Users Manual

FCC ID: 2AC7Z-ESPWROOM32

Users Manual

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FCCID_3212970

ESP-WROOM-32 Datasheet Espressif Systems September 26, 2016

About This Guide This document lists the specifications for the ESP-WROOM-32 module. The document structure is as follows: Chapter Title Subject Chapter 1 Preface A preview of ESP-WROOM-32 Chapter 2 Pin Definitions Device pinout and pin descriptions Chapter 3 Functional Description Description of major functional modules and protocols Chapter 4 Electrical Characteristics Electrical characteristics and specifications for ESP-WROOM-32 Chapter 5 Schematics The schematics of ESP-WROOM-32 Release Notes Date Version Release notes 2016.08 V1.0 First release 2016.09 V1.1 Updated Chapter 5: Schematics Disclaimer and Copyright Notice 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 © 2016 Espressif Inc. All rights reserved.

Contents 1 Preface 1 2 Pin Definitions 3 2.1 Pin Layout 3 2.2 Pin Description 4 2.3 Strapping Pins 5 3 Functional Description 6 3.1 CPU and Internal Memory 6 3.2 External Flash and SRAM 6 3.3 Crystal Oscillators 6 3.4 Power Consumption 7 3.5 Peripheral Interface Description 8 4 Electrical Characteristics 13 4.1 Absolute Maximum Ratings 13 4.2 Recommended Operating Conditions 13 4.3 Digital Terminal Characteristics 13 4.4 Wi-Fi Radio 14 4.5 Bluetooth LE Radio 14 4.5.1 Receiver 14 4.5.2 Transmit 15 4.6 Reflow Profile 15 5 Schematics 16

List of Tables 1 ESP-WROOM-32 Specifications 2 2 ESP-WROOM-32 Dimensions 3 3 ESP-WROOM-32 Pin Definitions 4 4 Strapping Pins 5 5 Power Consumption by Power Modes 7 6 Interface Description 8 7 Absolute Maximum Ratings 13 8 Recommended Operating Conditions 13 9 Digital Terminal Characteristics 13 10 Wi-Fi Radio Characteristics 14 11 Receiver Characteristics - BLE 14 12 Transmit Characteristics - BLE 15 13 Reflow Profile 15

List of Figures 1 Top and Side View of ESP-WROOM-32 3 2 ESP-WROOM-32 Schematics 16 FCC Caution: 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. 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. To satisfy FCC RF Exposure requirements for this transmission devices, a separation distance of 20cm or more should be maintained between the antenna of this device and persons during operation. To ensure compliance, operation at closer than this distance is not recommended. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number： (A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID:2AC7Z-ESPWROOM32.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization.

1 PREFACE 1. Preface ESP-WROOM-32 is a powerful, generic WiFi-BT-BLE MCU module that targets 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. At the core of this module is the ESP32 chip, which is designed to be scalable and adaptive. There are 2 CPU cores that can be individually controlled or powered, and the clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low power coprocessor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, low noise sense amplifiers, SD card interface, Ethernet, high speed SDIO/SPI, UART, I2S and I2C. The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that it is future proof: 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. ESP-WROOM-32 supports data rates up to 150 Mbps, and 22 dBm output power at the PA to ensure the widest physical range. As such the chip does offer industry leading specifications and the best optimized performance for electronic integration, range and 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 developers can continually upgrade their products even after their release. The software releases are covered under the ESP32 bug bounty program and any bugs can be reported to bugbounty@espressif.com. As the SDK of ESP-WROOM-32 or ESP32 is open- source, the user can build his own platforms and operating systems. For more in-depth discussion of this, the developer can contact john.lee@espressif.com. ESP-WROOM-32 has Espressif’s long term support — ESP32 will be covered under Espressif’s longevity program and be available for the next 12 years. The design of ESP-WROOM-32 will be open-source when it has been fully optimized. Feedbacks about the module, chip, API or firmware can be sent to feedback@espressif.com. Table 1 provides the specifications of ESP-WROOM-32. Espressif Systems 1 http://www.espressif.com

