TYLC4 Reset & Teardown (FCC ID 2ANDL-TYLC4)

TYLC4v1.0.0 User manual
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 RF 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. 
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
 Channels [email protected]
 In support of WPA/WPA2 safe mode
 In support of STA/AP/STA+AP operating mode
 In support of two distribution networks including SmartConfig and AP(Android and
IOS devices included) 
 Operating temperature: -20℃ to 125℃
1.2 Main applications 
 Intelligent building
 Smart home/home appliances
 Smart power plug, intelligent light
 Industrial wireless control
 Baby monitors
 Webcams
 Intelligent public transportation
TYLC4v1.0.0 User manual
2.2 Pin definition 
 Version1.0.04
2. Module Interfaces
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： 
Figure 2.1, TYLC4 dimensional drawing 
The interface pin definition is shown in Chart 1: 
Chart 1 TYLC4 Interface Pin Configuration Instruction 
Table 2.1
，WR1 pins description 
Pin Symbol IOType 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 
7 GPIO4 I/O GPIO_04 
8 GPIO5 I/O GPIO_05 
9 RXD0 I/O UART0_RXD 1 
10 TXD0 O UART0_TXD 1 
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.

TYLC4v1.0.0 User manual
 Version1.0.05
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 Symbol IOType 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 
Parameters Description Minimu
m value 
Maximu
m value Unit 
Ts Storage 
temperature -20 85 ℃ 
VCC Supply 
voltage -0.3 3.6 V 
Electrostatic Discharge TAMB-25℃ - 2 KV 
(1): UART0 is the user serial port; when the module is powered up, the serial port has 
Voltage (human mod...