SPECIFICATIONS

Application: Computer

Brand Name: STJF

Condition: New

Dissipation Power: 1

High-concerned chemical: none

Origin: Mainland China

Package: DIP

Supply Voltage: 1

Type: Voltage Regulator

is_customized: Yes

Product specification

Hardware Specifications
Chipset ESPRESSIF- -B 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASH QSPI flash 4MB / PSRAM 8MB
SRAM 520 kB SRAM
Button reset
Power indicator lamp red
USB to TTL CP2104
Modular interface UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA pre-amplifier
On-board clock 40MHz crystal oscillator
Working voltage 2.7V-3.6V
Working current about 30mA
Sleep current 10uA
Working temperature range -40℃ ~ +85℃
Size&weight 40.27mm*31.07mm*8.13mm(6.42g)
Power Supply Specifications
Power Supply USB 5V/1A
Charging current 500mA
Battery 3.7V lithium battery
Wi-Fi Description
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 Description
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 Description
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 IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT
User Configuration AT + Instruction set, cloud server, android/iOSapp
OS FreeRTOS