ESP-EYE User manual Version 0.1 Espressif Systems Copyright 2019 www.espressif.com About This Guide This document describes the specication of the ESP-EYE development board. Release Notes Date 2019.01 Version V0.1 Release notes For certication purpose. Documentation Change Notication Espressif provides email notications to keep customers updated on changes to technical documentation. Please subscribe at https://www.espressif.com/en/subscribe. Certication Download certicates for Espressif products from https://www.espressif.com/en/
certicates. 1. Overview ESP-EYE is an ESP32-based development board that integrates a digital microphone, 8 MB PSRAM and 4 MB ash, as well as provides an external 2-million-pixel camera, which makes the board very suitable for applications in the elds of face detection, face recognition, and speech recognition. Besides, the board can also support image transmission over Wi-Fi and debugging using the Micro USB port, which enables the users'
development of advanced AI solutions. CONFIDENTIAL Espressif 2019.01
!
2. Circuit Components Figure 3-1. ESP-EYE Circuit components The list and gure below describe the key components, interfaces, and controls of the ESP-
EYE development board:
3D_PIFA Antenna A 3D PIFA antenna is used for this module, The antenna gain is 2.98dBi. ESP32 Chip A 2.4 GHz Wi-Fi and Bluetooth combo chip Crystal Oscillator Provides an external clock for ESP32. Espressif 2019.01
!
!
USB Port A function key LED Indicators Flash & PSRAM Top Tactile Button Side Tactile Button LDO Power Supply CP2102 USB-to-UART Chip Provides memory to store applications. Converts the USB signals to UART signals. Provides the power supply to the whole system. Provides the required power supplies to the ESP32 chip, camera and LED indicators. Reset/Boot button. We recommend that you do not congure this button for other uses. CONFIDENTIAL The board has a red indicator and a white indicator. Different combinations of red and white indicators reect the different status of the board, such as waking up, networking, face detection, face recognition, face enrollment, and face recognition... An external 2-million-pixel camera module for face detection, face recognition and Face ID enrollment A reserved port for data transmission A digital microphone for voice control functions Used to connect the external camera. Camera Connector SPI Port Camera MIC Espressif 2019.01
!
3. 3.1. 3.1 Limit Parameters Table 1. ESP-EYE Limit Parameters Parameter Symbol Power supply voltage Power supply current Low-level input voltage High-level input voltage VDD IVDD VIL VIH Input leak current IIL Pin capacitance CPAD Low-level output voltage High-level output voltage Maximum IO output current Storage temperature Operating temperature VOL VOH IMAX TSTR TOPR Min 4.75 0.5
-0.3 0.75xVIO
-
-
-
0.8xVIO
-
-40 0 Typ 5.0
-
-
-
-
-
-
-
-
-
-
Max 5.25
-
0.25xVIO VIO+0.3 50 2 0.1xVIO
-
40 85 50 3.2. RF Performance Description Frequency range Table 2. ESP-EYE RF Performance Min Typ Max 2412
-
TX power 2462 Unit V A V V nA pF V V mA Unit MHz RF output power 802.11b:25.83dBm,802.11g:24.78dBm,802.11n20:24.86dBm, 802.11n40:23.84dBm Sensitivity Espressif 2019.01
!
Description DSSS, 1 Mbps CCK, 11 Mbps 6 Mbps (1/2 BPSK) 54 Mbps (3/4 64-QAM) HT20, MCS0 HT20, MCS7 HT40, MCS0 HT40, MCS7 OFDM, 6 Mbps OFDM, 54 Mbps HT20, MCS0 HT20, MCS7 Description Frequency range RF output power Min
-
-
-
-
-
-
-
-
-
-
-
-
Typ
-97
-87
-92
-74
-91
-71
-89
-69 Adjacent channel rejection 31 14 31 13 Max
-
-
-
-
-
-
-
-
-
-
-
-
Table 3. ESP-EYE BT Performance Min Typ Max 2402
-
TX power 2480 BLE:2.17dBm,BT:5.82dBm Unit dBM dBM dBM dBM dBM dBM dBM dBM dB dB dB dB Unit MHz Parameter Sensitivity @30.8% PER Maximum received signal @30.8% PER Co-channel C/I Adjacent channel selectivity C/I Receiver Characteristics Conditions
-
-
-
F = F0 + 1 MHz F = F0 1 MHz F = F0 + 2 MHz F = F0 2 MHz F = F0 + 3 MHz F = F0 3 MHz 30 MHz ~ 2000 MHz 2000 MHz ~ 2400 MHz 2500 MHz ~ 3000 MHz 3000 MHz ~ 12.5 GHz
-
Min
-
0
-
-
-
-
-
-
-
10 27 27 10 36 Typ 97
-
+10 5 5 25 35 25 45
-
-
-
-
-
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit dBm dBm dB dB dB dB dB dB dB dBm dBm dBm dBm dBm 2019.01 Out-of-band blocking performance Intermodulation Espressif
!
Transmitter Characteristics Parameter Adjacent channel transmit power f1avg f2max f2avg/ f1avg ICFT Drift rate Drift Conditions F = F0 2 MHz F = F0 3 MHz F = F0 > 3 MHz
-
-
-
-
-
-
Min
-
-
-
-
247
-
-
-
-
Typ 52 58 60
-
-
0.92 10 0.7 2 Max
-
-
-
265
-
-
-
-
-
Unit dBm dBm dBm kHz kHz
-
kHz kHz/50 s kHz 4. Dimensions CONFIDENTIAL Espressif 2019.01
!
!
FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the users 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
(1)
(2) This device must accept any interference received, including interference that may cause undesired operation. FCC 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& your body. FCC Label Instructions:
The outside of final products that contains this module device must display a label referring to the enclosed module. This exterior label can use wording such as: Contains Transmitter Module FCC ID: 2AC7Z-ESPEYE,or Contains FCC ID:2AC7Z-ESPEYE, Any similar wording that expresses the same meaning may be used. 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 MERCHANTABILITY, 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 document 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. Espressif IoT Team www.espressif.com