 MHz. It has alow-power co-processor that can be used instead of the CPU to save power while performing tasks that do notrequire much computing power, such as monitoring of series integrates a rich set of peripherals, ranging from SPI, I2S, UART, I2C, LED PWM, TWAI , LCD,Camera interface, ADC, DAC, touch sensor, temperature sensor, as well as up to 43 GPIOs.

4 It also includes afull-speed USB On-The-Go (OTG) interface to enable USB esp32 -S2FH4 chip and the esp32 -S2FN4R2 chip vary in: temperature of embedded flash whether a PSRAM is embeddedFor details, please refer to SectionFamily Member ComparisoninESP32-S2 Series Generic Low-power IoT Sensor Hub Generic Low-power IoT Data Loggers Cameras for Video Streaming Over-the-top (OTT) Devices USB Devices Speech Recognition Image Recognition Mesh Network Home Automation Smart Home Control Panel Smart Building Industrial Automation Smart Agriculture Audio Applications Health Care Applications Wi-Fi-enabled Toys Wearable Electronics Retail & Catering Applications Smart POS MachinesEspressif Systems4 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Module Applications42 Block Diagram83 Pin Pin Pin Strapping Pins124 Electrical Absolute Maximum Recommended Operating DC Characteristics ( V, 25 C)

5 Current Consumption Wi-Fi RF Wi-Fi RF Transmitter Receiver Characteristics165 Schematics186 Peripheral Schematics207 Physical Dimensions and PCB Land Physical Recommended PCB Land Dimensions of External Antenna Connector258 Product Storage Reflow Profile269 MAC Addresses and eFuse2710 Learning Must-Read Must-Have Resources28 Revision History29 Espressif Systems5 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet of TablesList of Tables1 Ordering Information32 Pin Definitions103 Strapping Pins124 Absolute Maximum Ratings145 Recommended Operating Conditions146 DC Characteristics ( V, 25 C)147 Current Consumption Depending on RF Modes158 Current Consumption Depending on Work Modes159 Wi-Fi RF Standards1610 Transmitter Characteristics1611 Receiver Characteristics17 Espressif Systems6 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet of FiguresList of Figures1 esp32 -S2-MINI-1 Block Diagram82 esp32 -S2-MINI-1U Block Diagram83 esp32 -S2-MINI-1 Pin Layout (Top View)94 esp32 -S2-MINI-1U Pin Layout (Top View)

6 105 esp32 -S2-MINI-1 Schematics186 esp32 -S2-MINI-1U Schematics197 Peripheral Schematics208 esp32 -S2-MINI-1 Physical Dimensions219 esp32 -S2-MINI-1U Physical Dimensions2210 esp32 -S2-MINI-1 Recommended PCB Land Pattern2311 esp32 -S2-MINI-1U Recommended PCB Land Pattern2412 Dimensions of External Antenna Connector2513 Reflow Profile26 Espressif Systems7 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Block Diagram2 Block DiagramFLASH(QSPI) esp32 -S2FH4 esp32 -S2FN4R2RF Matching40 MHzCrystalESP32-S2-MINI-1 GPIOsAntennaPSRAM(opt.)(QSPI)3V3 ENFLASH(QSPI) esp32 -S2FH4 esp32 -S2FN4R240 MHzCrystalESP32-S2-MINI-1 UGPIOsPSRAM(opt.)(QSPI)3V3 ENRF MatchingAntennaFigure 1: esp32 S2 MINI 1 Block DiagramFLASH(QSPI) esp32 -S2FH4 esp32 -S2FN4R2RF Matching40 MHzCrystalESP32-S2-MINI-1 GPIOsAntennaPSRAM(opt.)(QSPI)3V3 ENFLASH(QSPI) esp32 -S2FH4 esp32 -S2FN4R240 MHzCrystalESP32-S2-MINI-1 UGPIOsPSRAM(opt.)

