TTGO T-Watch-2020 ESP32 Main Chip 1.54 Inch Touch Display Programmable Wearable Environmental Interaction

Hardware Specifications

Chipset

ESP32, dual-core MCU, PMU power management

FLASH

QSPI flash 16MB 

SRAM 

520 KB SRAM / PSRAM  8MB

Button

Power key 

USB to TTL

CP2104

On-board clock

40MHz crystal oscillator 

Working voltage

2.7V-3.6V

Working current

60ma

Sleep current

1.7ma

Working temperature range

-40℃ ~ +85℃

Weight

58.5g

Display: 

1.54 inch LCD capacitive touch screen

BMA423 three-axis accelerometer, built-in step counting algorithm, activity recognition / tracking, advanced gesture recognition.

PCF8563

Battery Model :     LQ-S1

Power Supply Specifications

Power Supply

Micro USB (5V/1A)

Charging current

The charging current is programmable and self-adjustable (default 380mA)

Battery

3.7V lithium battery

Wi-Fi

Standard

FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC

Protocol

802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval

Frequency range

2.4GHz~2.5GHz(2400M~2483.5M)

Transmit Power

22dBm

Communication distance

300m

Bluetooth

Protocol

meet bluetooth v4.2BR/EDR and BLE standard

Radio frequency

with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH

Audio frequency

CVSD&SBC audio frequency

Software specification

Wi-Fi Mode

Station/SoftAP/SoftAP+Station/P2P

Security mechanism

WPA/WPA2/WPA2-Enterprise/WPS

Encryption Type 

AES/RSA/ECC/SHA

Firmware upgrade

UART download/OTA（Through network/host to download and write firmware）

Software Development

Support cloud server development /SDK for user firmware development

Networking protocol

User Configuration

OS

FreeRTOS