Connect the module to the host device using the UART
interface.
Ensure that the DC supply voltage from the host device is
within the recommended operating conditions of 2.97V to 3.63V.
Operate the module within the recommended operating temperature
range of -20°C to +85°C.
Use the BLE and WiFi modes of the module as per the recommended
power consumption levels mentioned in the user manual.
Refer to the pin assignments table for connecting external
devices to the module.

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CM 0 1 W TA1 1 M Appr ova l She e t

Revision Date Revision No. Total Pages

20230504 1.0 19

CM01WTA11M (BLE/WiFi Combo Module)

USER manual

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Revision History

Revision 1.0

Date

Descriptions

2022-05-10 Initial release

–

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Table of Contents

Revision History………………………………………………………………………………………………………………… 2 Table of Contents …………………………………………………………………………………………………………….. 3
1 General Description ……………………………………………………………………………………………………. 4 1.1 Application………………………………………………………………………………………………………………… 4 1.2 Features ……………………………………………………………………………………………………………………. 5 1.3 Picture………………………………………………………………………………………………………………………. 5
2 Dimension, Pin Assignments, Pictures ………………………………………………………………………….. 6 2.1 Dimension…………………………………………………………………………………………………………………. 6 2.2 Pin Assignments …………………………………………………………………………………………………………. 7 2.3 Application design guide ……………………………………………………………………………………………… 8 3.1 Absolute Maximum Ratings …………………………………………………………………………………………… 9 3.2 Power Consumption …………………………………………………………………………………………………….. 9
3.2.1 WiFi mode…………………………………………………………………………………………………………………………………………………… 9 3.2.2 WiFi Rx mode (Max. current)…………………………………………………………………………………………………………………………… 9 3.2.3 WiFi mode (Max. current) ………………………………………………………………………………………………………………………………. 9 3.2.4 Bluetooth mode ……………………………………………………………………………………………………………………………………………. 9
3.3 Recommended Operating Conditions ………………………………………………………………………………..10 3.4 Environmental Characteristics …………………………………………………………………………………………10 3 RF Specifications ……………………………………………………………………………………………………… 11 3.1 WLAN Receiver RF Specifications…………………………………………………………………………………….11 3.2 WLAN Transmitter RF Specifications ………………………………………………………………………………..12 3.3 Bluetooth RF Specifications ……………………………………………………………………………………………13 4 Manual ……………………………………………………………………………………………………………………. 14 4.1 Interface (UART) …………………………………………………………………………………………………………14 4.2 Module Control (Host module)………………………………………………………………………………….14 4.3 Commend response (module Host) ……………………………………………………………………………16 5 Antenna list ……………………………………………………………………………………………………………… 17 6 FCC Information to User …………………………………………………………………………………………….. 18

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1 General Description
CM01WTA01M (BLE/WiFi Combo module) is a communication module with built-in 802.11 WiFi and Bluetooth functions for digital device applications, and integrates an 802.11n wireless LAN network controller on a single chip based on the Realtek RTL8720CM solution, supporting 2.4GHz WLAN IEEE 802.11 b/g/n MAC/Baseband/Radio and Bluetooth wireless communication functions. In order to exchange operation status and control signals between devices of home appliances products in a wireless communication method, a wireless communication module supporting a short-range digital communication method of a wireless communication method is used.
1.1 Application
Home appliances Rice cooker, Induction range, IoT sensor etc

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1.2 Features
WiFi 802.11 b/g/n 1X1, 2.4GHz Bluetooth Low Energy(BLE) 4.2 Serial peripheral interface (master and slave modes) Compact dimension: 3 5 mm x 2 0 mm / H max: 4 . 8 mm Host Interfaces: UART Interface RoHS compliant
1.3 Picture

Figure 1-1 Module Picture

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2 Dimension, Pin Assignments, Pictures
2.1 Dimension
– L X W X H = 20.0 x 35.0 x 4.8mm

Figure 4-1 Module Dimension

Parameter
Dimension (Module) X Y
Height REV- 1 .0

Condition s

Min.

Nom.

Max.

Unit

–

19.7

20.3

–

29.7

35.3

–

4.8

–

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2.2 Pin Assignments

Figure 4-4 Interface UART Pin Assignments (Top View)

No.