7 (QSPI)3V3 ENRF MatchingAntennaFigure 2: esp32 S2 MINI 1U Block DiagramEspressif Systems8 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Pin Definitions3 Pin LayoutPin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 GNDGND3V3IO0IO1IO2IO3IO4IO5IO6IO7IO8IO9I O10IO11 Pin 63 GNDIO12 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20 Pin 21 Pin 22 Pin 23 Pin 24 Pin 25 Pin 26 Pin 27 Pin 28 Pin 29 Pin 30 Pin 64 GNDPin 31IO13IO14IO15IO16IO17IO18IO19IO20IO21IO 26 NCIO33IO34 GNDPin 32 Pin 33 Pin 34 Pin 35 Pin 36 Pin 37 Pin 38 Pin 39 Pin 40 Pin 41 Pin 42 Pin 43 Pin 44 Pin 45 Pin 65 GNDPin 62 GNDPin 46 Pin 47 Pin 48 Pin 49 Pin 50 Pin 51 Pin 52 Pin 53 Pin 54 Pin 55 Pin 56 Pin 57 Pin 58 Pin 59 Pin 60 Pin 61 GNDGNDGNDGNDGNDGNDGNDGNDGNDIO35IO36IO37I O38IO39IO40IO41IO42 TXD0 RXD0IO45 GNDGNDIO46 ENGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGN DGNDGNDK eepout ZoneFigure 3: esp32 S2 MINI 1 Pin Layout (Top View) Espressif Systems9 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Pin DefinitionsPin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 GNDGND3V3IO0IO1IO2IO3IO4IO5IO6IO7IO8IO9I O10IO11 Pin 63 GNDIO12 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20 Pin 21 Pin 22 Pin 23 Pin 24 Pin 25 Pin 26 Pin 27 Pin 28 Pin 29 Pin 30 Pin 64 GNDPin 31IO13IO14IO15IO16IO17IO18IO19IO20IO21IO 26 NCIO33IO34 GNDPin 32 Pin 33 Pin 34 Pin 35 Pin 36 Pin 37 Pin 38 Pin 39 Pin 40 Pin 41 Pin 42 Pin 43 Pin 44 Pin 45 Pin 65 GNDPin 62 GNDPin 46 Pin 47 Pin 48 Pin 49 Pin 50 Pin 51 Pin 52 Pin 53 Pin 54 Pin 55 Pin 56 Pin 57 Pin 58 Pin 59 Pin 60 Pin 61 GNDGNDGNDGNDGNDGNDGNDGNDGNDIO35IO36IO37I O38IO39IO40IO41IO42 TXD0 RXD0IO45 GNDGNDIO46 ENGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGN DGNDGNDF igure 4: esp32 S2 MINI 1U Pin Layout (Top View)Note.

8 The pin diagram shows the approximate location of pins on the module. For the actual mechanical diagram, please referto DescriptionThe module has 65 pins. See pin definitions in 2: Pin , 2, 30, 42, 43, 46-65 PGround3V33 PPower supplyIO04I/O/TRTC_GPIO0, GPIO0IO15I/O/TRTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0IO26I/O/TRTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1IO37I/O/TRTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2IO48I/O/TRTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3IO59I/O/TRTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4IO610I/O/TRTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5IO711I/O/TRTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6IO812I/O/TRTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7 Espressif Systems10 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Pin , GPIO9, TOUCH9, ADC1_CH8, FSPIHDIO1014I/O/TRTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4IO1115I/O/TRTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5IO1216I/O/TRTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6IO1317I/O/TRTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7IO1418I/O/TRTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQSIO1519I/O/TRTC_GPIO15.

9 GPIO15, U0 RTS, ADC2_CH4, XTAL_32K_PIO1620I/O/TRTC_GPIO16, GPIO16, U0 CTS, ADC2_CH5, XTAL_32K_NIO1721I/O/TRTC_GPIO17, GPIO17, U1 TXD, ADC2_CH6, DAC_1IO1822I/O/TRTC_GPIO18, GPIO18, U1 RXD, ADC2_CH7, DAC_2, CLK_OUT3IO1923I/O/TRTC_GPIO19, GPIO19, U1 RTS, ADC2_CH8, CLK_OUT2, USB_D-IO2024I/O/TRTC_GPIO20, GPIO20, U1 CTS, ADC2_CH9, CLK_OUT1, USB_D+IO2125I/O/TRTC_GPIO21, GPIO21IO2626I/O/TSPICS1, GPIO26NC27 NCIO3328I/O/TSPIIO4, GPIO33, FSPIHDIO3429I/O/TSPIIO5, GPIO34, FSPICS0IO3531I/O/TSPIIO6, GPIO35, FSPIDIO3632I/O/TSPIIO7, GPIO36, FSPICLKIO3733I/O/TSPIDQS, GPIO37, FSPIQIO3834I/O/TGPIO38, FSPIWPIO3935I/O/TMTCK, GPIO39, CLK_OUT3IO4036I/O/TMTDO, GPIO40, CLK_OUT2IO4137I/O/TMTDI, GPIO41, CLK_OUT1IO4238I/O/TMTMS, GPIO42 TXD039I/O/TU0 TXD, GPIO43, CLK_OUT1 RXD040I/O/TU0 RXD, GPIO44, CLK_OUT2IO4541I/O/TGPIO45IO4644 IGPIO46EN45 IHigh: on, enables the : off, the chip powers : Do not leave the EN pin on the module is pulled up to VDD33 through a 10 k resistor.

10 For details, please refer to Figure5and is used by the embedded PSRAM on the esp32 -S2-MINI-1-N4R2 and esp32 -S2-MINI-1U-N4R2 modules,and cannot be used for other peripheral pin configurations, please refer toESP32-S2 Series Systems11 Submit Documentation FeedbackESP32-S2-MINI-1 & esp32 -S2-MINI-1U Datasheet Pin PinsESP32-S2 series of chips has three strapping pins: GPIO0, GPIO45, GPIO46. The pin-pin mapping betweenESP32-S2 series of chips and the module is as follows, which can be seen in Chapter5 Schematics: GPIO0 = IO0 GPIO45 = IO45 GPIO46 = IO46 Software 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 , IO45 and IO46 are connected to the internal pull-up/pull-down.