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Summary of Contents for Espressif Systems ESP32-WROOM-32E
- Page 1 ESP32-WROOM-32E User Manual Version 0.1 Espressif Systems Copyright © 2019 www.espressif.com...
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Page 2: About This Document
About This Document This document provides the specifications for the ESP32-WROOM-32E modules with PCB antenna. 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. - Page 3 Notes: 1. ESP32-WROOM-32E (PCB) with 8 MB flash or 16 MB flash is available for custom order. 2. For detailed ordering information, please see Espressif Product Ordering Information. 3. For dimensions of the IPEX connector, please see Chapter 10.
- Page 4 1. Overview Table 2: ESP32-WROOM-32E Specifications Items Categories Specifications Test Reliablity HTOL/HTSL/uHAST/TCT/ESD 802.11 b/g/n20/n40 Protocols A-MPDU and A-MSDU aggregation and 0.4 s guard in- Wi-Fi terval support 2.412 GHz 2.462GHz Frequency range Protocols Bluetooth v4.2 BR/EDR and BLE specification NZIF receiver with –97 dBm sensitivity...
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Page 5: Pin Definitions
2. Pin Definitions 2. Pin Definitions 2.1 Pin Layout Figure 1: Pin Layout of ESP32-WROOM-32E (Top View) Espressif Systems ESP32-WROOM-32E Datasheet... -
Page 6: Pin Description
2. Pin Definitions 2.2 Pin Description ESP32-WROOM-32E has 38 pins. See pin definitions in Table 3. Table 3: Pin Definitions Name Type Function Ground Power supply Module-enable signal. Active high. SENSOR_VP 4 GPIO36, ADC1_CH0, RTC_GPIO0 SENSOR_VN 5 GPIO39, ADC1_CH3, RTC_GPIO3... - Page 7 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) Default 3.3 V 1.8 V MTDI Pull-down ESP32-WROOM-32E UserManual Espressif Systems...
- Page 8 ”Timing of SDIO Slave” after booting. • Internal pull-up resistor (R9) for MTDI is not populated in the module, as the flash and SRAM in ESP32- WROOM-32E only support a power voltage of 3.3 V (output by VDD_SDIO) ESP32-WROOM-32E User Manual Espressif Systems...
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Page 9: Functional Description
3. Functional Description 3. Functional Description This chapter describes the modules and functions integrated in ESP32-WROOM-32E. 3.1 CPU and Internal Memory ® ESP32-D0WD-V3 contains two low-power Xtensa 32-bit LX6 microprocessors. The internal memory includes: • 448 KB of ROM for booting and core functions. - Page 10 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 User Manual. ESP32-WROOM-32E User Manual Espressif Systems V0.1...
- Page 11 External connections can be made to any GPIO except for GPIOs in the range 6-11, 16, or 17. GPIOs 6-11 are connected to the module’s integrated SPI flash. For details, please see Section 6 Schematics. ESP32-WROOM-32E User Manual Espressif Systems...
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Page 12: Electrical Characteristics
Low-level output voltage 1; 2 VDD3P3_CPU power domain High-level source current 1; 2 (VDD = 3.3 V, V >= 2.64 V, VDD3P3_RTC power domain output drive strength set to the 1; 3 VDD_SDIO power domain maximum) ESP32-WROOM-32E User Manual Espressif Systems... - Page 13 11n, HT20, MCS7 1. Device should operate in the frequency range allocated by regional regulatory authorities. Target operating frequency range is configurable by software. 2. Target TX power is configurable based on device or certification requirements. ESP32-WROOM-32E User Manual Espressif Systems...
- Page 14 Adjacent channel transmit power F = F0 ± 3 MHz –58 F = F0 ± > 3 MHz –60 ∆ f1 ∆ f2 ∆ f2 /∆ f1 –0.92 ICFT –10 Drift rate kHz/50 s Drift ESP32-WROOM-32E User Manual Espressif Systems...
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Page 15: Reflow Profile
7LPH60 ~ 90s; Peak Temp.: 235 ~ 250 (<245 recommended) Time: 30 ~ 70s Cooling zone — Peak Temp. ~ 180 Ramp-down rate: -1 ~ -5 /s Solder — Sn&Ag&Cu Lead-free solder (SAC305) Figure 2: Reflow Profile ESP32-WROOM-32E UserManual Espressif Systems... -
Page 16: Antenna Specifications
6. Antenna Specifications 6 Antenna Specifications 6.1. 1 PCB Antenna Model: ESP ANT B Assembly: PTH Gain: 3.40 ESP32-WROOM-32E UserManual Espressif Systems... - Page 17 6. Antenna Specifications Dimensions: Pattern Plots: ONFID ESP32-WROOM-32E UserManual Espressif Systems...
- Page 18 6. Antenna Specifications ONFID Espressif Systems ESP32-WROOM-32E UserManual...
- Page 19 6. Antenna Specifications Revision History be required as specified by 2.1093. Date Version Release notes Preliminary release for certification CE& FCC 2020.02 V0.1 OEM Guidance 1. Applicable FCC rules This module is granted by Single Modular Approval. It complies to the requirements of FCC part 15C, section 15.247 rules.
- Page 20 6. Antenna Antenna type: PCB antenna; Peak gain: 3.40dBi 7. Label and compliance information An exterior label on OEM’s end product can use wording such as the following: “Contains Transmitter Module FCC ID: 2AC7Z-ESP32WROOM32E” or “Contains FCC ID: 2AC7Z-ESP32WROOM32E.” 8. Information on test modes and additional testing requirements a)The modular transmitter has been fully tested by the module grantee on the required number of channels,modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings.
- Page 21 9. Additional testing, Part 15 Sub part B disclaimer The final host / module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device. The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance...
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