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ESP32-WROOM-32U

ESP32-WROOM-32U

  • 厂商:

    ESPRESSIF(乐鑫)

  • 封装:

    MODULE-38P_18X19.2MM_SM

  • 描述:

    ESP32-WROOM-32U

  • 数据手册
  • 价格&库存
ESP32-WROOM-32U 数据手册
ESP32­WROOM­32D & ESP32­WROOM­32U FO NO T RE R CO NE M W M (N EN D RN ES DE D) IG NS D Datasheet Version 2.3 Espressif Systems Copyright © 2022 www.espressif.com About This Document This document provides the specifications for the ESP32-WROOM-32D and ESP32-WROOM-32U modules. Document Updates Please always refer to the latest version on https://www.espressif.com/en/support/download/documents. Revision History 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. Note that you need to update your subscription to receive notifications of new products you are not currently subscribed to. Certification Download certificates for Espressif products from www.espressif.com/en/certificates. Not Recommended For New Designs (NRND) Contents 1 Overview 6 2 Pin Definitions 8 2.1 Pin Layout 8 2.2 Pin Description 8 2.3 Strapping Pins 10 3 Functional Description 12 3.1 CPU and Internal Memory 12 3.2 External Flash and SRAM 12 3.3 Crystal Oscillators 12 3.4 RTC and Low-Power Management 13 4 Peripherals and Sensors 14 5 Electrical Characteristics 15 5.1 Absolute Maximum Ratings 15 5.2 Recommended Operating Conditions 15 5.3 DC Characteristics (3.3 V, 25 °C) 15 5.4 Wi-Fi Radio 16 5.5 Bluetooth LE Radio 17 5.5.1 Receiver 17 5.5.2 Transmitter 17 5.6 Reflow Profile 18 6 Schematics 19 7 Peripheral Schematics 21 8 Physical Dimensions 23 9 Recommended PCB Land Pattern 25 10 Dimensions of External Antenna Connector 27 11 Related Documentation and Resources 28 Revision History 29 Not Recommended For New Designs (NRND) List of Tables 1 ESP32-WROOM-32D vs. ESP32-WROOM-32U 6 2 ESP32-WROOM-32D and ESP32-WROOM-32U Specifications 7 3 Pin Definitions 8 4 Strapping Pins 10 5 Absolute Maximum Ratings 15 6 Recommended Operating Conditions 15 7 DC Characteristics (3.3 V, 25 °C) 15 8 Wi-Fi Radio Characteristics 16 9 Receiver Characteristics – Bluetooth LE 17 10 Transmitter Characteristics – Bluetooth LE 17 Not Recommended For New Designs (NRND) List of Figures 1 ESP32-WROOM-32D Pin Layout (Top View) 8 2 Reflow Profile 18 3 ESP32-WROOM-32D Schematics 19 4 ESP32-WROOM-32U Schematics 20 5 ESP32-WROOM-32D & ESP32-WROOM-32U Peripheral Schematics 21 6 Physical Dimensions of ESP32-WROOM-32D 23 7 Physical Dimensions of ESP32-WROOM-32U 24 8 Recommended PCB Land Pattern of ESP32-WROOM-32D 25 9 Recommended PCB Land Pattern of ESP32-WROOM-32U 26 10 Dimensions of External Antenna Connector of ESP32-WROOM-32U 27 Not Recommended For New Designs (NRND) 1 Overview 1 Overview ESP32-WROOM-32D and ESP32-WROOM-32U are powerful, generic Wi-Fi + Bluetooth + Bluetooth LE MCU modules that target a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding. ESP32-WROOM-32U is different from ESP32-WROOM-32D in that ESP32-WROOM-32U integrates a connector to connect an external antenna. For detailed information of the connector please see Chapter 10. Note that the information in this data sheet is applicable to both modules. Any differences between them will be clearly specified in the course of this document. Table 1 lists the difference between ESP32-WROOM-32D and ESP32-WROOM-32U. Table 1: ESP32­WROOM­32D vs. ESP32­WROOM­32U Module ESP32-WROOM-32D ESP32-WROOM-32U Core ESP32-D0WD ESP32-D0WD SPI flash 32 Mbits, 3.3 V 32 Mbits, 3.3 V Crystal 40 MHz 40 MHz Antenna on-board PCB antenna Dimensions (Unit: mm) Schematics external antenna connector (which needs to be connected to an external antenna) 18 × 25.5 × 3.1 (See Figure 6 for details) 18 × 19.2 × 3.2 (See Figure 7 for details) See Figure 3 for details. See Figure 4 for details. At the core of the two modules is the ESP32-D0WD chip that belongs to the ESP32 series* of chips. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The chip also has a low-power coprocessor that can be used instead of the CPU to save power while performing tasks that do not require much computing power, such as monitoring of peripherals. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, SD card interface, Ethernet, high-speed SPI, UART, I2S and I2C. Note: * For details on the part numbers of the ESP32 family of chips, please refer to the document ESP32 Datasheet. The integration of Bluetooth® , Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is all-around: using Wi-Fi allows a large physical range and direct connection to the Internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 µA, making it suitable for battery powered and wearable electronics applications. The module supports a data rate of up to 150 Mbps, and 20 dBm output power at the antenna to ensure the widest physical range. As such the module does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity. The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that users can upgrade their products even after their release, at minimum cost and effort. Table 2 provides the specifications of ESP32-WROOM-32D and ESP32-WROOM-32U. Not Recommended For New Designs (NRND) Espressif Systems 6 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 1 Overview Table 2: ESP32­WROOM­32D and ESP32­WROOM­32U Specifications Categories Items Specifications See RF Certification Certification Test certificates for ESP32-WROOM-32D and ESP32-WROOM-32U Wi-Fi Certification Wi-Fi Alliance Bluetooth certification BQB Green Certification REACH/RoHS Reliablity HTOL/HTSL/uHAST/TCT/ESD 802.11 b/g/n (802.11n up to 150 Mbps) Protocols Wi-Fi A-MPDU and A-MSDU aggregation and 0.4 µs guard interval support Center frequency range of operating channel Bluetooth v4.2 BR/EDR and Bluetooth LE specifica- Protocols Bluetooth 2412 ~ 2484 MHz tion NZIF receiver with –97 dBm sensitivity Radio Class-1, class-2 and class-3 transmitter AFH Audio CVSD and SBC SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch Module interfaces sensor, ADC, DAC, Two-Wire Automotive Interface (TWAI® ), compatible with ISO11898-1 (CAN Specification 2.0) On-chip sensor Hardware Hall sensor Integrated crystal Integrated SPI flash 40 MHz crystal 1 4 MB Operating voltage/Power supply 3.0 V ~ 3.6 V Operating current Average: 80 mA Minimum current delivered by power supply Recommended operating ambient temperature range 2 Moisture sensitivity level (MSL) 500 mA –40 °C ~ +85 °C Level 3 Notice: 1. ESP32-WROOM-32D and ESP32-WROOM-32U with 8 MB flash or 16 MB flash are available for custom order. 2. ESP32-WROOM-32D and ESP32-WROOM-32U with high temperature range (–40 °C ~ +105 °C) option are available for custom order. 4 MB SPI flash is supported on the high temperature range version. 3. For detailed ordering information, please see ESP Product Selector. Not Recommended For New Designs (NRND) Espressif Systems 7 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 2 Pin Definitions 2 Pin Definitions 2.1 Pin Layout Keepout Zone 1 GND GND 38 2 3V3 IO23 37 3 EN IO22 36 4 SENSOR_VP TXD0 35 5 SENSOR_VN RXD0 34 6 IO34 IO21 33 39 GND 12 IO27 IO16 27 13 IO14 IO4 26 14 IO12 IO0 25 24 28 IO2 IO17 23 IO26 IO15 11 22 29 SD1 IO5 21 IO25 SD0 10 20 30 CLK IO18 19 IO33 CMD 9 18 31 SD3 IO19 17 IO32 SD2 8 16 32 IO13 NC 15 IO35 GND 7 Figure 1: ESP32­WROOM­32D 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 3: Pin Definitions Name No. Type Function GND 1 P Ground 3V3 2 P Power supply EN 3 I Module-enable signal. Active high. SENSOR_VP 4 I GPIO36, ADC1_CH0, RTC_GPIO0 SENSOR_VN 5 I GPIO39, ADC1_CH3, RTC_GPIO3 IO34 6 I GPIO34, ADC1_CH6, RTC_GPIO4 IO35 7 I GPIO35, ADC1_CH7, RTC_GPIO5 Not Recommended For New Designs (NRND) Espressif Systems 8 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 2 Pin Definitions Name No. Type Function IO32 8 I/O IO33 9 I/O IO25 10 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0 IO26 11 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1 IO27 12 I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV IO14 13 I/O IO12 14 I/O GND 15 P IO13 16 I/O SHD/SD2* 17 I/O GPIO9, SD_DATA2, SPIHD, HS1_DATA2, U1RXD SWP/SD3* 18 I/O GPIO10, SD_DATA3, SPIWP, HS1_DATA3, U1TXD SCS/CMD* 19 I/O GPIO11, SD_CMD, SPICS0, HS1_CMD, U1RTS SCK/CLK* 20 I/O GPIO6, SD_CLK, SPICLK, HS1_CLK, U1CTS SDO/SD0* 21 I/O GPIO7, SD_DATA0, SPIQ, HS1_DATA0, U2RTS SDI/SD1* 22 I/O GPIO8, SD_DATA1, SPID, HS1_DATA1, U2CTS IO15 23 I/O IO2 24 I/O IO0 25 I/O IO4 26 I/O IO16 27 I/O GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT IO17 28 I/O GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180 IO5 29 I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK IO18 30 I/O GPIO18, VSPICLK, HS1_DATA7 IO19 31 I/O GPIO19, VSPIQ, U0CTS, EMAC_TXD0 NC 32 - - IO21 33 I/O GPIO21, VSPIHD, EMAC_TX_EN RXD0 34 I/O GPIO3, U0RXD, CLK_OUT2 TXD0 35 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2 IO22 36 I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1 IO23 37 I/O GPIO23, VSPID, HS1_STROBE GND 38 P Ground GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4, TOUCH9, RTC_GPIO9 GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output), ADC1_CH5, TOUCH8, RTC_GPIO8 GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2 GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3 Ground GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3 GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0 GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER Notice: * Pins SCK/CLK, SDO/SD0, SDI/SD1, SHD/SD2, SWP/SD3 and SCS/CMD, namely, GPIO6 to GPIO11 are connected to the integrated SPI flash integrated on the module and are not recommended for other uses. Not Recommended For New Designs (NRND) Espressif Systems 9 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 2 Pin Definitions 2.3 Strapping Pins ESP32 has five strapping pins, which can be seen in Chapter 6 Schematics: • MTDI • GPIO0 • GPIO2 • MTDO • GPIO5 Software can read the values of these five bits from register ”GPIO_STRAPPING”. During the chip’s system reset release (power-on-reset, RTC watchdog reset and brownout 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. The strapping bits configure the device’s boot mode, the operating voltage of VDD_SDIO and other initial system settings. Each strapping pin is connected to its internal pull-up/pull-down during the chip reset. Consequently, if a strapping pin is unconnected or the connected external circuit is high-impedance, the internal weak pull-up/pull-down will determine the default input level of the strapping pins. To change the strapping bit values, users can apply the external pull-down/pull-up resistances, or use the host MCU’s GPIOs to control the voltage level of these pins when powering on ESP32. After reset release, the strapping pins work as normal-function pins. Refer to Table 4 for a detailed boot-mode configuration by strapping pins. Table 4: Strapping Pins Voltage of Internal LDO (VDD_SDIO) Pin MTDI Default 3.3 V 1.8 V Pull-down 0 1 Booting Mode Pin Default SPI Boot Download Boot GPIO0 Pull-up 1 0 GPIO2 Pull-down Don’t-care 0 Enabling/Disabling Debugging Log Print over U0TXD During Booting Pin Default U0TXD Active U0TXD Silent MTDO Pull-up 1 0 Timing of SDIO Slave FE Sampling FE Sampling RE Sampling RE Sampling Pin Default FE Output RE Output FE Output RE Output MTDO Pull-up 0 0 1 1 GPIO5 Pull-up 0 1 0 1 Not Recommended For New Designs (NRND) Espressif Systems 10 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 2 Pin Definitions Note: • Firmware can configure register bits to change the settings of ”Voltage of Internal LDO (VDD_SDIO)” and ”Timing of SDIO Slave” after booting. • Both ESP32-WROOM-32D and ESP32-WROOM-32U integrate a 3.3 V SPI flash, so the pin MTDI cannot be set to 1 when the modules are powered up. Not Recommended For New Designs (NRND) Espressif Systems 11 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 3 Functional Description 3 Functional Description This chapter describes the modules and functions integrated in ESP32-WROOM-32D and ESP32-WROOM-32U. 3.1 CPU and Internal Memory ESP32-D0WD contains a dual-core Xtensa® 32-bit LX6 MCU. The internal memory includes: • 448 KB of ROM for booting and core functions. • 520 KB of on-chip SRAM for data and instructions. • 8 KB of SRAM in RTC, which is called RTC FAST Memory and can be used for data storage; it is accessed by the main CPU during RTC Boot from the Deep-sleep mode. • 8 KB of SRAM in RTC, which is called RTC SLOW Memory and can be accessed by the co-processor during the Deep-sleep mode. • 1 Kbit of eFuse: 256 bits are used for the system (MAC address and chip configuration) and the remaining 768 bits are reserved for customer applications, including flash-encryption and chip-ID. 3.2 External Flash and SRAM ESP32 supports multiple external QSPI flash and SRAM chips. More details can be found in Chapter SPI in the ESP32 Technical Reference Manual. ESP32 also supports hardware encryption/decryption based on AES to protect developers’ programs and data in flash. ESP32 can access the external QSPI flash and SRAM through high-speed caches. • The external flash can be mapped into CPU instruction memory space and read-only memory space simultaneously. – When external flash is mapped into CPU instruction memory space, up to 11 MB + 248 KB can be mapped at a time. Note that if more than 3 MB + 248 KB are mapped, cache performance will be reduced due to speculative reads by the CPU. – When external flash is mapped into read-only data memory space, up to 4 MB can be mapped at a time. 8-bit, 16-bit and 32-bit reads are supported. • External SRAM can be mapped into CPU data memory space. Up to 4 MB can be mapped at a time. 8-bit, 16-bit and 32-bit reads and writes are supported. Both ESP32-WROOM-32D and ESP32-WROOM-32U integrate a 4 MB of external SPI flash. The integrated SPI flash is connected to GPIO6, GPIO7, GPIO8, GPIO9, GPIO10 and GPIO11. These six pins cannot be used as regular GPIOs. 