ESP32-WROOM-32E-N4

Part: ESP32WROOM32E ESP32WROOM32UE from Espressif

Type: Wi-Fi + Bluetooth + Bluetooth LE MCU module

Key Specs:

• CPU Clock Frequency: up to 240 MHz
• Flash Memory: 4/8/16 MB SPI flash
• SRAM: 520 KB
• ROM: 448 KB
• Operating Voltage: 3.0 ~ 3.6 V
• WiFi Bit Rate (802.11n): up to 150 Mbps
• Operating Ambient Temperature: –40 ~ 85 °C, or –40 ~ 105 °C (for 4/8 MB flash versions)

Features:

• Built around ESP32 series of SoCs (ESP32-D0WD-V3 or ESP32-D0WDR2-V3)
• Xtensa dual-core 32-bit LX6 microprocessor
• 16 KB SRAM in RTC
• 2 MB PSRAM available with ESP32-D0WDR2-V3
• 2.4 GHz WiFi (802.11b/g/n)
• A-MPDU and A-MSDU aggregation
• 0.4 µs guard interval support
• Bluetooth V4.2 BR/EDR and Bluetooth LE specification
• Class-1, class-2 and class-3 transmitter
• AFH, CVSD and SBC support
• Rich set of peripherals: SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI® (compatible with ISO 11898-1, i.e. CAN Specification 2.0)
• 40 MHz crystal oscillator
• Antenna options: On-board PCB antenna (ESP32-WROOM-32E) or external antenna via a connector (ESP32-WROOM-32UE)
• Bluetooth certification: BQB
• Green certification: REACH/RoHS
• Supports FreeRTOS with LwIP, TLS 1.2 with hardware acceleration
• Secure (encrypted) over the air (OTA) upgrade

Applications:

• Generic Low-power IoT Sensor Hub
• Generic Low-power IoT Data Loggers
• Cameras for Video Streaming
• Over-the-top (OTT) Devices
• Speech Recognition
• Image Recognition
• Mesh Network
• Home Automation
• Smart Building
• Industrial Automation
• Smart Agriculture
• Audio Applications
• Health Care Applications
• Wi-Fi-enabled Toys
• Wearable Electronics
• Retail & Catering

CPU and OnChip Memory

• ESP32-D0WD-V3 or ESP32-D0WDR2-V3 embedded, Xtensa dual-core 32-bit LX6 microprocessor, up to 240 MHz
• 448 KB ROM
• 520 KB SRAM
• 16 KB SRAM in RTC
• ESP32-D0WDR2-V3 also provides 2 MB PSRAM

WiFi

• 802.11b/g/n
• Bit rate: 802.11n up to 150 Mbps
• A-MPDU and A-MSDU aggregation
• 0.4 µs guard interval support
• Center frequency range of operating channel: 2412 ~ 2484 MHz

Bluetooth

• Bluetooth V4.2 BR/EDR and Bluetooth LE specification
• Class-1, class-2 and class-3 transmitter
• AFH
• CVSD and SBC

Peripherals

• SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI® (compatible with ISO 11898-1, i.e. CAN Specification 2.0)

Integrated Components on Module

• 40 MHz crystal oscillator
• 4/8/16 MB SPI flash

Antenna Options

• ESP32-WROOM-32E: On-board PCB antenna
• ESP32-WROOM-32UE: external antenna via a connector

Operating Conditions

• Operating voltage/Power supply: 3.0 ~ 3.6 V
• Operating ambient temperature:
  • 85 °C version: –40 ~ 85 °C
  • 105 °C version: –40 ~ 105 °C. Note that only the modules embedded with a 4/8 MB flash support this version.

Certification

• Bluetooth certification: BQB
• RF certification: See certificates for ESP32-WROOM-32E and ESP32-WROOM-32UE
• Green certification: REACH/RoHS

Reliability Test

• HTOL/HTSL/uHAST/TCT/ESD

• Generic Low-power IoT Sensor Hub

• Generic Low-power IoT Data Loggers

• Cameras for Video Streaming

• Over-the-top (OTT) Devices

• Speech Recognition

• Image Recognition

• Mesh Network

• Home Automation

• Smart Building

• Industrial Automation

• Smart Agriculture

• Audio Applications

• Health Care Applications

• Wi-Fi-enabled Toys

• Wearable Electronics

• Retail & Catering Applications

The module has 38 pins. See pin definitions in Table 3.

For peripheral pin configurations, please refer to ESP32 Series Datasheet.

Table 3: Pin Definitions

Name No. Type¹ Function 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

Table 3 – cont'd from previous page

4.1 Absolute Maximum Ratings

Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Table 6: Absolute Maximum Ratings

^* Please see Appendix IO MUX of ESP32 Series Datasheet for IO's power domain.

4.2 Recommended Operating Conditions

Table 7: Recommended Operating Conditions

Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Table 6: Absolute Maximum Ratings

^* Please see Appendix IO MUX of ESP32 Series Datasheet for IO's power domain.

Table 7: Recommended Operating Conditions