Pin Name

Description

UART1_TX

UART Interface TX

UART1_RX

UART Interface RX

UART2_TX

UART Debug TX

UART2_RX

UART Debug RX

VIN_3V3

+3.3V Power supply(2.97V ~3.63V)

Type O I O I P

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2.3 Application design guide

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Electrical Characteristics
3.1 Absolute Maximum Ratings

Symbol VIN

Parameter DC supply voltage

Min. 2.97

Norm. 3.3

Max. 3.63

Unit V

3.2 Power Consumption 3.2.1 WiFi mode

Parameter

Conditions

WiFi Tx mode (Max. current)

802.11b(2.4GHz)

18dBm Tx Power

802.11g(2.4GHz)

15dBm Tx Power

802.11n(2.4GHz)_20MHz 14dBm TX Power

802.11b(2.4GHz)

20dBm Tx Power

802.11g(2.4GHz)

17dBm Tx Power

802.11n(2.4GHz)_20MHz 16dBm TX Power

3.2.2 WiFi Rx mode (Max. current)

802.11b(2.4GHz)

-60dBm Input Power

802.11n(2.4GHz)_20MHz -60dBm Input Power

3.2.3 WiFi mode (Max. current)

All Standby

WiFi mode

All Off

WiFi mode

Idle

WiFi mode

Min. Nom. Max.

Unit

250
213 mA 205
288
234 mA 222

3.2.4 Bluetooth mode

Parameter

Conditions

BT mode (Type. current)

BT Tx

BT MP, 4.5dBm Tx Power

BT Rx

BLE Central mode

BT ADV

BT Peripheral mode

BT Connection

BT Central mode

Min.

Nom. Max.
131 60 61 61

Unit mA

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3.3 Recommended Operating Conditions

Symbol

Parameter

Conditions

VIN

DC supply voltage from HOST

–

Top

Operating temperature(Ambient)

–

Min.
+2.97 -20

3.4 Environmental Characteristics

Symbol ESD Top Tstg

Parameter Electro-static discharge voltage
Operating temperature Storage temperature

Conditions HBM –

Nom .
+3.3
–

Max. Unit

+3.63

+85 °C

Min. -4K -20 -30

Max. +4K +85 +85

Unit V °C °C

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3 RF Specifications
All measurements are made under nominal supply voltage, room temperature, and conducted conditions at each antenna port except antenna.
3.1 WLAN Receiver RF Specifications

Parameter

Conditions

Min.

Nom.

802.11b/g/n

Receive input frequency (based on center frequency of channel)

2.4GHz

2412

–

802.11b 802.11g 802.11n (HT20)

WLAN 2.4GHz Receiver sensitivity

1Mbps DSSS

–

2Mbps DSSS

PER<8%,

–

5.5Mbps DSSS

Packet size=

–

1,024bytes

11Mbps DSSS

–

6Mbps OFDM

–

9Mbps OFDM

–

12Mbps OFDM 18Mbps OFDM 24Mbps OFDM 36Mbps OFDM

PER<10%,

Packet size=

–

1,024bytes

–

48Mbps OFDM

–

54Mbps OFDM

–

MCS0

–

MCS1

–

MCS2 MCS3 MCS4 MCS5

–

PER<10%,

Packet size=

–

1,024bytes

–

MCS6

–

MCS7

–

-99.0 -95.5 -93.5 -90.0 -94.0 -93.0 -91.5 -89.0 -86.0 -82.5 -78.0 -76.5 -93.5
-91.0 -88.5 -85.5 -82.5 -77.0 -75.5 -74.0

Max. Unit

2472 MHz

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

–

dBm

802.11b 802.11g/n(2.4GHz)

Maximum input level

PER<8%

–

dBm

PER<10%

–

dBm

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3.2 WLAN Transmitter RF Specifications

Parameter

Conditions

Min Nom Max Unit

802.11b/g/n
802.11b (2.4GHz) 802.11g (2.4GHz)
802.11n (2.4GHz) (HT20)

Transmit output frequency (Center frequency of channel)

2.4GHz

2412

–

WLAN 2.4GHz Transmit Channel Power*

1~11Mbps DSSS

–

6Mbps OFDM

–

54Mbps OFDM

–

MCS0

–

MCS7

–

2472 MHz
– dBm – dBm – dBm – dBm – dBm

EVM(Error Vector Magnitude)

802.11b (2.4GHz) 802.11g (2.4GHz)