3.3 Crystal Oscillators The module uses a 40-MHz crystal oscillator. Not Recommended For New Designs (NRND) Espressif Systems 12 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 3 Functional Description 3.4 RTC and Low­Power Management With the use of advanced power-management technologies, ESP32 can switch between different power modes. For details on ESP32’s power consumption in different power modes, please refer to section ”RTC and Low-Power Management” in ESP32 Datasheet. Not Recommended For New Designs (NRND) Espressif Systems 13 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 4 Peripherals and Sensors 4 Peripherals and Sensors Please refer to Section Peripherals and Sensors in ESP32 Datasheet. Note: External connections can be made to any GPIO except for GPIOs in the range 6-11. These six GPIOs are connected to the module’s integrated SPI flash. For details, please see Section 6 Schematics. Not Recommended For New Designs (NRND) Espressif Systems 14 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 5 Electrical Characteristics 5 Electrical Characteristics 5.1 Absolute Maximum Ratings Stresses beyond the absolute maximum ratings listed in Table 5 below may cause permanent damage to the device. These are stress ratings only, and do not refer to the functional operation of the device that should follow the recommended operating conditions. Table 5: Absolute Maximum Ratings Symbol Parameter Min Max Unit VDD33 Power supply voltage –0.3 3.6 V Cumulative IO output current - 1,100 mA Storage temperature –40 105 °C Ioutput 1 Tstore 1. The module worked properly after a 24-hour test in ambient temperature at 25 °C, and the IOs in three domains (VDD3P3_RTC, VDD3P3_CPU, VDD_SDIO) output high logic level to ground. Please note that pins occupied by flash and/or PSRAM in the VDD_SDIO power domain were excluded from the test. 2. Please see Appendix IO_MUX of ESP32 Datasheet for IO’s power domain. 5.2 Recommended Operating Conditions Table 6: Recommended Operating Conditions Symbol Parameter Min Typical Max Unit VDD33 Power supply voltage 3.0 3.3 3.6 V IV DD Current delivered by external power supply 0.5 - - A T Operating ambient temperature –40 - 85 °C 5.3 DC Characteristics (3.3 V, 25 °C) Table 7: DC Characteristics (3.3 V, 25 °C) Symbol CIN VIH Parameter Min Pin capacitance - High-level input voltage 0.75×VDD 1 Typ Max 2 - - Unit pF 1 VDD +0.3 V 1 VIL Low-level input voltage –0.3 - 0.25×VDD IIH High-level input current - - 50 nA IIL Low-level input current - - 50 nA VOH High-level output voltage 0.8×VDD1 - - V VOL Low-level output voltage - - 0.1×VDD1 V VDD3P3_CPU power domain 1, 2 - 40 - mA 1, 2 - 40 - mA - 20 - mA High-level source current 1 IOH (VDD = 3.3 V, VOH >= 2.64 V, output drive strength set to the maximum) VDD3P3_RTC power domain VDD_SDIO power domain 1, 3 Not Recommended For New Designs (NRND) Espressif Systems 15 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback V 5 Electrical Characteristics Symbol Parameter Min Typ Max Unit - 28 - mA Low-level sink current (VDD1 = 3.3 V, VOL = 0.495 V, IOL output drive strength set to the maximum) RP U Resistance of internal pull-up resistor - 45 - kΩ RP D Resistance of internal pull-down resistor - 45 - kΩ VIL_nRST Low-level input voltage of CHIP_PU to power off the chip - - 0.6 V Notes: 1. Please see Appendix IO_MUX of ESP32 Datasheet for IO’s power domain. VDD is the I/O voltage for a particular power domain of pins. 2. For VDD3P3_CPU and VDD3P3_RTC power domain, per-pin current sourced in the same domain is gradually reduced from around 40 mA to around 29 mA, VOH >=2.64 V, as the number of current-source pins increases. 