ESP-WROOM-32UE Product 2.4GHz Wi-Fi and BLE4.2 Coexistence Module Version: 1.0 Date: July.20, 2022 Specification Features General Chip: ESP32-D0WD-V3 Module Size:18mm x 19.2mm x 3mm Dual-Core 240MHz MCU 4MByte embedded flash(default) 448KB ROM ADC;
LED PWM;
Working Temperature: -40-85 Applications Serial transparent transmission;
Wi-Fi prober;
520KB SRAM+16KB RTC SRAM Smart power plug/Smart LED light;
Wi-Fi Features IEEE 802.11 b/g/n-compliant Center frequency range of operating channel:
2412 ~ 2484 MHz 1T1R mode with data rate up to 150 Mbps TX/RX A-MPDU, TX/RX A-MSDU Immediate Block ACK Bluetooth Features Camera product;
Sensor networks;
Over-the-top (OTT) devices;
Wireless location system beacon;
Industrial field bus;
Module Type Name Flash Antenna Bluetooth LE: Bluetooth 4.2 ESP-WROOM-32UE-N4 32M bit U.FL Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps ESP-WROOM-32UE-N8 64M bit U.FL Advertising extensions Multiple advertisement sets Channel selection algorithm #2 ESP-WROOM-32UE-N16 128M bit U.FL Module Structure Peripheral Interfaces GPIO * 32;
IIC + IIS;
SDIO;
TWAI (CAN 2.0);
SPI;
EN ;
MCPWM;
Update Record Date 2022-07-20 Version V1.0 Update First released Table of Contents 1. Introduction ....................................................................................................................... 4 2. Interface Definition ........................................................................................................... 6 3. Size and Layout ................................................................................................................. 9 4. Electronica Characteristics .............................................................................................. 10 5. Power Consumption ........................................................................................................ 11 6. Wi-Fi RF Characteristics ................................................................................................. 11 7. Bluetooth LE Radio ......................................................................................................... 12 8. Recommended Sold Temperature Curve ........................................................................ 13 9. Minimum User System .................................................................................................... 13 10. Recommended Layout Design ...................................................................................... 14 11. Peripheral Design Suggestion ....................................................................................... 15 12. Product Handling ........................................................................................................... 15 13. U.F.L RF Connector ...................................................................................................... 16 14. Packing Instruction ........................................................................................................ 16 Appendix: Module Schematic ............................................................................................. 