1~11Mbps DSSS 6Mbps OFDM

–

-5

–

802.11n (2.4GHz) (HT20)

54Mbps OFDM MCS0 MCS7

–

-25

–

-5

–

-28

–

Center Frequency tolerance

802.11b 802.11g 802.11n

2.4GHz 2.4GHz 2.4GHz

-25 (-60)

–

+25

ppm

– (+60)

(kHz)

Remarks * Transmit Channel Power : Transmit channel power is limited within EIRP limit based on country
Regulation in operational mode.
** EVM :<Test condition> . Method: composite EVM method. . Number of symbols: 17. . Phase correction: Symbol-by-symbol correction. . Channel estimation: Raw channel estimate full packet. . Symbol timing correction: on.
. Amplitude tracking: off.
. Frequency Sync: Long training symbol.

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3.3 Bluetooth RF Specifications

Parameter Frequency Range Receiver Sensitivity (PER) Max received signal Transmitter Output Power ICFT Frequency offset

Conditions 2402+K*2MHz (K=0~39)
PER 30.8% PER 30.8%
Average Power
Drift rate Initial drift rate

Min 2402
0
–

Typ. –

Max 2480

Unit MHz

-100

–

dBm

–

dBm

4.5

–

dBm

-15

–

kHz

–

kHz/50us

-2

–

kHz

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4 Manual
4.1 Interface (UART)
Serial port setup Baud Rate Data bits Parity bits Stop bits Flow control

value 115,200 8bit 1bit –

4.2 Module Control (Host module)
Command format: AT<+CMD><=parameter>[][CR][LF] AT Command list

command

description

response

AT+SEND=XXXXXXX

Data send to server

OK[CR][LF]

AT+RESET AT+BROADCAST=XXXXXXXX

Reset
Broadcast BLE advertisement by device name XXXXXXXX

AT+CONNECT AT+OTA_PROD=XXXXXXXX AT+OTA_MOD=XXXXXXXX

Connect to the server Update Product FW(URL: XXXXXXXX) Update module FW(URL: XXXXXXXX)

OK[CR][LF] ATSC=0 ATSC=1

AT+OTA_READY_OK AT+OTA_DONE

Host is ready for OTA OTA completion confirmed

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AT+PRODINFO=XXXX AT+LCDSEND=XXXXXXX AT+NMAC=? AT+RSSI=? AT+MODULEVER=? AT+LCDVER=? AT+SSID=? AT+PWD=?

Set product information XXXX Set LCD type to XXXXXXX Get WLAN MAC Get RSSI Get MODULE version Get LCD version Get SSID SET WLAN PASSWORD

OK_XXXX[CR][LF]

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4.3 Commend response (module Host)

Command response

description

success

ERROR READ=XXXXXX EVENT=TCP_SERVER_CONNECT

Commend fail Rx data from server Successful sever connection

EVENT=TCP_SERVER_FAIL

Sever connection fail

EVENT=TCP_SERVER_DISCONNECT Sever disconnected

EVENT=OTA_READY

OTA ready

EVENT=OTA_START

OTA started

EVENT=OTA_END

OTA completed

EVENT=OTA_FAIL

OTA failed

response
OK[CR][LF] OK[CR][LF]

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5 Antenna list
5.1 Antenna selection guide 1) Impedance: 50 2) Frequency range: 2.4GHz~2.5GHz 3) Peak gain: 3.999dBi 4) Example antenna
– KDT-TE-2450TO-03D-RP (Wi-Fi Dual and 2.4GHz /5GHz) for External Tilt

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6 FCC Information to User
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a 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 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.
Caution THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY AP PROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE. SUCH MODIFICATIONS COULD VOID TH E USER’S AUTHORITY TO OPERATE THE EQUIPMENT.
IMPORTANT NOTE: FCC RF Radiation Exposure Statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
This device complies with part 15 of the FCC Rules. Operation is subject to the following 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 of the device.
A label must be affixed to the outside of the host product with the following statements: Product Name: Wi-Fi CAT (Connected Appliance Transceiver) Module Contains FCC ID: 2AFWN-CM01WTA11M

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Module is limited to OEM installation ONLY. That OEM integrators is responsible for ensuring that the end-user has no manual instructions to remove or install module. That module is limited to installation in mobile or fixed applications, according to Part 2.1091(b). That separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and different antenna configurations.

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