ESPRESSIF SYSTEMS ESP32S2WROVER User Manual
ESP32-S2-WROVER
User Manual
Prelease version 0.1
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Copyright © 2019
About This Document
This document provides the specifications for the ESP32-S2-WROVER module.
Revision History
For revision history of this document, please refer to the last page.
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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 © 2019 Espressif Inc. All rights reserved.
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1. Module Overview
1. Module Overview
1.1 Features
MCU
• ESP32-S2 embedded, Xtensa®single-core 32-bit
LX7 microprocessor, up to 240 MHz
• 128 KB ROM
• 320 KB SRAM
• 16 KB SRAM in RTC
Wi-Fi
• 802.11 b/g/n
• Bit rate: 802.11n up to 150 Mbps
• A-MPDU and A-MSDU aggregation
• 0.4 µs guard interval support
Hardware
• Interfaces: GPIO, SPI, LCD, UART, I2C, I2S, Cam-
era interface, IR, pulse counter, LED PWM, USB
OTG 1.1, ADC, DAC, touch sensor, temperature
sensor
• 40 MHz crystal oscillator
• 4 MB SPI flash
• 2 MB PSRAM
• Operating voltage/Power supply: 3.0 ~ 3.6 V
•
Operating temperature range: –40 ~ 85 °C
• Dimensions: (18 × 31 × 3.3) mm
Certification
• Green certification: RoHS/REACH
Test
•
Operating frequency range: 2412 ~ 2462 MHz
• HTOL/HTSL/uHAST/TCT/ESD
1.2 Description
ESP32-S2-WROVER is a powerful, generic Wi-Fi MCU module that has a rich set of peripherals. This module is
an ideal choice for a wide variety of application scenarios relating to Internet of Things (IoT), wearable electronics
and smart home.
This module is provided in two versions: one with a PCB antenna, the other with an Dipole antenna.
ESP32-S2-WROVER features a 4 MB external SPI flash and an additional 2 MB SPI Pseudo static RAM (PSRAM).
The information in this datasheet is applicable to both modules.
The ordering information on the two variants of ESP32-S2-WROVER is listed as follows:
Table 1: ESP32-S2-WROVER Ordering Information
Module Chip embedded Flash PSRAM Module dimensions (mm)
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ESP32-S2-WROVER (PCB)
ESP32-S2-WROVER-I (Dipole)
Notes:
The module with various capacities of flash or flash is available for custom order.
ESP32-S2 4 MB 2 MB (18.00±0.10)×(31.00±0.10)×(3.30±0.10)
At the core of this module is ESP32-S2 *, an Xtensa® 32-bit LX7 CPU that operates at up to 240 MHz. The user
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1. Module Overview
can power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for
changes or crossing of thresholds. ESP32-S2 integrates a rich set of peripherals, ranging from SPI, I²S, UART, I²C,
LED PWM, ADC, DAC, touch sensor, temperature sensor, as well as up to 43 GPIOs. It also includes a full-speed
USB On-The-Go (OTG) interface to enable USB communication.
Note:
* For more information on ESP32-S2, please refer to ESP32-S2 Datasheet.
1.3 Applications
• 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 Machines
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LIST OF TABLES
List of Tables
1 ESP32-S2-WROVER Ordering Information 3
2 Pin Definitions 10
3 Strapping Pins 11
4 Absolute Maximum Ratings 13
5 Recommended Operating Conditions 13
6 DC Characteristics (3.3 V, 25 °C) 13
7 Current Consumption Depending on RF Modes 14
8 Current Consumption Depending on Work Modes 14
9 Wi-Fi RF Standards 15
10 Transmitter Characteristics 15
11 Receiver Characteristics 15
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LIST OF FIGURES
List of Figures
1 Block Diagram 8
2 Pin Layout of ESP32-S2-WROVER (Top View) 9
3 ESP32-S2-WROVER Schematics 17
4 ESP32-S2-WROVER Peripheral Schematics 18
5 ESP32-S2-WROVER Physical Dimensions 19
6 Recommended PCB Land Pattern 20
7 Reflow Profile 21
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3. Pin Definitions
PCB Antenna
GND
EN
IO46
IO45
RXD0
TXD0
IO42
IO41
IO40
IO39
IO38
IO37
IO36
IO35
IO34
IO33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
GND
3V3
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
IO10
IO11
IO12
IO13
43 GND
17
18
19
IO14
IO15
IO16
20
21
22
IO17
IO18
IO19
23
24
25
IO20
IO21
IO26
26 GND
3. Pin Definitions
3.1 Pin Layout
Note:
The pin diagram shows the approximate location of pins on the module. For the actual mechanical diagram, please refer
to Figure 7.1 Physical Dimensions.
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Figure 2: Pin Layout of ESP32-S2-WROVER (Top View)
3.2 Pin Description
ESP32-S2-WROVER has 42 pins. See pin definitions in Table 2.
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3. Pin Definitions
Table 2: Pin Definitions
Name No. Type Function
GND 1 P Ground
3V3 2 P Power supply
IO0 3 I/O/T RTC_GPIO0, GPIO0
IO1 4 I/O/T RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0
IO2 5 I/O/T RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1
IO3 6 I/O/T RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2
IO4 7 I/O/T RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3
IO5 8 I/O/T RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4
IO6 9 I/O/T RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5
IO7 10 I/O/T RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6
IO8 11 I/O/T RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7
IO9 12 I/O/T RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD
IO10 13 I/O/T RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4
IO11 14 I/O/T RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5
IO12 15 I/O/T RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6
IO13 16 I/O/T RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7
IO14 17 I/O/T RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS
IO15 18 I/O/T RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P
IO16 19 I/O/T RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N
IO17 20 I/O/T RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1
IO18 21 I/O/T RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3
IO19 22 I/O/T RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
IO20 23 I/O/T RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+
IO21 24 I/O/T RTC_GPIO21, GPIO21
IO26 25 I/O/T SPICS1, GPIO26
GND 26 P Ground
IO33 27 I/O/T SPIIO4, GPIO33, FSPIHD
IO34 28 I/O/T SPIIO5, GPIO34, FSPICS0
IO35 29 I/O/T SPIIO6, GPIO35, FSPID
IO36 30 I/O/T SPIIO7, GPIO36, FSPICLK
IO37 31 I/O/T SPIDQS, GPIO37, FSPIQ
IO38 32 I/O/T GPIO38, FSPIWP
IO39 33 I/O/T MTCK, GPIO39, CLK_OUT3
IO40 34 I/O/T MTDO, GPIO40, CLK_OUT2
IO41 35 I/O/T MTDI, GPIO41, CLK_OUT1
IO42 36 I/O/T MTMS, GPIO42
TXD0 37 I/O/T U0TXD, GPIO43, CLK_OUT1
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RXD0 38 I/O/T U0RXD, GPIO44, CLK_OUT2
IO45 39 I/O/T GPIO45
IO46 40 I GPIO46
High: on, enables the chip.
EN 41 I
Low: off, the chip powers off.
Note: Do not leave the EN pin floating.
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