Introduction to WiFi Module--TYLC4

WiFi module introduction–TYLC4

1. Product Overview

​ TYLC4 is a low-power embedded Wi-Fi module developed by Hangzhou Tuya Information Technology Co., Ltd., which consists of a highly integrated RFID chip ESP8266 and a few peripheral components with built-in Wi-Fi network protocol stack and abundant library functions. TYLC4 is embedded with low power 32-bit CPU, 1 Mbyte flash memory and rich peripheral resources.

​ TYLC4 is a RTOS platform which integrates all the function libraries of Wi-Fi MAC and TCP/IP protocol, base on which, users are enabled to develop embedded Wi-Fi products according to their specific requirements.

​ The functional principle of TYLC4 is shown as Figure 1:

​ Figure 1 TYLC4  Functional Schematic

1.1 Features

  • The embedded low-power 32-bit CPU can also be used as application processor

​ CPU Clock Speed: 80MHz and 160MHz

  • Working voltage: 3.0V-3.6V
  • Peripheral: 5×GPIOs, 1×UART
  • Wi-Fi connectivity

​ 802.11 b/g/n

​ Channel 1-14@2.4GHz

​ In support of WPA/WPA2 safe mode

​ A maximum output power of +20dBm in the mode of 802.11b

​ In support of STA/AP/STA+AP operating mode

​ In support of two distribution networks including SmartConfig and AP(Android and IOS devices included)

​ Onboard PCB plug-in PiFA antenna

​ Operating temperature: -20℃ to 125℃

1.2 Main applications

  • Intelligent building
  • Smart home/home appliances
  • Smart power plug, intelligent light
  • Industrial wireless control
  • Baby monitor
  • Webcam
  • Intelligent public transportation

1.3 module picture

​ Front picture

​ Negative picture

2. Module Interface

2.1 Size Package

​ TYLC4 has two rows of pins and the spacing between each two pins is 2mm.

​ TYLC4 size: 16.69mm (W)×16.66mm (L) ×3.5mm (H). TYLC4 size is shown in figure2:

2.2 Pin Definition

The interface pin definition is shown in Chart 1:

​ Chart 1 TYLC4 Interface Pin Configuration Instruction

Pin No. Sign IO Type Function
1 RST I/O Hardware reset pin (effective at low electrical level, with pull-up resistor inside)
2 EN I Module enabling pin needs to receive 3.3V power supply
3 GND P Power reference ground
4 GPIO14 I/O GPIO_14
5 GPIO12 I/O GPIO_12
6 GPIO13 I/O GPIO_13
11 VCC P Module’s power pin (3.3V)

Notes: P stands for power pin, I/O stands for input/output pin.

​ RST is only the module hardware reset pin, which cannot erase WiFi distribution network information.

​ (1): UART0 is the user serial port; when the module is powered up, the serial port has information output and user can ignore it.

2.3 Test Point Definition

The test pin definition is shown in Chart 2:

​ Chart 2 TYLC4 Test Pin Configuration Instruction

Pin No. Sign IO Type Function
- TEST1 I/O GPIO2, used for module production test
- TEST2 I/O GPIO0, used for module production test

3. Electrical Parameters

3.1 Absolute Electrical Parameters

​ Chart 3 Absolute Parameters

Parameter Description Minimum Value Maximum Value Unit
Ts Storage temperature -20 85
VCC Supply voltage -0.3 3.6 V
Electrostatic Discharge Voltage (human model) TAMB-25℃ - 2 KV
Electrostatic Discharge Voltage (machine model) TAMB-25℃ - 0.5 KV

3.2 Operating Conditions

​ Chart 4 Normal Operating Conditions

Parameter Description Minimum Value Typical Value Maximum Value Unit
Ta Operating temperature -20 - 125
VCC Operating voltage 3.0 3.3 3.6 V
VIL IO low electrical level input -0.3 - VCC*0.25 V
VIH IO high electrical level input VCC*0.75 - VCC V
VOL IO low electrical level output - - VCC*0.1 V
VoH IO high electrical level output VCC*0.8 - VCC V
Imax IO drive current - - 12 mA

3.3 Wi-Fi Transmitting Power

​Chart 5 TX Continuous Transmitting Power

Sign Parameter Parameter Parameter Typical Value Unit
Mode Mode Rate Transmitting Power
IRF 11b 11Mbps +17dBm 220 mA
IRF 11g 54Mbps +15dBm 110 mA
IRF 11n MCS7 +13dBm 100 mA

3.4 Wi-Fi Receiving Power

                                                  Chart 6 RX Continuous Receiving
PowerSign Mode Rate Typical Value Unit
IRF 11b 11Mbps 76 mA
IRF 11g 54Mbps 76 mA
IRF 11n MCS7 76 mA

3.5 Power in Operating Mode

                                                      Chart 7 TYLC4 Operating Current
Operating Mode Operating Status, Ta=25℃ Average Value Maximum Value Unit
Fast connection distribution network When the module is in a state of fast connection distribution network, WiFi indicator light flashes quickly 80 151 mA
Hot spot distribution network When the module is in a state of hot spot distribution network, WiFi indicator light flashes slowly 90 451 mA
Internet connection When the module is with internet connection, WiFi indicator light goes on 58.5 411 mA
Offline When the module is offline, WiFi indicator light goes out 80 430 mA

4. RF Characteristics

4.1 Basic RF Characteristics

​ Chart 8 RF Basic Characteristics

Parameter Detailed Description
Operating frequency 2.412~2.484GHz
Wi-Fi standard IEEE 802.11b/g/n (channel 1-14)
Data transmitting rate 11b:1,2,5.5, 11 (Mbps) 11g:6,9,12,18,24,36,48,54(Mbps) 11n:HT20 MCS0~7
Antenna type PCB onboard plug-in antenna

4.2 Wi-Fi Output Power

                                                    Chart 9 TX Continuous Transmitting Power
Parameter Minimum Value Typical Value Maximum Value Unit
RF average output power, 802.11b CCK Mode 1M - 20 - dBm
RF average output power, 802.11g OFDM Mode 54M - 17 - dBm
RF average output power, 802.11n OFDM Mode MCS7 - 14 - dBm
Frequency Error - -10 - 10 ppm

4.3 Wi-Fi Receiving Sensitivity

​ Chart 10 RX Sensitivity

Parameter Minimum Value Typical Value Maximum Value Unit
PER<8%,RX sensitivity, 802.11b CCK Mode 1M - -91 - dBm
PER<10%,RX sensitivity, 802.11g OFDM Mode 54M - -75 - dBm
PER<10%,RX sensitivity, 802.11n OFDM Mode MCS7 - -72 - dBm

5. Antenna Information

5.1 Antenna Type

​ PCB board has reserved IPEX interfaces to receive antenna with IPEX terminals.

5.2 Reduction of Antenna Interference

​ When using antenna with IPEX terminals on the Wi-Fi module, to ensure the best Wi-Fi performance, it is recommended that the distance between the module antenna and other metal parts should be at least 10mm.

6. Packaging Information and Manufacturing Instructions

6.1 Mechanical Dimensions

6.3 Production Guide

The storage conditions of modules after leaving the factory are shown as follows:

  1. The moisture barrier bag must be stored in an environment where the temperature is lower than 30℃ and the humidity is lower than 85%RH.
  2. Product in dry package has a guarantee period of 6 month since it is sealed in the package.

Matters needing attention:

  1. During the whole production process, each operator must wear an electrostatic ring.
  2. When operating, protect the modules from water or contaminants.