18 ESP-WROOM-32UE User Manual 1. Introduction ESP-WROOM-32UE Wi-Fi and BLE coexistence Module is a highly integrated single-chip low power 802.11bgn Wireless LAN (WLAN) network controller. It combines a dual-core 240MHz CPU, WLAN MAC, a 1T1R capable WLAN baseband, RF, and Bluetooth in a single chip. It also provides a bunch of configurable GPIO, which are configured as digital peripherals for different applications and control usage. ESP-WROOM-32UE module use ESP32-D0WD-V3 as Wi-Fi and BLE coexistence SOC chip. ESP-WROOM-32UE module integrates internal memories for complete Wi-Fi protocol functions. The embedded memory configuration also provides convenient application developments. ESP-WROOM-32UE module supports the standard IEEE802.11 b/g/n/e/i protocol and the complete TCP/IP protocol stack. User can use it to add the Wi-Fi function for the installed devices, and also can be viewed as an independent network controller. Fig.1.1 ESP-WROOM-32UE Module Structure Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 4 ESP-WROOM-32UE User Manual Technical parameters for ESP-WROOM-32UE are listed as follows. Table.1.1 ESP-WROOM-32UE Parameters Type Item Parameter Frequency 2.4G~2.5G (2412M~2484M) Transmit power 802.11g: +21 dBm 802.11b: +17 dBm Wi-Fi Receiver sensitivity EVM 802.11n: +20 dBm 802.11b: -98 dBm (11Mbps) 802.11g: -75 dBm54Mbps 802.11n: -73 dBmMCS7, HT20 802.11n: -70 dBmMCS7, HT40
-26dB @802.11b,11Mbps @20dBm
-28dB @802.11g,54Mbps @15dBm
-30dB @802.11n,HT20,MCS7 @13dBm
-30dB @802.11n,HT40,MCS7 @13dBm Antenna U.FL BLE RF power control range
-12~9dBm CPU Interface Xtensa dual-core 240MHz
/UART/SDIO/SPI/I2C/GPIO Hardware Working voltage 3.0V ~ 3.6V Working temperature
-40C ~ 85C Environment temperature
-40C ~ 105C Shape 18mm x 19.2mm x 3mm Wi-Fi working mode STA, Soft-AP and sniffer modes Security mode WPS / WEP / WPA / WPA2 / WPA3 Software Update firmware UART Download Software develop SDK Network protocol IPv4, TCP/UDP/HTTP/FTP/MQTT Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 5 ESP-WROOM-32UE User Manual 2. Interface Definition ESP-WROOM-32UE Wi-Fi & BLE module interface definition is shown as below Working modes and pins function is shown in Table 2.1. Fig.2.1 ESP-WROOM-32UE Pins Definition Table.2.1Working Mode Mode IO0 Voltage Level UART Download Mode LOW Flash Boot Mode HIGH (Default) Table.2.2 Pins Function Definition Num. Pin Name Type Function 1 2 3 4 GND P Ground 3V3 EN P Power supply I Chip enable; Internal Pull-up. HIGH: enable the chip SEN_VP I GPIO36, ADC1_CH0, RTC_GPIO0 Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 6 ESP-WROOM-32UE User Manual 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 SEN_VN I GPIO39, ADC1_CH3, RTC_GPIO3 IO34 IO35 IO32 IO33 I GPIO34, ADC1_CH6, RTC_GPIO4 I GPIO35, ADC1_CH7, RTC_GPIO5 I/O I/O 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 IO25 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0 IO26 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1 IO27 I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV IO14 IO12 I/O I/O 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 GND P Ground IO13 I/O GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER SD2 SD3 I/O GPIO9, SD_DATA2, SPIHD, HS1_DATA2, U1RXD I/O GPIO10, SD_DATA3, SPIWP, HS1_DATA3, U1TXD CMD I/O GPIO11, SD_CMD, SPICS0, HS1_CMD, U1RTS CLK I/O GPIO6, SD_CLK, SPICLK, HS1_CLK, U1CTS SD0 SD1 IO15 IO2 IO0 IO4 I/O GPIO7, SD_DATA0, SPIQ, HS1_DATA0, U2RTS I/O GPIO8, SD_DATA1, SPID, HS1_DATA1, U2CTS I/O I/O I/O I/O HSPICS0, ADC2_CH3, GPIO15, TOUCH3, MTDO, 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 IO16 I/O GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT IO17 I/O GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180 IO5 I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 7 ESP-WROOM-32UE User Manual 30 31 32 33 34 35 36 37 38 IO18 I/O GPIO18, VSPICLK, HS1_DATA7 IO19 I/O GPIO19, VSPIQ, U0CTS, EMAC_TXD0 NC
