Hi-Link WM7628N-A Manuel utilisateur

SHENZHEN HI-LINK ELECTRONIC CO.,LTD

WM7628N-A User Manual

CONTENTS

1.1. BASIC PARAMETER........................................................................................................................................ 10

DIAGRAM.................................................................................................................................................................11

ELECTRICAL CHARACTERISTIC............................................................................................................................ 12

3.1. POWER SUPPLY REQUIREMENT...................................................................................................................... 12

3.2. RF PERFORMANCE...........................................................................................................................................12

802.11B11M.....................................................................................................................................................12

802.11G54M.....................................................................................................................................................13

802.11NMCS7(HT20).......................................................................................................................................13

802.11N_MCS7(HT40).......................................................................................................................................14

MODULE PINS DEFINITION.................................................................................................................................. 14

4.1. DEFAULT PIN DEFINITION CHART.............................................................................................................. 14

MODULE DIMENSION CHART.................................................................................................................................. 17

EUROPEAN LABEL...................................................................................................................................................18

INTRODUCTION

WM7628N-A based on MT7628NN is a low cost and low power consumption IOT module

developed. This module leads to all the interfaces of MT7628NN,The module supports Linux,

OpenWRT operating system and custom development. It could be widely applied to smart devices

or cloud services application with its rich interface and powerful processors, at the same time ,it

also support secondary development.

1.1. BASIC PARAMETER



High data processing ability，MCU frequency 580MHz



300M Mbps



Support 802.11b/g/n



20/40 Channel bandwidth



Support 802.11v



Support AP,STA and AP,STA mixed



Five 10/100M ETH PORT



1 USB2.0 Host interface port



Interface SPI/SD-XC/eMMC



Rich peripheral interfaces，SPI,I2C,I2S,PCM,UART,JTAG,GPIO



Widely used in IOT



Inbuilt powerful PMU



Support 16 Multiple BSSID



Support multiple security methods WEP64/128, TKIP,AES, WPA, WPA2, WAPI



Support QoS，WMM，WMM-PS



Support Linux 2.6.36 SDK，OpenWrt 3.10

DIAGRAM

WM7628N-A Module architecture diagram

2.1. SPECIFICATIONS

Item

Parameter

Note

Model

WM7628N-A

Version V1.0

Chip

MT7628AN/MT7628NN

Kernel

MIPS24KEc

Basic frequency

580MHz

RAM

DDR2 128MB

Customizable DDR2

64M/32MB

Flash

32MB

Customizable 16MB/8MB

Temperature

Environment temperature：-40℃~85℃

Humidity

Working：10~95%（noncondensing）

Storage：5~95%（noncondensing）

EINT

Ethernet

UART

GPIO

PWM

USB_HOST

SPI

SPIS

I2C

I2S

JTAG

SDXC

MT7628AN

/MT7628NN

3.3V

40MHz

DDR2(1Gbit/128Mbit)

SPI Flash(256Mbit/128Mbit)

IPEX Connector

Size

18mm×35.2mm×2.8mm

2.2. INTERFACE NUMBER

Interface

Contain interface

Interface supported

WiFi Standard

IEEE 802.11b/g/n

Support

Ethernet Interface

Five 10/100M ETH PORT

1 WAN、4 LAN

UART

2 UART support transmitting

SDIO

Non support

SPI

Non support

I2C

Non support

I2S

Non support

PWM

Non support

GPIO

More than

Defined functions

Notes： 1、The module was

default embedded our firmware which based on Linux; the Ethernet,WiFi,UART0 and UART1 of the firmware have

the function of transmission

2、Based on actual usage, the module also can be embedded OPENWRT program and LINUX program of MTK original

plant before sent out.

ELECTRICAL CHARACTERISTIC

3.1. POWER SUPPLY REQUIREMENT

Power supply requirement

Input voltage

DC:3.3±0.2V

Non-load current

170±50mA

Supply current

≥800mA

3.2. RF PERFORMANCE



802.11b 11M

802.11b Transmit (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Tx Power Level

DQPSK

dBm

Frequency Tolerance

-15

ppm

Spectral Mask

11MHz→22MHz

dBr

＞22MHz

dBr

Modulation Accuracy

All Data Rate

802.11b Receiver (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Min. Input

11Mbps PER<8%

-91.5

-89.5

-87.5

dBm



802.11g 54M

802.11g Transmit (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Tx Power Level

OFDM

dBm

Frequency Tolerance

-15

ppm

Modulation Accuracy

All Data Rate

-31

-28

802.11g Receiver (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Min. Input

54Mbps PER<10%

-78.0

-76.0

-74.0

dBm



802.11n MCS7(HT20)

802.11n_HT20 Transmit (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Tx Power Level

OFDM

dBm

Frequency Tolerance

-15

ppm

Modulation Accuracy

All Data Rate

-31

-28

802.11n_HT20 Receiver (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Min. Input

MCS7 PER<10%

-76.5

-74.5

-72.5

dBm



802.11n_MCS7(HT40)

802.11n_HT40 Transmit (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Tx Power Level

OFDM

15.0

17.0

19.0

dBm

Frequency Tolerance

-15

ppm

Modulation Accuracy

All Data Rate

-31

-28

802.11n_HT40 Receiver (Conductive)

Item

Condition

Min.

Typ.

Max.

Unit

Frequency Range

Channel 1

Channel 13

Min. Input

MCS7 PER<10%

-76.5

-74.5

-72.5

dBm

MODULE PINS DEFINITION

4.1.DEFAULT PIN DEFINITION CHART

Name(Function 1)

Function 2

Function 3

Function 4

Note

GND

Supply current≥800mA

GND

bus chip select

REF_CLK0

Reference clock output

PERST_N

device reset

WDT_RST_N

Watchdog reset

EPHY_LED4

JTAG_RST_

EPHY_LED3

JTAG_CLK

EPHY_LED2

JTAG_TMS

EPHY_LED1

EPHY_LED0

JTAG_TDO

PORST_N

CPU reset

UART_TXD1

PWM_CH0

Port 1 date transmission

UART_RXD1

PWM_CH1

Port 1 date reception

PCMDRX

date input

PCMDTX

date output

PCMCLK

sound channel

selection

left

；

right

PCMFS

GND

ANT

Antennal RF interface(not

connect)

GND

SP 1

UART_TXD

#12

Port 0 date output

UART_RXD

#13

Port 0 date input

WLED_N

#44

PWM_CH0

#14

PWM_CH1

#15

UART_TXD

#16

UART_RXD

#17

eMMC_D7

PWM_CH0

#18

eMMC_D6

PWM_CH1

#19

UART_TXD2

eMMC_D5

PWM_CH2

#20

UART_RXD2

eMMC_D4

PWM_CH3

#21

SD_WP

eMMC_WP

#22

SD_CD

eMMC_CD

#23

SD_D1

eMMC_D1

#24

SD_D0

eMMC_D0

#25

SD_CLK

eMMC_CLK

#26

SD_CMD

eMMC_CMD

#28

SD_D3

eMMC_D3

#29

SD_D2

eMMC_D2

#27

USB_DP

USB_DM

GND

Notes：

1，All pins default 1,drive current 8MA.

2， Red representation on the name bar: related to the start of the chip, the outside can not be

pulled up and down, not connected with the driver source.

3，Blue representation on the name bar: The default firmware .

4，The module of MT7628NN chip does not have PCIE interface

MODULE DIMENSION CHART

Module dimension chart (TOP)

Recommended package size diagram

Notes：

1，The three intermediate pads are hot pads, please ground.

2，Package pad epitaxial size can be appropriately shortened or lengthened according to demand.

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