TJA1042 CJMCU-1042 CAN Ultra Low Power High Speed Transceiver Modul 5 Mbit/s 3-5V Level Konverter Modul

TJA1042 CJMCU-1042 CAN Ultra Low Power High Speed Transceiver Module © androegg

TJA1042 CJMCU-1042 CAN Ultra Low Power High Speed Transceiver Module Schematic © androegg

Das CJMCU-1042 Modul basiert auft dem TJA1042T High Speed CAN Transceiver von NXP Semiconductors.

Im Vergleich zum TJA1051 verfügt der TJA1042 zusätzlich über eine Stanby Funktion mittels STB Pin.

Die Standby Funktion wird mittels GPIO einer MCU beschaltet. Mittels STB High Level wird der TJA1042 in Stand By Modus gesetzt und der Stromverbrauch auf 10µA reduziert. Gleichermassen wird der TJA1042 mittels STB Low Level in den Empfangs- und Sende- Modus versetzt.

Ultra Low Power CAN Bus Transceiver TJA1042

Das CJMCU-1042 Modul eignet sich für jedwede MCU mit einem seriellen zwischen 3-5V, beispielsweise

• 3,3V UART
• Raspberry Pi
• ESP8266
• ESP32
• …
• 5V TTL

• Arduino Uno
• Arduino Mega
• Arduino Nano

Hierzu muss lediglich der Vio Pin mit der Versorgungsspannung der MCU (nicht zu verwechseln mit der Boardspannung / bespielsweise NodeMCU) belegt werden.

The CJMCU-1042 module is based on the TJA1042T high-speed CAN transceiver from NXP Semiconductors.

Compared to the TJA1051, the TJA1042 also features a standby function via the STB pin.

The standby function is controlled via the GPIO pin of an MCU. A high-level STB signal puts the TJA1042 into standby mode and reduces its current consumption to 10 µA. Similarly, a low-level STB signal puts the TJA1042 into receive and transmit modes.

Ultra Low Power CAN Bus Transceiver TJA1042

The CJMCU-1042 module is suitable for any MCU with a serial output between 3-5V, for example:

• 3.3V UART
• Raspberry Pi
• ESP8266
• ESP32
• …
• 5V TTL

• Arduino Uno
• Arduino Mega
• Arduino Nano

For this, the Vio pin simply needs to be connected to the MCU’s supply voltage (not to be confused with the board voltage / e.g., NodeMCU).

TJA1042 CAN BUS Transceiver FEATURES:

• • Supply Voltage 4.5 to 5.5V
  • Supply Voltage Vio Pin (serial Level) 2.8-5.5V
  • Supply Current
    • Standby Mode 10µA
    • Normal Mode receive 5mA
    • Normal Mode Transceive 45mA
  • Very low-current Standby mode with host and bus wake-up capability
  • Functional behavior predictable under all supply conditions
  • Transceiver disengages from the bus (high-ohmic) when the supply voltage drops below the switch-off undervoltage threshold
  • Transmit Data (TXD) dominant time-out function
  • Bus-dominant time-out function in Standby mode
  • Undervoltage detection on pins VCC and VIO
  • Low Electromagnetic Emission (EME) and high Electromagnetic Immunity (EMI), according to proposed EMC Standards IEC 62228-3 and SAE J2962-2
  • Fully ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 and SAE J1939-14 compliant
  • interfaced directly with microcontrollers with supply voltages from 3.3 V to 5 V
  • Dimensions:
    Lenght 52 mm
    Diameter 10.2 mm ø
  • Working temperature: – 40 ℃ + 85 ℃