1 PREFACE Table 1: ESP-WROOM-32 Specifications Categories Items Specifications Standards FCC, CE, TELEC, KCC 802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps) Wi-Fi Protocols A-MPDU and A-MSDU aggregation and 0.4 µs guard interval support Frequency range 2.4 ~ 2.5 GHz Protocols Bluetooth v4.2 BR/EDR and BLE specification NZIF receiver with -98 dBm sensitivity Bluetooth 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, I2C, IR Module interface GPIO, capacitive touch sensor, ADC, DAC, LNA pre-amplier On-chip sensor Hall sensor, temperature sensor Hardware On-board clock 26 MHz crystal, 32 kHz crystal Operating voltage 2.2 ~ 3.6V Operating current Average: 80 mA Operating temperature range -40°C ~ 85°C * Ambient temperature range Normal temperature Package size 18 mm x 25.5 mm x 2.8 mm Wi-Fi mode Station/softAP/SoftAP+station/P2P Security WPA/WPA2/WPA2-Enterprise/WPS Encryption AES/RSA/ECC/SHA UART Download / OTA (via network) / download Firmware upgrade Software and write firmware via host Supports Cloud Server Development / SDK for Software development custom firmware development Network protocols IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT User configuration AT instruction set, cloud server, Android/iOS App Note: * ESP-WROOM-32 with high temperature range option (-40°C ~ 125°C) is available for custom order. Espressif Systems 2 http://www.espressif.com

2.1 Pin Layout 2 PIN DEFINITIONS 2. Pin Definitions 2.1 Pin Layout 18.00 6.00 Keepout Zone 1.50 1 GND GND 38 1.27 2 3V3 IO23 37 3 EN IO22 36 6.00 4 SENSOR_VP TXD0 35 25.50 5 SENSOR_VN RXD0 34 6 IO34 IO21 33 6.30 7 IO35 1:GND 6.00 NC 32 8 IO32 IO19 31 9 IO33 IO18 30 10 IO25 IO5 29 11 IO26 IO17 28 12 IO27 7.30 IO16 27 13 IO14 IO4 26 CMD IO15 SD0 GND SD3 SD2 IO13 CLK SD1 IO2 0.90 14 IO12 IO0 25 Unit: mm 20 24 23 22 18 16 19 21 15 17 0.45 3.30 1.27 3.30 2.00 Shielding 6.00 0.80 ± 0.10 PCB 25.50 Figure 1: Top and Side View of ESP-WROOM-32 Table 2: ESP-WROOM-32 Dimensions Length Width Height PAD size (bottom) Pin pitch Shielding can height PCB thickness 18 mm 25.5 mm 2.8 ± 0.1 mm 0.45 mm x 0.9 mm 1.27 mm 2 mm 0.8 ± 0.1 mm Espressif Systems 3 http://www.espressif.com

2.2 Pin Description 2 PIN DEFINITIONS 2.2 Pin Description ESP-WROOM-32 has 38 pins. See pin definitions in Table 3. Table 3: ESP-WROOM-32 Pin Definitions Name No. Function GND 1 Ground 3V3 2 Power supply. EN 3 Chip-enable signal. Active high. SENSOR_VP 4 GPI36, SENSOR_VP, ADC_H, ADC1_CH0, RTC_GPIO0 SENSOR_VN 5 GPI39, SENSOR_VN, ADC1_CH3, ADC_H, RTC_GPIO3 IO34 6 GPI34, ADC1_CH6, RTC_GPIO4 IO35 7 GPI35, ADC1_CH7, RTC_GPIO5 GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4, IO32 8 TOUCH9, RTC_GPIO9 GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output), ADC1_CH5, IO33 9 TOUCH8, RTC_GPIO8 IO25 10 GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0 IO26 11 GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1 IO27 12 GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, IO14 13 SD_CLK, EMAC_TXD2 GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, IO12 14 SD_DATA2, EMAC_TXD3 GND 15 Ground GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, IO13 16 SD_DATA3, EMAC_RX_ER SHD/SD2 17 GPIO9, SD_DATA2, SPIHD, HS1_DATA2, U1RXD SWP/SD3 18 GPIO10, SD_DATA3, SPIWP, HS1_DATA3, U1TXD SCS/CMD 19 GPIO11, SD_CMD, SPICS0, HS1_CMD, U1RTS SCK/CLK 20 GPIO6, SD_CLK, SPICLK, HS1_CLK, U1CTS SDO/SD0 21 GPIO7, SD_DATA0, SPIQ, HS1_DATA0, U2RTS SDI/SD1 22 GPIO8, SD_DATA1, SPID, HS1_DATA1, U2CTS GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, HS2_CMD, IO15 23 SD_CMD, EMAC_RXD3 GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, IO2 24 SD_DATA0 IO0 25 GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, IO4 26 SD_DATA1, EMAC_TX_ER IO16 27 GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT IO17 28 GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180 IO5 29 GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK IO18 30 GPIO18, VSPICLK, HS1_DATA7 IO19 31 GPIO19, VSPIQ, U0CTS, EMAC_TXD0 NC 32 - Espressif Systems 4 http://www.espressif.com