3. Pins occupied by flash and/or PSRAM in the VDD_SDIO power domain were excluded from the test. 5.4 Wi­Fi Radio Table 8: Wi­Fi Radio Characteristics Parameter Center frequency range of operating channel Min Typical Max Unit - 2412 - 2484 MHz - - note 2 - Ω 11n, MCS7 12 13 14 dBm 11b mode 17.5 18.5 20 dBm 11b, 1 Mbps - –98 - dBm 11b, 11 Mbps - –89 - dBm 11g, 6 Mbps - –92 - dBm 11g, 54 Mbps - –74 - dBm 11n, HT20, MCS0 - –91 - dBm 11n, HT20, MCS7 - –71 - dBm 11n, HT40, MCS0 - –89 - dBm 11n, HT40, MCS7 - –69 - dBm 11g, 6 Mbps - 31 - dB 11g, 54 Mbps - 14 - dB 11n, HT20, MCS0 - 31 - dB 11n, HT20, MCS7 - 13 - dB note1 Output impedance note2 TX power Condition note3 Sensitivity Adjacent channel rejection 1. Device should operate in the center frequency range of operating channel allocated by regional regulatory authorities. Target center frequency range of operating channel is configurable by software. 2. For the modules that use external antennas, the output impedance is 50 Ω. For other modules without external antennas, users do not need to concern about the output impedance. 3. Target TX power is configurable based on device or certification requirements. Not Recommended For New Designs (NRND) Espressif Systems 16 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 5 Electrical Characteristics 5.5 Bluetooth LE Radio 5.5.1 Receiver Table 9: Receiver Characteristics – Bluetooth LE Parameter Conditions Min Typ Max Unit Sensitivity @30.8% PER - - –97 - dBm Maximum received signal @30.8% PER - 0 - - dBm Co-channel C/I - - +10 - dB F = F0 + 1 MHz - –5 - dB F = F0 – 1 MHz - –5 - dB F = F0 + 2 MHz - –25 - dB F = F0 – 2 MHz - –35 - dB F = F0 + 3 MHz - –25 - dB F = F0 – 3 MHz - –45 - dB 30 MHz ~ 2000 MHz –10 - - dBm 2000 MHz ~ 2400 MHz –27 - - dBm 2500 MHz ~ 3000 MHz –27 - - dBm 3000 MHz ~ 12.5 GHz –10 - - dBm - –36 - - dBm Adjacent channel selectivity C/I Out-of-band blocking performance Intermodulation 5.5.2 Transmitter Table 10: Transmitter Characteristics – Bluetooth LE Parameter Conditions Min Typ Max Unit RF transmit power - - 0 - dBm Gain control step - - 3 - dBm RF power control range - –12 - +9 dBm F = F0 ± 2 MHz - –52 - dBm F = F0 ± 3 MHz - –58 - dBm F = F0 ± > 3 MHz - –60 - dBm ∆ f 1avg - - - 265 kHz ∆ f 2max - 247 - - kHz ∆ f 2avg /∆ f 1avg - - –0.92 - - ICFT - - –10 - kHz Drift rate - - 0.7 - kHz/50 µs Drift - - 2 - kHz Adjacent channel transmit power Not Recommended For New Designs (NRND) Espressif Systems 17 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 5 Electrical Characteristics Temperature (℃) 5.6 Reflow Profile Peak Temp. 235 ~ 250 ℃ 250 Preheating zone 150 ~ 200 ℃ 60 ~ 120 s 217 200 Reflow zone 217 ℃ 60 ~ 90 s Cooling zone –1 ~ –5 ℃/s Soldering time > 30 s Ramp-up zone 1 ~ 3 ℃/s 100 50 25 Time (sec.) 0 0 50 100 150 200 250 Ramp-up zone — Temp.: 25 ~ 150 ℃ Time: 60 ~ 90 s Ramp-up rate: 1 ~ 3 ℃/s Preheating zone — Temp.: 150 ~ 200 ℃ Time: 60 ~ 120 s Reflow zone — Temp.: >217 ℃ 60 ~ 90 s; Peak Temp.: 235 ~ 250 ℃ Time: 30 ~ 70 s Cooling zone — Peak Temp. ~ 180 ℃ Ramp-down rate: –1 ~ –5 ℃/s Solder — Sn-Ag-Cu (SAC305) lead-free solder alloy Figure 2: Reflow Profile Note: Solder the module in a single reflow. Not Recommended For New Designs (NRND) Espressif Systems 18 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 6 Schematics Pin.1 GND The values of C1 and C2 vary with the selection of the crystal. Pin.15 GND D1 LESD8D3.3CAT5G C1 22pF/6.3V(10%) 1 VDD33 C3 100pF 20K(5%) 3 C6 R3 Not Recommended For New Designs (NRND) ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 A GND GND GND The values of C14 、 L4 and C15 vary with the actual PCB board. U0TXD R2 48 47 46 45 44 43 42 41 40 39 Pin.34 U0RXD SCS/CMD Pin.20 CLK U0RXD Pin.33 IO21 SCK/CLK GPIO21 CAP1 CAP2 VDDA XTAL_P XTAL_N VDDA GPIO21 U0TXD U0RXD GPIO22 GND VDD33 C4 0.1uF Pin.7 IO35 VDD_SDIO Pin.21 SD0 GPIO35 Pin.32 NC SDO/SD0 GND C16 NC C17 NC VDDA LNA_IN VDD3P3 VDD3P3 SENSOR_VP SENSOR_CAPP SENSOR_CAPN SENSOR_VN CHIP_PU VDET_1 VDET_2 32K_XP 32K_XN GPIO25 U2 GPIO19 VDD3P3_CPU GPIO23 GPIO18 GPIO5 SD_DATA_1 SD_DATA_0 SD_CLK SD_CMD SD_DATA_3 SD_DATA_2 GPIO17 VDD_SDIO GPIO16 38 37 36 35 34 33 32 31 30 29 28 27 26 25 GPIO19 GPIO23 GPIO18 GPIO5 SDI/SD1 SDO/SD0 SCK/CLK SCS/CMD SWP/SD3 SHD/SD2 GPIO17 GPIO16 U3 SCS/CMD 1 SCK/CLK 6 SHD/SD2 7 Pin.8 IO32 8 1 2 3 4 SENSOR_VP 5 6 7 SENSOR_VN8 CHIP_PU 9 10 GPIO34 11 GPIO35 12 GPIO32 13 GPIO33 14 GPIO25 VCC PCB ANT Pin.6 IO34 /CS CLK /HOLD FLASH GND C14 TBD SWP/SD3 SENSOR_VN GPIO21 U0TXD U0RXD GPIO22 499R DI DO /WP 5 SDI/SD1 2 SDO/SD0 3 SWP/SD3 GND Pin.22 SD1 GPIO32 Pin.9 IO33 Pin.31 IO19 SDI/SD1 Pin.23 IO15 GPIO33 4 C15 TBD GND TBD Pin.10 IO25 GPIO19 Pin.30 IO18 GPIO15 Pin.24 IO2 GPIO25 GPIO18 Pin.29 IO5 GPIO2 GPIO5 VDD_SDIO C18 1uF Pin.11 IO26 ESP32-D0WD GND GPIO13 