User's Manual

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1. ESP-WROOM-02D Overview
1. ESP-WROOM-02D Overview
The ESP-WROOM-02D is a new ESP8266EX-based module developed by Espressif. It
differs from the ESP-WROOM-02 in that it is compatible both with 150-mil and 208-mil
flash (with 150-mil flash embedded by default). The ESP-WROOM-02D also features
optimized antenna and RF performance.
📖 Note:
For more information on ESP8266EX, please refer to ESP8266EX Datasheet.
Table 1-1. ESP-WROOM-02D Specifications
Categories
Items
Specifications
Wi-Fi
Wi-Fi protocols
802.11 b/g/n
Frequency range
2.4 GHz ~ 2.5 GHz (2400M ~ 2483.5M)
Hardware
Peripheral interface
UART/HSPI/I2C/I2S/IR Remote Control
GPIO/PWM
Operating voltage
2.7V ~ 3.6V
Operating current
Average: 80 mA
Minimum current delivered by
power supply
500 mA
Operating temperature range
-40°C ~ 85°C
Storage temperature
-40°C ~ 85°C
Package size
(18±0.2) mm x (20±0.2) mm x (3.2±0.15) mm
External interface
-
Software
Wi-Fi mode
Station/SoftAP/SoftAP+Station
Security
WPA/WPA2
Encryption
WEP/TKIP/AES
Firmware upgrade
UART Download/OTA (via network)/Download and write
firmware via host
Software development
Supports Cloud Server Development/SDK for custom
firmware development
Network protocols
IPv4, TCP/UDP/HTTP/FTP
User configuration
AT Instruction Set, Cloud Server, Android/iOS app
Espressif
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2017.11