Hekr V1.1 WIFI Module
Features：
a：802.11 b/g/n protocol
b：WIFI @2.4 GHz, support WPA/WPA2 PSK
c：Integrated 10 bit analog ADC
d：Integrated TCP/IP protocol stack
e：Integrated TR switch, balun, LNA, power amplifier and matching network
f：Integrated PLL, regulators and power management units
g：+19.5dBm output power in 802.11b mode
h：Supports antenna diversity
i：Power down leakage current of < 10uA
j：Integrated low power 32-bit MCU
k：Wake up and transmit packets in < 2ms
l：Standby power consumption of < 1.0mW (DTIM3)
m：Working temperature -40 ~ 125℃
Module Parameter：
WIFI Parameter
WiFi Protocles 802.11 b/g/n
Frequency
Range
Tx Power 802.11 b: 18dBm
2.4G-2.5G(2400M-2483.5M)
802.11 g: 15dBm
802.11 n: 13dBm
Rx
Sensitivity
Hardware Parameter Peripheral Bus
Operating
Voltage
Operating
Current
Operating
Temperature
Range
Software Parameter WIFI Mode station/softAP/SoftAP+station
802.11 b: (11Mbps) -91db
802.11 g: (54Mbps) -75db
802.11 n: (MCS7) -72db
UART、PWM、IIC、GPIO
3.3V
MAX 230mA
-40°~ 125°
Network
Protocol
Security WPA/WPA2
Encryption WEP/TKIP/AES
Firmware
Upgrade
IPv4， TCP/UDP/HTTP/FTP
Local UART Download/
OTA via network
Definition of Pins：
Pin Name Function
1 RST Module Reset
2 3V3 Power Supply
3 GND Ground
4 SDA IIC Data line，PWM Output，GPIO Input/output
5 SCK IIC Clock line，PWM Output，GPIO Input/output
6 RXD UART0_RXD, GPIO3
7 TXD UART0_TXD, GPIO1
Applications:
This module is adapted to data unvarnished transmission and simple control, for example, socket,
LED, sensors etc. UART communication protocol can be customized according to the
manufacturers demands.
Notice:
You can add π-type filter circuit to do the filtering process. Additionally, you can use a large
capacitor with 47uF to meet the current the chip emit needs instantly. Module should be placed
preferably away from interference sources, such as: transformers, inductors, clock lines, crystal
and so on.
This device complies with Part 1
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.
This device and its antenna(s) must not be co-located or operating in conjunction with
any other antenna transmitter. This equipment should be installed and operated with a
minimum distance of 20 centimeters between the radiator and your body.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
No
te: This equipment has been tested and found to comply with the limits for a Class B
igital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
d
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
u
sed in accordance with the instructions, may cause harmful interference to radio
communication
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning 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.
s. However, there is no guarantee that interference will not occur in a
5 of the FCC Rules. Operation is subject to the following
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