MC33662 Simplified Application Diagram
Operational from a Vsup of 7.0 to 18V DC, the Local Interconnect Network (LIN) is a serial communication protocol, designed to support automotive networks in conjunction with a Controller Area Network (CAN). As the lowest level of a hierarchical network, LIN enables cost-effective communication with sensors and actuators when all the features of CAN are not required.
The three 33662 versions are designed to operate at different maximum baud rates. The 33662LEF and 33662BLEF, and the 33662SEF and 33662BSEF, offer a normal baud rate (20 kbps), and the 33662JEF and 33662BJEF, a slow baud rate (10 kbps). They integrate a fast baud rate (above 100 kbps), as reported by the RXD pin for test and programming modes. They provide excellent EMC (Electromagnetic Compatibility) and Radiated Emission performance, ESD (Electrostatic Discharge) robustness, and safe behavior, in the event of a LIN bus short-to-ground, or a LIN bus leakage during low-power mode. This device is powered by SMARTMOS technology.
- Compatible with LIN Protocol Specification 1.3, 2.0, 2.1, and SAEJ2602-2
- Operational from a VSUP of 7.0 to 18 V DC, functional up to 27 V DC, and handles 40 V during Load Dump
- Active bus wave shaping, offering excellent radiated emission performance
- Sustains up to 15.0kV minimum ESD IEC61000-4-2 on the LIN Bus, 20 kV on the WAKE pin, and 25 kV on the VSUP pin
- Very high immunity against electromagnetic interference
- Automotive Market:
- Body electronics (BCM, gateway, roof, door, lighting, HVAC)
- Powertrain (EMS, start & stop), BMS
- Safety & Chassis (TPMS, seat belt)
The MC34825 device supports various types of external power supplies to charge the battery, such as a dedicated AC/DC adapter or a USB port. It is designed to support the Universal Charging Solution (UCS) recommended by the OMTP (Open Mobile Terminal Platform), as well as to use the same 5-pin micro or mini-USB connector for other wired accessories. It has functions built-in to identify the type of the power supply, and sets low or high charging current, based on the current capability of the power supply. The MC34825 monitors the power supply, and offers an up to 28 V of overvoltage protection (OVP) to the cell phone against failed power supplies. The 34825 also contains analog switches to multiplex the five pins, to support UART and high speed USB data communication, mono or stereo audio headset with or without a microphone and a cord remote controller, manufacturing or researchand-development (R/D) test cables, and other accessories.
- Internal power switch to offer OVP against up to 28 V failed power supply input
- Supports stereo/mono headset with or without microphone and remote controller with pure passive components
- Supports USB or UART R/D test cables
- Supports 32 ID resistance values with a high accuracy 5-bit ADC
- Identifies various types of power supplies to set low or high battery-charging current levels
- Cell phones
- USB universal charging solution (USC-OMTP)
- Supports mini/micro – USB connector
- UART and USB high speed communication
- Remote control/accessories IDs
Designed to operate 4.5 V ≤ VBATP ≤ 36 V, the NXP MC33978 is a multiple switch detection interface (MSDI) . The switch status, either open or closed, is transferred to the microprocessor through a SPI in automotive environments. This SMARTMOS device also features a 24-to-1 analog multiplexer for reading the input channels as analog inputs. The analog selected input signal is buffered and provided on the AMUX output pin for the MCU to read. Independent programmable wetting currents are available as needed for the application. A battery and temperature monitor are included in the IC and available via the AMUX pin.
The 33978 device has two modes of operation, Normal and Low-power mode(LPM). Normal mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors the change of state on the switches. The LPM provides low quiescent current, which makes the 33978 ideal for automotive and industrial products requiring low sleep-state currents.
Simplified Application Diagram
- Operating switch input voltage range from -1.0 V to 36 V
- Eight programmable inputs (switches to battery or ground)
- 14 switch-to-ground inputs
- Selectable wetting current (2, 6, 8, 10, 12, 14, 16, or 20 mA)
- Interfaces directly to an MCU using 3.3 V / 5.0 V SPI protocol
- Heating ventilation and air conditioning (HVAC)
- Central gateway/in-vehicle networking
- Gasoline engine management
- Programmable logic control (PLC)
- Process control, temperature control
- Input-output control (I/O Control)
- Single board comp
PCA9665/PCA9665A can operates as a master or a slave and can be a transmitter or receiver. It serves as an interface between most standard parallel-bus microcontrollers/microprocessors and the serial I²C-bus and allows the parallel bus system to communicate bidirectionally with the I²C-bus. Communication with the I²C-bus is carried out on a Byte or Buffered mode using interrupt or polled handshake. The PCA9665/PCA9665A controls all the I²C-bus specific sequences, protocol, arbitration and timing with no external timing element required.
- Operating supply voltage: 2.3 V to 3.6 V
- Multi-master capability
- Internal oscillator trimmed to 15 % accuracy reduces external components
- 1 Mbit/s and up to 25 mA SCL/SDA IOL (Fast-mode Plus (Fm+)) capability
- I 2C-bus General Call capability Software reset on par
- Add I²C-bus port to controllers/processors that do not have one
- Add additional I²C-bus ports to controllers/processors that need multiple I²C-bus ports
- Converts 8 bits of parallel data to serial data stream to prevent having to run a large number of traces across the entire printed-circuit board
With clock operating voltage of 0.9V to 5.5V, the PCF85063A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. An offset register allows fine-tuning of the clock. All addresses and data are transferred serially via the two-line bidirectional I2C-bus. Maximum data rate is 400 kbit/s. The register address is incremented automatically after each written or read data byte.
- Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
- 400 kHz two-line I²C-bus interface (at VDD = 1.8 V to 5.5 V)
- Low current; typical 0.27 μA at VDD = 3.0 V and Tamb= 25 °C
- Selectable integrated oscillator load capacitors for CL= 7 pF or CL = 12.5 pF
- Battery powered devices
- Digital video camera
- Digital still camera
- Mobile equipment