IO21 I/O GPIO21, VSPIHD, EMAC_TX_EN RXD0 I/O GPIO3, U0RXD, CLK_OUT2 TXD0 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2 IO22 I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1 IO23 I/O GPIO23, VSPID, HS1_STROBE GND P Ground Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 8 ESP-WROOM-32UE User Manual 3. Size and Layout Size for ESP-WROOM-32UE can be shown as follows. Fig.3.1 Shape for ESP-WROOM-32UE
(a) Vertical View Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 9 ESP-WROOM-32UE User Manual
(b) Side View Fig.3.2 Size for ESP-WROOM-32UE Fig. 3.3 PCB Layout for ESP-WROOM-32UE 4. Electronica Characteristics Table.4.1 Electronica Characteristics Parameters Store Temperature Sold Temperature Working Voltage I/O VIL VIH VOL VOH Condition
IPC/JEDEC J-STD-020
Min
-40
3.0
-0.3 0.75*VDD
0.8*VDD Electrostatic Quantity (Human model) Release TAMB=25
Classical Normal
3.3
Max 105 260 3.6 0.25*VDD VDD+0.3 0.1*VDD
Unit V V 2 KV Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 10 ESP-WROOM-32UE User Manual Electrostatic Release Quantity (Machine model) TAMB=25
0.5 KV 5. Power Consumption Table.5.1 Power Consumption Parameters RX 11b /g/n, HT20 RX 11n, HT40 TX 11b, 1Mbps @19dBm TX 11g, 54Mbps @16dBm TX 11n, HT20, MCS7, @13dBm TX 11n, HT40, MCS7, @13dBm Modem-sleep, CPU is powered on @240MHz Light-sleep Deep-sleep, RTC timer + RTC memory Power off, CHIP_PU is set to low level Min Classical Max Unit
68 0.8 10 1 95 97 240 190 180 180
0 mA mA mA mA mA mA mA mA uA uA The peak current consumption of ESP-WROOM-32UE exceed 500mA when the module start work (RF calibration work consumes maximum current). Therefore, the recommended power supply is no less than 500mA. Note:
1. Active Mode: CPU and RF are all turned on. 2. Modem-sleep Mode: CPU is turned on. RF and baseband are turned off, but the communication is still connected. 3. Light-sleep Mode: CPU is turned off. RTC/external interrupt/MAC can wake up the chip. The communication is still connected. 4. Deep-sleep Mode: Only RTC is turned on. 6. Wi-Fi RF Characteristics The data in the following table is gotten when voltage is 3.3V in the indoor temperature environment. Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 11 ESP-WROOM-32UE User Manual Parameters Input frequency 802.11b 802.11n,MCS7 Parameters 802.11b,1Mbps 802.11b,11Mbps 802.11g,6Mbps 802.11g,54Mbps 802.11n,HT20,MCS0 802.11n,HT20,MCS7 802.11n,HT40,MCS0 802.11n,HT40,MCS7 Table.6.1 Wi-Fi TX Characteristics Min Classical Max Unit 2412
2484 MHz
20.0 13
Table.6.2 Wi-Fi RX Sensitivity Min Classical Max
-98
-89
-92
-74
-91
-71
-89
-69
dBm dBm Unit dBm dBm dBm dBm dBm dBm dBm dBm Table.6.3 Wi-Fi RX Characteristics Parameters Min Classical Max Unit ADJ Channel Rejection @11g, 6Mbps ADJ Channel Rejection @11g, 54Mbps ADJ Channel Rejection @11n,HT20,MCS0 ADJ Channel Rejection @11n,HT20,MCS7
31 14 31 13
dB dB dB dB 7. Bluetooth LE Radio Table.7.1 TX Transmitter General Characteristics Parameters Min Classical Max Unit RF power control range
-12 3 ADJ channel Transmit Power @F-F02MHz ADJ channel Transmit Power @F-F03MHz ADJ channel Transmit Power @F-F0>3MHz
-52
-58
-60 9
dBm dBm dBm kHz Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 12 ESP-WROOM-32UE User Manual f1avg f2max ICFT
247
-10 265 kHz
kHz kHz Table.7.2 RX Transmitter General Characteristics Parameters Sensitivity @30.8% PER B L E Maximum received signal @30.8% PER Co-channel C/I Min Classical Max Unit
0
-96.5
10
dBm dBm dB 8. Recommended Sold Temperature Curve
(1) Reflow Times <= 2 times (Max.)