2.3 Strapping Pins 2 PIN DEFINITIONS Name No. Function IO21 33 GPIO21, VSPIHD, EMAC_TX_EN RXD0 34 GPIO3, U0RXD, CLK_OUT2 TXD0 35 GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2 IO22 36 GPIO22, VSPIWP, U0RTS, EMAC_TXD1 IO23 37 GPIO23, VSPID, HS1_STROBE GND 38 Ground 2.3 Strapping Pins ESP32 has 6 strapping pins. Software can read the value of these 6 bits from the register ”GPIO_STRAPPING”. During the chip power-on 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. Each strapping pin is connected with its internal pull-up/pull-down during the chip reset. Consequently, if a strap- ping pin is unconnected or the connected external circuit is high-impendence, 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 apply the host MCU’s GPIOs to control the voltage level of these pins when powering on ESP32. After reset, the strapping pins work as the normal functions pins. Refer to Table 4 for detailed boot modes configuration by strapping pins. Table 4: Strapping Pins Voltage of Internal LDO (VDD_SDIO) Pin Default 3.3V 1.8V MTDI Pull-down 0 1 Booting Mode Pin Default SPI Flash Boot Download Boot GPIO0 Pull-up 1 0 GPIO2 Pull-down Don’t-care 0 Debugging Log on U0TXD During Booting Pin Default U0TXD Toggling U0TXD Silent MTDO Pull-up 1 0 Timing of SDIO Slave Falling-edge Input Falling-edge Input Rising-edge Input Rising-edge Input Pin Default Falling-edge Output Rising-edge Output Falling-edge Output Rising-edge Output MTDO Pull-up 0 0 1 1 GPIO5 Pull-up 0 1 0 1 Note: Firmware can configure register bits to change the settings of ”Voltage of Internal LDO (VDD_SDIO)” and ”Timing of SDIO Slave” after booting. Espressif Systems 5 http://www.espressif.com