GPIO15 GPIO2 GPIO0 GPIO4 GND L4 C21 NC GPIO26 GPIO27 MTMS MTDI VDD3P3_RTC MTCK MTDO GPIO2 GPIO0 GPIO4 GND 1 2 C10 0.1uF GPIO22 Pin.35 U0TXD Pin.19 CMD GPIO34 15 16 17 18 19 20 21 22 23 24 ANT1 GND C13 10uF GPIO26 GPIO27 GPIO14 GPIO12 C12 NC 2.0nH GND C11 1uF 49 GND L5 GPIO23 Pin.36 IO22 SHD/SD2 SENSOR_VP 3.3nF/6.3V(10%) GND VDD33 GPIO13 Pin.18 SD3 Pin.5 SENSOR_VN 0R C5 10nF/6.3V(10%) C9 0.1uF 19 Submit Documentation Feedback GND Pin.4 SENSOR_VP GND Pin.37 IO23 Pin.17 SD2 CHIP_PU C2 22pF/6.3V(10%) GND 40MHz+/-10ppm R1 GND Pin.16 IO13 GND C20 1uF C VDD33 Pin.3 CHIP_PU/EN GND 2 XIN GND U1 GND VDD33 GND XOUT 4 GND GND Pin.38 GND GND Pin.2 3V3 B 6 Schematics Espressif Systems D VDD33 C19 0.1uF Pin.28 IO17 GPIO26 GPIO17 Pin.12 IO27 Pin.27 IO16 GPIO27 GPIO16 GND Pin.13 IO14 Pin.26 IO4 GPIO14 Pin.14 IO12 Pin.39 GND GPIO12 Figure 3: ESP32­WROOM­32D Schematics GPIO4 Pin.25 IO0 GND GPIO0 D Pin.2 3V3 1 C5 10nF/6.3V(10%) C6 GND GND GND U0TXD 3 CAP1 CAP2 VDDA XTAL_P XTAL_N VDDA GPIO21 U0TXD U0RXD GPIO22 GND Pin.34 U0RXD SCS/CMD Pin.20 CLK U0RXD Pin.33 IO21 SCK/CLK GPIO21 Pin.7 IO35 VDD_SDIO Pin.21 SD0 GPIO35 Pin.32 NC SDO/SD0 GND TBD C14 TBD VDD33 C4 0.1uF C16 NC C17 NC The values of C14 、 L4 and C15 vary with the actual PCB board. 1 2 3 4 SENSOR_VP 5 6 7 SENSOR_VN8 CHIP_PU 9 10 GPIO34 11 GPIO35 12 GPIO32 13 GPIO33 14 GPIO25 VDDA LNA_IN VDD3P3 VDD3P3 SENSOR_VP SENSOR_CAPP SENSOR_CAPN SENSOR_VN CHIP_PU VDET_1 VDET_2 32K_XP 32K_XN GPIO25 38 37 36 35 34 33 32 31 30 29 28 27 26 25 GPIO19 GPIO23 GPIO18 GPIO5 SDI/SD1 SDO/SD0 SCK/CLK SCS/CMD SWP/SD3 SHD/SD2 GPIO17 GPIO16 GPIO13 GPIO15 GPIO2 GPIO0 GPIO4 GPIO26 GPIO27 GPIO14 GPIO12 U3 SCS/CMD 1 SCK/CLK 6 SHD/SD2 7 Pin.8 IO32 /CS CLK /HOLD FLASH DI DO /WP 5 SDI/SD1 2 SDO/SD0 3 SWP/SD3 GND Pin.22 SD1 GPIO32 Pin.9 IO33 Pin.31 IO19 SDI/SD1 Pin.23 IO15 GPIO33 Pin.10 IO25 GPIO19 Pin.30 IO18 GPIO15 Pin.24 IO2 GPIO25 GPIO18 Pin.29 IO5 GPIO2 GPIO5 VDD_SDIO C18 1uF Pin.11 IO26 ESP32-D0WD GND Not Recommended For New Designs (NRND) ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 U2 GPIO19 VDD3P3_CPU GPIO23 GPIO18 GPIO5 SD_DATA_1 SD_DATA_0 SD_CLK SD_CMD SD_DATA_3 SD_DATA_2 GPIO17 VDD_SDIO GPIO16 8 GND C21 NC VCC C15 TBD 3 2 L4 SWP/SD3 GND GND 1 Pin.6 IO34 4 GND C10 0.1uF IPEX J39 2.0nH GPIO26 GPIO27 MTMS MTDI VDD3P3_RTC MTCK MTDO GPIO2 GPIO0 GPIO4 GND C13 10uF GPIO22 Pin.35 U0TXD Pin.19 CMD GPIO34 15 16 17 18 19 20 21 22 23 24 GND 20 Submit Documentation Feedback C12 NC 49 GND L5 SHD/SD2 SENSOR_VN GPIO21 U0TXD U0RXD GPIO22 499R 48 47 46 45 44 43 42 41 40 39 GND C11 1uF R3 3.3nF/6.3V(10%) R2 C9 0.1uF VDD33 GPIO23 Pin.36 IO22 Pin.18 SD3 Pin.5 SENSOR_VN 20K(5%) 0R GND GPIO13 Pin.17 SD2 SENSOR_VP GND 40MHz+/-10ppm R1 GND Pin.4 SENSOR_VP GND Pin.37 IO23 GND C20 1uF C VDD33 Pin.16 IO13 CHIP_PU C2 22pF/6.3V(10%) 2 XIN C1 22pF/6.3V(10%) Pin.3 CHIP_PU/EN GND GND XOUT 4 U1 Pin.38 GND GND VDD33 GND GND C3 100pF A D1 LESD8D3.3CAT5G GND VDD33 B Pin.15 GND GND VDD33 C19 0.1uF Pin.28 IO17 GPIO26 GPIO17 Pin.12 IO27 Pin.27 IO16 GPIO27 GPIO16 GND Pin.13 IO14 Pin.26 IO4 GPIO14 Pin.14 IO12 GPIO12 Figure 4: ESP32­WROOM­32U Schematics GPIO4 Pin.39 GND Pin.25 IO0 GND GPIO0 6 Schematics Espressif Systems Pin.1 GND The values of C1 and C2 vary with the selection of the crystal. C1 10uF C2 0.1uF GND GND GND C3 TBD EN GND2 IO13 SD2 SD3 CMD CLK SD0 SD1 IO15 IO2 P_GND GND3 IO23 IO22 TXD0 RXD0 IO21 NC IO19 IO18 IO5 IO17 IO16 IO4 IO0 15 16 17 18 19 20 21 22 23 24 U2 MTMS MTDI MTCK MTDO 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 J1 IO23 IO22 TXD RXD IO21 GND IO19 IO18 IO5 IO17 IO16 IO4 IO0 GND J2 BOOT OPTION GND 1 2 3 4 R2 R3 R4 R5 100R 100R 100R 100R MTMS MTDI MTCK MTDO IO2 Not Recommended For New Designs (NRND) ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 GND1 3V3 EN SENSOR_VP SENSOR_VN IO34 IO35 IO32 IO33 IO25 IO26 IO27 IO14 IO12 3 2 1 1 2 3 SENSOR_VP 4 SENSOR_VN 5 6 IO34 7 IO35 8 IO32 9 IO33 10 IO25 11 IO26 12 IO27 13 14 SD2 SD3 CMD CLK SD0 SD1 GND UART DOWNLOAD U1 1 2 R1 TBD 21 B 7 Peripheral Schematics VDD33 VDD33 Submit Documentation Feedback C 7 Peripheral Schematics Espressif Systems D JTAG MTDI should be kept at a low electric level when powering up the module. Figure 5: ESP32­WROOM­32D & ESP32­WROOM­32U Peripheral Schematics A Espressif Systems Title • Soldering Pad 39 to the Ground is not necessary for a satisfactory thermal performance. 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 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 kΩ and C = 1 µF. 