Ogemray Technology KM26 User Manual
All rights reserved by Shenzhen Ogemray Technology Co., Ltd.
GWF-KM26
Product Specification
(2.4GHz/72.2Mbps 802.11 b/g/n)
ITEM：GWF-KM26
VERSION：V1.0
DATE：2016-11-15
The content can’t be modified without permission in this document
Historical Releases
Version
Modified Content
Writer
Auditing
date
Department
V1.0
the first version
Jasmine
Ning Qing
2016-11-15
Product dept.
Catalogue
1. Product Introduction
1.1 Overview
1.2 Features
1.3 Product Diagram
1.4 Appearance
1.5 Specification
1.6 Interface Definition
1.7 Electrical Features
1.8 Digital Port Features
2. Hardware Design Notice
2.1 Application Diagram
2.2 GPIO
2.3 UART
2.4 Design requirement of practical application
2.4.1 Reset Sequence
2.5 Power Supply Interface
2.6 RF Input and Output Interface
2.7 Dimension
2.8 No wiring area
3. Approval and Certification
4. Disclaimer
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Figure Catalogue
Figure 1- 1 GWF-KM26
Figure 1- 2 ESP8266EX Functional block diagram
Figure 1- 3 GWF-KM26 Front View
Figure 1- 4 Dimension
Figure 1- 5 Pin
Figure 2- 1 Application Diagram
Figure 2- 2 GPIO reference design
Figure 2- 3 LED reference design
Figure 2- 4 UART reference design
Figure 2- 5 KM26 external reset sequence
Figure 2- 7 On-board antenna
Figure 2- 8 Antenna pattern
Figure 2- 9 Dimens
Figure 2- 10 No wiring area
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Table Catalogue
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Table 1- 1 GWF-KM26 Specification
Table 1- 2 GWF-KM26 Pin Definition
Table 1- 3 Pin Mode
Table 1- 4 Pin Instruction
Table 1- 5 Electrical features
Table 1- 6 Data port features
Table 2- 1 UART pin definition
Table 2- 2 Power supply pin definition
Table 3- 1 Approval and Certification
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1. Product Introduction
1.1 Overview
GWF-KM26 adopted ESP8266EX platform, the chip work at 2.4G frequency. ESP8266EX is
among the most integrated Wi-Fi chips in the industry. Measuring just 5mm*5mm, ESP8266EX
requires minimal external circuitry and integrates a 32-bit Tensilica MCU, which features extra low
power consumption and 16-bit RISC, the main frequency support 80MHz and 160MHz. With RTOS,
it integrate WiFi MAC/BB/RF/PA/LNA/on-board antenna.
GWF-KM26 support IEEE802.11 b/g/n standard. Using TCP/IP complete protocol stack, user
can use the module to add WiFi network function, it will also establish independent network
controller.
ESP8266EX is a high-efficiency SOC, it offer the unprecedented practicality by low cost, which
offer unlimited possibilities for WiFi technology applied to other control system.
ESP8266EX is a complete and self-contained WiFi solutions, it can not only run independently,
but also work when carried on other host MCU. If ESP8266EX is loaded application as the only
application processor, it will be set up from external flash. Built-in with high speed buffer memory,
it is conductive to enhance system performance and reduce RAM demand.
In other case, ESP8266EX take charge of accessing to WiFi adapter, we can add it to any MCU
design, it is easy and convenient. Just need to thorough SPI/SDIO interface or I2C/UART interface.
Great capacity for management and memory function make it integrate sensors or other
application by GPIO, which occupy the least system resource.
With highly integrated on-chip features and minimal external discrete component count, the
chip offers reliability, compactness and robustness critical in end products.
1.2 Features
Support 2.4GHz, 802.11b/g/n
Integrate Tensilica L106 low consumption 32-bit MCU, the main frequency support
Built-in 10-bit high-precision ADC.
TCP/IP protocol stack.
Integrate TR switch, balun, LNA, power amplifier and matching network.
With PLL, AVR and power management part, 20 dBm output power in 802.11b mode.
A-MPDU, A-MSDU,0.4 s protection interval.
Support WPA/WPA2 Security mode.
Support AT remote upgrade and OTA upgrade.
Support STA/AP/STA+AP work mode
Support Smart-Config function（Android& iOS device）
HSPI,UART, I2C,I2S,IR Remote Control, PWM, GPIO
Deep sleep current is 10 μA , turn-off current is less than 5 μA .
Wake up, connect and transfer data in 2ms.
Figure 1- 1 GWF-KM26
80MHz and 160MHz. With RTOS.
1.3 Product Diagram
Figure 1- 2 ESP8266EX Functional block diagram
Figure 1- 3 GWF-KM26 Front View
1.4 Appearance
GWF- KM26 dimension is 24.3mm*16mm*3.65mm (As shown in the figure below). The SPI flash
capacity is 8 Mbit packaging SOP-208 mil.
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