3 FUNCTIONAL DESCRIPTION 3. Functional Description This chapter describes the modules and functions implemented in ESP-WROOM-32. 3.1 CPU and Internal Memory ESP32 contains two low-power Xtensa® 32-bit LX6 microprocessors. The internal memory includes: • 448 KBytes ROM for booting and core functions. • 520 KBytes on-chip SRAM for data and instruction. • 8 KBytes SRAM in RTC, which is called RTC SLOW Memory and can be accessed by the co-processor during the Deep-sleep mode. • 8 KBytes SRAM in RTC, which is called RTC FAST Memory and can be used for data storage and accessed by the main CPU during RTC Boot from the Deep-sleep mode. • 1 Kbit of EFUSE, of which 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 4 x 16 MBytes of external QSPI flash and SRAM with hardware encryption based on AES to protect developer’s programs and data. ESP32 accesses external QSPI flash and SRAM by the high-speed caches. Up to 16 MBytes of external flash are memory mapped into the CPU code space, supporting 8, 16 and 32-bit access. Code execution is supported. Up to 8 MBytes of external SRAM are memory mapped into the CPU data space, supporting 8, 16 and 32-bit access. Data read is supported on the flash and SRAM. Data write is supported on the SRAM. 3.3 Crystal Oscillators The frequencies of the main crystal oscillator supported include 40 MHz, 26 MHz and 24 MHz. The accuracy of crystal oscillators applied should be ±10 PPM, and the operating temperature range -40°C to 85°C. When using the downloading tools, remember to select the right crystal oscillator type. In circuit design, capacitors C1 and C2 that connect to the earth, are added to the input and output terminals of the crystal oscillator respectively. The values of the two capacitors can be flexible, ranging from 6 pF to 22 pF. However, the specific capacitive values of C1 and C2 depend on further testing and adjustment of the overall performance of the whole circuit. Normally, the capacitive values of C1 and C2 are within 10 pF if the crystal oscillator frequency is 26 MHz, while 10 pF<C1 and C2<22 pF if the crystal oscillator frequency is 40 MHz. The frequency of the RTC crystal oscillator is typically 32 kHz or 32.768 kHz. The accuracy can be out of the range of ±20 PPM, since the internal calibration is applied to correct the frequency offset. When the chip operates in low power modes, the application chooses the external low speed (32 kHz) crystal clock rather than the internal RC oscillators to achieve the accurate wakeup time. Espressif Systems 6 http://www.espressif.com

3.4 Power Consumption 3 FUNCTIONAL DESCRIPTION 3.4 Power Consumption With the advanced power management technology, ESP32 can switch between different power modes as fol- lows: • Power mode – Active mode: chip radio is powered on. The chip can receive, transmit, or listen. – Modem-sleep mode: the CPU is operational and the clock is configurable. Wi-Fi / Bluetooth baseband and radio are disabled. – Light-sleep mode: the CPU is paused. The RTC and ULP-coprocessor are running. Any wake-up events (MAC, host, RTC timer, or external interrupts) will wake up the chip. – Deep-sleep mode: Only RTC is powered on. Wi-Fi and Bluetooth connection data are stored in RTC memory. The ULP-coprocessor can work. – Hibernation mode: The internal 8MHz oscillator and ULP-coprocessor are disabled. The RTC recovery memory are power-down. Only one RTC timer on the slow clock and some RTC GPIOs are active. The RTC timer or the RTC GPIOs can wake up the chip from the Hibernation mode. • Sleep Pattern – Association sleep pattern: The power mode switches between the active mode and Modem-sleep/Light- sleep mode during this sleep pattern. The CPU, Wi-Fi, Bluetooth, and radio wake up at pre-determined intervals to keep Wi-Fi / BT connections alive. – ULP sensor-monitored pattern: The main CPU is in the Deep-sleep mode. The ULP co-processor does sensor measurements and wakes up the main system, based on the measured data from sensors. The power consumption varies with different power modes/sleep patterns and work status of functional modules (see Table 5). Table 5: Power Consumption by Power Modes Power mode Comment Power consumption Wi-Fi Tx packet 13 dBm ~ 21 dBm 160 ~ 260 mA Wi-Fi / BT Tx packet 0 dBm 120 mA Active mode (RF working) Wi-Fi / BT Rx and listening 80 ~ 90 mA Association sleep pattern (by Light- 0.9 mA@DTIM3, 1.2 mA@DTIM1 sleep) Max speed: 20 mA Modem-sleep mode The CPU is powered on. Normal: 5 ~ 10 mA Slow speed: 3 mA Light-sleep mode - 0.8 mA The ULP-coprocessor is powered on. 0.5 mA Deep-sleep mode ULP sensor-monitored pattern 25 µA @1% duty RTC timer + RTC memories 20 µA Hibernation mode RTC timer only 2.5 µA Espressif Systems 7 http://www.espressif.com