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’s power-up and reset sequence timing diagram, please refer to Section Power Scheme in ESP32 Datasheet. 7 Peripheral Schematics Espressif Systems Note: 22 Not Recommended For New Designs (NRND) ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 8 Physical Dimensions 8 Physical Dimensions Unit: mm 6.19 0.85 0.80 0 Ø0.5 10.50 10.29 0.90 1.27 15.80 1.50 3.60 3.60 0.1 17.60 0.90 16.51 25.50±0.15 0.45 0.90 6.19 3.10±0.15 1.05 0.85 8.89 11.43 18.00±0.15 Top View Side View Bottom View Figure 6: Physical Dimensions of ESP32­WROOM­32D Not Recommended For New Designs (NRND) Espressif Systems 23 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 8 Physical Dimensions 3.07 Unit: mm 0.45 3.20±0.15 3.27 0.85 0.80 10.50 10.29 3.60 0.90 13.05 1.15 1.27 8.89 3.60 0.90 0.1 17.50 0.90 16.51 15.65 1.50 19.20±0.15 10.75 0.85 1.18 11.43 18.00±0.15 Top View Side View Bottom View Figure 7: Physical Dimensions of ESP32­WROOM­32U Note: For information about tape, reel, and product marking, please refer to Espressif Module Package Information. Not Recommended For New Designs (NRND) Espressif Systems 24 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 9 Recommended PCB Land Pattern 9 Recommended PCB Land Pattern Unit: mm Via for thermal pad Copper 6.19 18.00 Antenna Area 38x1.50 3.70 0.90 0.50 16.51 14 15 0.50 1.50 7.50 38 10.29 0.50 0.90 3.70 1.27 1.50 25.50 38x0.90 1 24 25 1.27 0.50 11.43 3.28 Figure 8: Recommended PCB Land Pattern of ESP32­WROOM­32D Not Recommended For New Designs (NRND) Espressif Systems 25 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 9 Recommended PCB Land Pattern Unit: mm Via for thermal pad Copper 18.00 38x1.50 3.70 0.90 0.50 16.51 14 15 0.50 1.50 7.50 38 10.29 0.50 0.90 3.70 1.27 1.50 19.20 38x0.90 1 24 25 1.27 0.50 11.43 3.28 Figure 9: Recommended PCB Land Pattern of ESP32­WROOM­32U Not Recommended For New Designs (NRND) Espressif Systems 26 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 10 Dimensions of External Antenna Connector 10 Dimensions of External Antenna Connector Unit: mm Figure 10: Dimensions of External Antenna Connector of ESP32­WROOM­32U Not Recommended For New Designs (NRND) Espressif Systems 27 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback 11 Related Documentation and Resources 11 Related Documentation and Resources Related Documentation • ESP32 Technical Reference Manual – Detailed information on how to use the ESP32 memory and peripherals. • ESP32 Hardware Design Guidelines – Guidelines on how to integrate the ESP32 into your hardware product. • ESP32 ECO and Workarounds for Bugs – Correction of ESP32 design errors. • Certificates https://espressif.com/en/support/documents/certificates • ESP32 Product/Process Change Notifications (PCN) https://espressif.com/en/support/documents/pcns • ESP32 Advisories – Information on security, bugs, compatibility, component reliability. https://espressif.com/en/support/documents/advisories • Documentation Updates and Update Notification Subscription https://espressif.com/en/support/download/documents Developer Zone • ESP-IDF Programming Guide for ESP32 – Extensive documentation for the ESP-IDF development framework. • ESP-IDF and other development frameworks on GitHub. https://github.com/espressif • ESP32 BBS Forum – Engineer-to-Engineer (E2E) Community for Espressif products where you can post questions, share knowledge, explore ideas, and help solve problems with fellow engineers. https://esp32.com/ • The ESP Journal – Best Practices, Articles, and Notes from Espressif folks. https://blog.espressif.com/ • See the tabs SDKs and Demos, Apps, Tools, AT Firmware. https://espressif.com/en/support/download/sdks-demos Products • ESP32 Series SoCs – Browse through all ESP32 SoCs. https://espressif.com/en/products/socs?id=ESP32 • ESP32 Series Modules – Browse through all ESP32-based modules. https://espressif.com/en/products/modules?id=ESP32 • ESP32 Series DevKits – Browse through all ESP32-based devkits. https://espressif.com/en/products/devkits?id=ESP32 • ESP Product Selector – Find an Espressif hardware product suitable for your needs by comparing or applying filters. https://products.espressif.com/#/product-selector?language=en Contact Us • See the tabs Sales Questions, Technical Enquiries, Circuit Schematic & PCB Design Review, Get Samples (Online stores), Become Our Supplier, Comments & Suggestions. https://espressif.com/en/contact-us/sales-questions