PSF-B85

Overview

PSF-B85 is an ultra low-power Wi-Fi module designed by ITEAD. The module adopts the highly integrated Wi-Fi chip ESP8285. It features industry's highly competitive compact packaging size and ultra-low power technology. Specially designed for mobile devices and the Internet of Things application, it connects physical devices to Wi-Fi wireless network to make Internet or LAN communications. PSF-B85 has completed self-contained wireless network, with built-in 32-bit kernel processor, on-chip SRAM, it can be used as the main control chip, but also as a WiFi adapter. Simply apply it to other microcontroller-based designs by SPI/SDIO or I2C/UART interface communication.

PSF-B85 supports multiple packaging form. Supports antenna of IPEX connector and stamp hole interface.

PSF-B85 is widely applied to smart power grid, smart transportation, smart home, handheld devices, industrial control, etc.

Tutorial: Using ESP8266/ESP8285 to blink an LED

Go shopping PSF-B85 WiFi Wireless Module Coming soon!

Features

• 802.11 b/g/n/d/e/i/k/r

• Support STA/AP/STA+AP mode

• WPA/WPA2 PSK and WP

• Built-in TCP/IP protocol stack, support multi-way TCP Client connection

• Support rich Socket AT commands

• Support UART/GPIO data communication interface

• Built-in 32 bit MCU, also work as application processor

• 3.3V single supply

• Wi-Fi Direct (P2P) support

• Support MIMO 1×1 and 2×1, STBC, A- MPDU and A-MSDU aggregation and 0.4μs guard interval

• WMM power save U-APSD

• Multiple queue management to fully utilize traffic prioritization defined by 802.11e standard.

• Adaptive rate fallback algorithm sets the optimum transmission rate and Tx power based on actual SNR and packet loss information.

Functions

Main functions

The main function of PSF-B85 includes serial transparent transmission, PWM control, GPIO control.

Serial transparent transmission good transmission performance, the maximum transmission rate is 460800bps.

PWM control adjust lighting, adjust led color, adjust motor speed and much more.

GPIO control control switch, relay and more.

Operating Mode

PSF-B85 supports three operating mode:STA/AP/STA+AP.

STA mode: the module connects to Internet via a router, thus mobile phone or computer can remote control devices via Internet.

AP mode: PSF-B85 module worked as a hotspot, which realizes directly communication between the module and phone/ computer, enables wireless LAN control.

STA+AP mode: this is coexistence mode, which can realize seamlessly switch via the Internet control, easy operation.

Applications

Serial to Wi-Fi;

Industrial transparent transmission DTU;

Wi-Fi remote monitoring/control;

Intelligent Toy;

Color LED control;

Firefighting and security integrated intelligence management;

Intelligent card terminals, wireless POS machines, Wi-Fi cameras, hand-held devices, etc.

Main Technical Specifications

Module	Type	PSF-B85
	Chip	ESP8285
Wi-Fi	Wireless Standard	IEEE 802.11b/g/n/d/e/i/k/r
	Frequency Range	2.412GHz-2.484GHz
	Tx Power	802.11b: +20 +/-2dBm (@11Mbps)
		802.11g: +17 +/-2dBm (@54Mbps)
		802.11n: +14 +/-2dBm (@HT20, MCS7)
	Rx Sensitivity	802.11b: -91 dBm (@11Mbps ,CCK)
		802.11g: -75 dBm (@54Mbps, OFDM)
		802.11n: -72 dBm (MCS7)
	Connector	External：stamp hole interface
		External：I-PEX connector
Hardware	Peripheral Interface	UART，IIC，PWM，GPIO，ADC
	Operating Voltage	3.3V
	GPIO Drive capability	Max：12mA
	Operating Current	Continue sending=>Average value：~70mA, Peak value: 200mA Normal mode=> Average value: ~12mA, Peak value: 200mA Standby：<200uA
	Operating Temperature Range	-40℃~125℃
	Storage Temperature Range	Temp.：<40℃, Relative humidity：<90%R.H.
	Size	13.5mm*13.7mm*1mm；
Serial transparent transmission	Transmission rate	110-921600bps
	TCP Client	5
Software	Wireless network types	STA/AP/STA+AP
	Security	WEP/WPA-PSK/WPA2-PSK
	Encryption	WEP64/WEP128/TKIP/AES
	Firmware Upgrade	UART Download / OTA (via network)
	Network Protocols	IPv4, TCP/UDP/FTP/HTTP