3.5 Peripheral Interface Description 3 FUNCTIONAL DESCRIPTION 3.5 Peripheral Interface Description Table 6: Interface Description Interface Signal Pin Function ADC1_CH0 SENSOR_VP ADC1_CH3 SENSOR_VN ADC1_CH4 IO32 ADC1_CH5 IO33 ADC1_CH6 IO34 ADC1_CH7 IO35 ADC2_CH0 IO4 ADC ADC2_CH1 IO0 Two 12-bit SAR ADCs ADC2_CH2 IO2 ADC2_CH3 IO15 ADC2_CH4 IO13 ADC2_CH5 IO12 ADC2_CH6 IO14 ADC2_CH7 IO27 ADC2_CH8 IO25 ADC2_CH9 IO26 Ultra Low Noise SENSOR_VP IO36 Provides about 60dB gain by using larger Analog Pre-Amplifier SENSOR_VN IO39 capacitors on PCB DAC_1 IO25 DAC Two 8-bit DACs DAC_2 IO26 TOUCH0 IO4 TOUCH1 IO0 TOUCH2 IO2 TOUCH3 IO15 TOUCH4 IO13 Touch Sensor Capacitive touch sensors TOUCH5 IO12 TOUCH6 IO14 TOUCH7 IO27 TOUCH8 IO33 TOUCH9 IO32 HS2_CLK MTMS HS2_CMD MTDO SD / SDIO / MMC HS2_DATA0 IO2 Supports SD memory card V3.01 standard Host Controller HS2_DATA1 IO4 HS2_DATA2 MTDI HS2_DATA3 MTCK Espressif Systems 8 http://www.espressif.com

3.5 Peripheral Interface Description 3 FUNCTIONAL DESCRIPTION Interface Signal Pin Function PWM0_OUT0~2 PWM1_OUT_IN0~2 Three channels of 16-bit timers generate PWM0_FLT_IN0~2 PWM waveforms; each has a pair of PWM1_FLT_IN0~2 Motor PWM Any GPIO output signals. Three fault detection PWM0_CAP_IN0~2 signals. Three even capture signals. Three PWM1_CAP_IN0~2 sync signals. PWM0_SYNC_IN0~2 PWM1_SYNC_IN0~2 ledc_hs_sig_out0~7 16 independent channels @80MHz LED PWM Any GPIO ledc_ls_sig_out0~7 clock/RTC CLK. Duty accuracy: 16bits. U0RXD_in U0CTS_in U0DSR_in U0TXD_out U0RTS_out U0DTR_out U1RXD_in Two UART devices with hardware UART Any GPIO U1CTS_in flow-control and DMA U1TXD_out U1RTS_out U2RXD_in U2CTS_in U2TXD_out U2RTS_out I2CEXT0_SCL_in I2CEXT0_SDA_in I2CEXT1_SCL_in I2CEXT1_SDA_in I2C Any GPIO Two I2C devices in slave or master modes I2CEXT0_SCL_out I2CEXT0_SDA_out I2CEXT1_SCL_out I2CEXT1_SDA_out Espressif Systems 9 http://www.espressif.com

3.5 Peripheral Interface Description 3 FUNCTIONAL DESCRIPTION Interface Signal Pin Function I2S0I_DATA_in0~15 I2S0O_BCK_in I2S0O_WS_in I2S0I_BCK_in I2S0I_WS_in I2S0I_H_SYNC I2S0I_V_SYNC I2S0I_H_ENABLE I2S0O_BCK_out I2S0O_WS_out I2S0I_BCK_out I2S0I_WS_out Stereo input and output from/to the audio I2S I2S0O_DATA_out0~23 Any GPIO codec, and parallel LCD data output I2S1I_DATA_in0~15 I2S1O_BCK_in I2S1O_WS_in I2S1I_BCK_in I2S1I_WS_in I2S1I_H_SYNC I2S1I_V_SYNC I2S1I_H_ENABLE I2S1O_BCK_out I2S1O_WS_out I2S1I_BCK_out I2S1I_WS_out I2S1O_DATA_out0~23 RMT_SIG_IN0~7 Eight channels of IR transmitter and Remote Controller Any GPIO RMT_SIG_OUT0~7 receiver for various waveforms Espressif Systems 10 http://www.espressif.com