Not Recommended For New Designs (NRND) Espressif Systems 28 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback Revision History Revision History Date Version Release notes Updated Table 1 Added a link to RF certificates in Table 2 2022.03 v2.3 Updated Table 5 Added a note below Figure 7 Updated the description to the connector Added Section 11: Related Documentation and Resources Replaced Espressif Product Ordering Information with ESP Product Selector 2021.08 v2.2 Updated the description of TWAI in Table 1 Labeled this document as (Not Recommended For New Designs) Updated Figure 6: Physical Dimensions of ESP32-WROOM-32D, Figure 7: Physical Dimensions of ESP32-WROOM-32U, Figure 8: Recommended PCB Land Pattern of ESP32-WROOM-32D, and Figure 9: Recommended PCB Land Pattern of ESP32- 2021.02 V2.1 WROOM-32U. Modified the note below Figure 2: Reflow Profile. Modified the note below Figure 5: ESP32-WROOM-32D & ESP32-WROOM-32U Peripheral Schematics. Updated the trade mark from TWAI™ to TWAI® . Added TWAITM in Table 1; 2020.11 V2.0 Added a note under Figure 2: Reflow Profile; Updated the C value in RC delay circuit from 0.1 µF to 1 µF; Provided feedback link. • Changed the supply voltage range from 2.7 V ~ 3.6 V to 3.0 V ~ 3.6 V; • Added Moisture sensitivity level (MSL) 3 in Table 2 ESP32-WROOM-32D and ESP32-WROOM-32U Specifications; 2019.09 V1.9 • Added notes about ”Operating frequency range” and ”TX power” under Table 8 Wi-Fi Radio Characteristics; • Updated Section 7 Peripheral Schematics and added a note about RC delay circuit under it; • Updated Figure 8 and Figure 9 Recommended PCB Land Pattern. 2019.01 V1.8 Changed the RF power control range in Table 10 from –12 ~ +12 to –12 ~ +9 dBm. Added notice on module custom options under Table 2; 2018.10 V1.7 Added ”Cumulative IO output current” entry to Table 5: Absolute Maximum Ratings; Added more parameters to Table 7: DC Characteristics. 2018.09 V1.6 Updated the hole diameter in the shield from 1.00 mm to 0.50 mm, in Figure 6. • Added certifications and reliability test items the module has passed in Table 2: ESP32-WROOM-32D and ESP32-WROOM-32U Specifications, and removed software-specific information; 2018.08 V1.5 • Updated section 3.4: RTC and Low-Power Management; • Changed the modules’ dimensions; • Updated Figure 8 and 7: Physical Dimensions; • Updated Table 8: Wi-Fi Radio. Not Recommended For New Designs (NRND) Espressif Systems 29 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback Revision History Date Version Release notes • Deleted Temperature Sensor in Table 2: ESP32-WROOM-32D & ESP32WROOM-32U Specifications; • Updated Chapter 3: Functional Description; • Added notes to Chapter 7: Peripheral Schematics; • Added Chapter 8: Recommended PCB Land Pattern; 2018.06 V1.4 Changes to electrical characteristics: • Updated Table 5: Absolute Maximum Ratings; • Added Table 6: Recommended Operating Conditions; • Added Table 7: DC Characteristics; • Updated the values of ”Gain control step”, ”Adjacent channel transmit power” in Table 10: Transmitter Characteristics - BLE. 2018.04 V1.3 2018.02 V1.2 Updated Figure 4 ESP32-WROOM-32U Schematics and Figure 3 ESP32-WROOM32D Schematics. Update Figure 4 ESP32-WROOM-32U Schematics. Updated Chapter 6 Schematics. Deleted description of low-noise amplifier. 2018.02 V1.1 Replaced the module name ESP-WROOM-32D with ESP32-WROOM-32D. Added information about module certification in Table 2. Updated the description of eFuse bits in Section 3.1. 2017.11 V1.0 First release. Not Recommended For New Designs (NRND) Espressif Systems 30 ESP32-WROOM-32D & ESP32-WROOM-32U Datasheet v2.3 Submit Documentation Feedback Disclaimer and Copyright Notice Information in this document, including URL references, is subject to change without notice. ALL THIRD PARTY’S INFORMATION IN THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES TO ITS AUTHENTICITY AND ACCURACY. NO WARRANTY IS PROVIDED TO THIS DOCUMENT FOR ITS MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, NOR DOES 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 document 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. www.espressif.com All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright © 2022 Espressif Systems (Shanghai) Co., Ltd. All rights reserved. Not Recommended For New Designs (NRND)
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ESP32-WROOM-32U
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