(2) Max Rising Slope: 3/sec
(3) Max Falling Slope: -3/sec
(4) Over 217 Time: 60~120sec
(5) Peak Temp:240~250 Fig.8.1 Recommended Reflow Profile 9. Minimum User System This module can work just at 3.3V voltage condition:
Note:
(1) The working voltage for module is DC 3.3V;
Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 13 ESP-WROOM-32UE User Manual
(2) The max current from IO of this module is 40mA;
(3) Wi-Fi module is at download mode: IO0 is LOW level, then module reset to power;
(4) Wi-Fi module is connected to RXD of the other MCU, and TXD is connected to RXD of the other MCU. 10. Recommended Layout Design ESP-WROOM-32UE module can be sold on PCB board directly. For the high RF performance for the device, please notice the placement of the module. There are three ways to use the module for Wi-Fi Module with PCB antenna. Solution 1: optical solution. The Wi-Fi module is placed on the side of the board, and the antennas are all exposed, and there is no metal material around the antenna, including wires, metal casings, weight plates, and the like. Solution 2: sub-optical solution. The Wi-Fi module is placed on the side of the board, and the antenna below is hollowed out. There is a gap of not less than 5 mm reserved with the PCB, and there is no metal material around the antenna, including wires, metal casings, weight plates, and the like. Solution 3: The Wi-Fi module is placed on the side of the board, and the PCB area under the antenna is empty, and copper cannot be laid. Fig.10.1 Solution 1 Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 14 ESP-WROOM-32UE User Manual Fig.10.2 Solution 2 11. Peripheral Design Suggestion Fig.10.3 Solution 3 Wi-Fi module is already integrated into high-speed GPIO and Peripheral interface, which may be generated the switch noise. If there is a high request for the power consumption and EMI characteristics, it is suggested to connect a serial 10~100 ohm resistance, which can suppress overshoot when switching power supply, and can smooth signal. At the same time, it also can prevent electrostatic discharge (ESD). 12. Product Handling 12.1 Storage Conditions The products sealed in moisture barrier bags (MBB) should be stored in a non-condensing atmospheric environment of < 40 C and 90%RH. The module is rated at the moisture sensitivity level (MSL) of 3. After unpacking, the module must be soldered within 168 hours with the factory conditions 255 C and 60%RH. If the above conditions are not met, the module needs to be baked. 12.2 Electrostatic Discharge (ESD) Human body model (HBM): 2000 V Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 15 ESP-WROOM-32UE User Manual Charged-device model (CDM): 500 V 13. U.F.L RF Connector ESPC2-F1-E module use U.F.L type RF connector for external antenna connection. (IPEX V1.0). Fig.13.1 U.F.L RF Connector 14. Packing Instruction The product is packed in a tray, as shown in the following figure. The size of the single box is: 340 x 360 x 60mm, and 650 pieces module is in the box. And the outer box size is 355 x 375 x 325mm, including 5 single box which include 3250 pieces module. Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 16 ESP-WROOM-32UE User Manual Fig.14.1 Module Package Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 17 ESP-WROOM-32UE User Manual Appendix: Module Schematic Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 18 FCC Statement 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursua nt to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful inte rference in a residential installation. This equipment generates uses and can radiate radio frequency energy a nd, if not installed and used in accordance with the instructions, may cause harmful interference to radio com munications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turn ing the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help important announcement Important Note:
Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Country Code selection feature to be disabled for products marketed to the US/Canada. This device is intended only for OEM integrators under the following conditions:
1. The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2. The transmitter module may not be co-located with any other transmitter or antenna, 3. For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for 2.4G band by supplied firmware programming tool. OEM shall not supply any tool or info to the end-user regarding to Regulatory Domain change. (if modular only test Channel 1-11) As long as the three conditions above are met, further transmitter testing will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. Important Note:
In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End Product Labeling The final end product must be labeled in a visible area with the following"
Contains FCC ID: 2BB77-WROOM-32X "
Manual Information to the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01r01 2.2 List of applicable FCC rules CFR 47 FCC PART 15 SUBPART C has been investigated. It is applicable to the modular transmitter 2.3 Specific operational use conditions This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer for the installation method in end system. 2.4 Limited module procedures Not applicable 2.5 Trace antenna designs Not applicable 2.6 RF exposure considerations This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. 2.7 Antennas This radio transmitter FCC ID:2BB77-WROOM-32X has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. Antenna No. BT/2.4GWIFI Model No. of antenna:
Type of antenna:
PCB Antenna Gain of the antenna
(Max.) 3.57dBi for 2400-2500MHz;
Frequency range:
2.8 Label and compliance information The final end product must be labeled in a visible area with the following" Contains FCC ID:2BB77-WROOM-32X". 2.9 Information on test modes and additional testing requirements Host manufacturer is strongly recommended to confirm compliance with FCC requirements for the transmitter when the module is installed in the host. 2.10 Additional testing, Part 15 Subpart B disclaimer Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B. 2.11 Note EMI Considerations Host manufacture is recommended to use D04 Module Integration Guide recommending as "best practice" RF design engineering testing and evaluation in case non-linear interactions generate additional non-compliant limits due to module placement to host components or properties. 2.12 How to make changes This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer for the installation method in end system. According to the KDB 996369 D02 Q&A Q12, that a host manufacture only needs to do an evaluation (i.e., no C2PC required when no emission exceeds the limit of any individual device (including unintentional radiators) as a composite. The host manufacturer must fix any failure.