3.5 Peripheral Interface Description 3 FUNCTIONAL DESCRIPTION Interface Signal Pin Function SPIHD SHD/SD2 SPIWP SWP/SD3 SPICS0 SCS/CMD SPICLK SCK/CLK SPIQ SDO/SD0 SPID SDI/SD1 HSPICLK IO14 HSPICS0 IO15 Supports Standard SPI, Dual SPI, and Parallel QSPI HSPIQ IO12 Quad SPI that can be connected to the HSPID IO13 external flash and SRAM HSPIHD IO4 HSPIWP IO2 VSPICLK IO18 VSPICS0 IO5 VSPIQ IO19 VSPID IO23 VSPIHD IO21 VSPIWP IO22 HSPIQ_in/_out Standard SPI consists of clock, HSPID_in/_out chip-select, MOSI and MISO. These SPIs HSPICLK_in/_out can be connected to LCD and other HSPI_CS0_in/_out external devices. They support the HSPI_CS1_out following features: General Purpose HSPI_CS2_out Any GPIO (a) both master and slave modes; SPI VSPIQ_in/_out (b) 4 sub-modes of the SPI format transfer VSPID_in/_out that depend on the clock phase (CPHA) VSPICLK_in/_out and clock polarity (CPOL) control.; VSPI_CS0_in/_out (c) CLK frequencies by a divider; VSPI_CS1_out (d) up to 64byte FIFO and DMA. VSPI_CS2_out MTDI IO12 MTCK IO13 JTAG JTAG for software debugging MTMS IO14 MTDO IO15 Espressif Systems 11 http://www.espressif.com

3.5 Peripheral Interface Description 3 FUNCTIONAL DESCRIPTION Interface Signal Pin Function SD_CLK IO6 SD_CMD IO11 SDIO interface that conforms to the SD_DATA0 IO7 SDIO Slave industry standard SDIO 2.0 card SD_DATA1 IO8 specification. SD_DATA2 IO9 SD_DATA3 IO10 EMAC_TX_CLK IO0 EMAC_RX_CLK IO5 EMAC_TX_EN IO21 EMAC_TXD0 IO19 EMAC_TXD1 IO22 EMAC_TXD2 IO14 EMAC_TXD3 IO12 EMAC_RX_ER IO13 EMAC_RX_DV IO27 EMAC_RXD0 IO25 EMAC Ethernet MAC with MII/RMII interface EMAC_RXD1 IO26 EMAC_RXD2 TXD EMAC_RXD3 IO15 EMAC_CLK_OUT IO16 EMAC_CLK_OUT_180 IO17 EMAC_TX_ER IO4 EMAC_MDC_out Any GPIO EMAC_MDI_in Any GPIO EMAC_MDO_out Any GPIO EMAC_CRS_out Any GPIO EMAC_COL_out Any GPIO Note: Functions of Motor PWM, LED PWM, UART, I2C, I2S, general purpose SPI and Remote Controller can be configured to any GPIO. Espressif Systems 12 http://www.espressif.com

4.3 Digital Terminal Characteristics 4 ELECTRICAL CHARACTERISTICS 4. Electrical Characteristics Note: The specifications in this chapter are tested with general condition: VBAT = 3.3V, TA = 27°C, unless otherwise specified. 4.1 Absolute Maximum Ratings Table 7: Absolute Maximum Ratings Rating Condition Value Unit Storage temperatue - -40 ~ 85 °C Maximum soldering temperature - 260 °C Supply voltage IPC/JEDEC J-STD-020 +2.2 ~ +3.6 V 4.2 Recommended Operating Conditions Table 8: Recommended Operating Conditions Operating condition Symbol Min Typ Max Unit Operating temperature - -40 20 85 °C Supply voltage VDD 2.2 3.3 3.6 V 4.3 Digital Terminal Characteristics Table 9: Digital Terminal Characteristics Terminals Symbol Min Typ Max Unit Input logic level low VIL -0.3 - 0.25VDD V Input logic level high VIH 0.75VDD - VDD+0.3 V Output logic level low VOL N - 0.1VDD V Output logic level high VOH 0.8VDD - N V Espressif Systems 13 http://www.espressif.com

