SPECIFICATIONS
- Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
- FLASH: QSPI flash 4MB
- SRAM: 520 kB SRAM / PSRAM 8MB
- Button: Reset
- USB to TTL: CP2104
- Modular interface: UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC
- On-board clock: 40MHz crystal oscillator
- Working voltage: 2.7V-3.6V
- SIM card: Only supports Nano SIM card
- Working temperature range: -40℃ ~ +85℃
- Size & Weight: 75.1530.6410.70mm(14.5g)
Power Supply Specifications
- Power Supply: USB 5V
- Charging current: The charging current is programmable and self-adjustable (default 500mA)
- Battery: 3.7V lithium battery
- JST Connector: 2Pin 2.0mm
- USB: Type-C
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: IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT
- User configuration: AT + Instruction set, cloud server, android/iOSapp
- OS: FreeRTOS
T-Call&PMU Pin Diagram:
T-Call&PMU Size Chart
Comparison of T-Call & PMU and T-Call V1.3
AXP192 is the power supply used on the T-Call & PMU board. It is an upgraded version of T-Call V1.3:
- Change the power IC to AXP192 PMU management, support coulomb counter and high precision voltage and current Test function.
- SIM800L RI Pin leads to ESP32, can accept voice or data calls, Wake up from received message.
- The SIM800L DTR Pin leads to SP32, which can wake up SIMM800L from sleep state.
DOCUMENTATIONS
SHIPPING LIST
-
1 X T-Call&PMU
-
2 X Pin
-
1 X SIM Antenna (7 cm)
-
1 X Power Cable