4.5 Bluetooth LE Radio 4 ELECTRICAL CHARACTERISTICS 4.4 Wi-Fi Radio Table 10: Wi-Fi Radio Characteristics Description Min Typical Max Unit General Characteristics Input frequency 2412 - 2484 MHz Input impedance - 50 - Ω Input reflection - - -10 dB Output power of PA 15.5 16.5 21.5 dBm Sensitivity DSSS, 1 Mbps - -98 - dBm CCK, 11 Mbps - -90 - dBm OFDM, 6 Mbps - -93 - dBm OFDM, 54 Mbps - -75 - dBm HT20, MCS0 - -93 - dBm HT20, MCS7 - -73 - dBm HT40, MCS0 - -90 - dBm HT40, MCS7 - -70 - dBm MCS32 - -91 - dBm Adjacent Channel Rejection OFDM, 6 Mbps - 37 - dB OFDM, 54 Mbps - 21 - dB HT20, MCS0 - 37 - dB HT20, MCS7 - 20 - dB 4.5 Bluetooth LE Radio 4.5.1 Receiver Table 11: Receiver Characteristics - BLE Parameter Conditions Min Typ Max Unit Sensitivity @0.1% BER - - -98 - dBm Maximum received signal @0.1% BER - 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 Adjacent channel selectivity C/I 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 Out-of-band blocking performance 2500 MHz - 3000 MHz -27 - - dBm 3000 MHz - 12.5 GHz -10 - - dBm Intermodulation - -36 - - dBm Espressif Systems 14 http://www.espressif.com

4.6 Reflow Profile 4 ELECTRICAL CHARACTERISTICS 4.5.2 Transmit Table 12: Transmit Characteristics - BLE Parameter Conditions Min Typ Max Unit RF transmit power - - +7.5 +10 dBm RF power control range - - 25 - dB F = F0 + 1 MHz - -14.6 - dBm F = F0 - 1 MHz - -12.7 - dBm F = F0 + 2 MHz - -44.3 - dBm F = F0 - 2 MHz - -38.7 - dBm Adjacent channel transmit power F = F0 + 3 MHz - -49.2 - dBm F = F0 - 3 MHz - -44.7 - dBm F = F0 + > 3 MHz - -50 - dBm F = F0 - > 3 MHz - -50 - dBm ∆ f1avg - - - 265 kHz ∆ f2max - 247 - - kHz ∆ f2avg /∆ f1avg - - -0.92 - - ICFT - - -10 - kHz Drift rate - - 0.7 - kHz/50 µs Drift - - 2 - kHz 4.6 Reflow Profile Table 13: Reflow Profile Item Value Ts max to TL (Ramp-up Rate) 3°C/second max Preheat Temperature Min. (Ts Min.) 150°C Temperature Typ. (Ts Typ.) 175°C Temperature Min. (Ts Max.) 200°C Time (Ts ) 60 ~ 180 seconds Ramp-up rate (TL to TP ) 3°C/second max Time maintained above: –Temperature (TL )/Time (TL ) 217°C/60 ~ 150 seconds Peak temperature (TP ) 260°C max, for 10 seconds Target peak temperature (TP Target) 260°C +0/-5°C Time within 5°C of actual peak (tP ) 20 ~ 40 seconds TS max to TL (Ramp-down Rate) 6°C/second max Tune 25°C to Peak Temperature (t) 8 minutes max Note: The 32 kHz crystal is internally connected to ESP32’s GPIO32 and GPIO33. To use ADC, Touch or GPIO functions of IO32 and IO33, please remove the 32 kHz crystal and its capacitors — C13 and C17, and solder the 0ohm resistors — R5 and R6. Espressif Systems 15 http://www.espressif.com


Document Created: 2017-12-18 14:34:19
Document Modified: 2017-12-18 14:34:19
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