Thông số kỹ thuật
Nhà sản xuất: STMicroelectronics
Device Type: Dual-channel IO-Link and SIO industrial transceiver chip, compact QFN packaged component dedicated for smart factory field sensors and actuators, used as the interface bridge between main microcontrollers and 24V industrial bus cables
Thông số kỹ thuật điện
Input supply voltage range: 5 V to 35 V, fully adaptable to standard 24V industrial field bus power supply
Digital I/O voltage compatibility: 2.5 V to 5 V, matches 3.3V and 5V mainstream industrial microcontrollers
Built-in power supply modules
Two linear LDO regulators: 3.3V/50mA and 5V/50mA
One configurable DC-DC step-down converter with maximum output current 50mA, adjustable output voltage from 5 V to 10.5 V, switching frequency tunable between 0.5 MHz and 2 MHz
Dual communication channel parameters
CQ channel (IO-Link dedicated bus): single channel maximum output current 250 mA
DIO channel (general digital IO): single channel maximum output current 250 mA
Two channels can be paralleled to reach total 500 mA driving capacity
Output stage internal resistance fixed at 5 ohms for low power consumption
Adjustable current limiting threshold range: 110 mA to 250 mA
Supported IO-Link communication rates: COM2 38.4 kbps, COM3 230.4 kbps
Operating junction temperature range: -40 °C to 150 °C
Package specification: 20-pin QFN exposed pad package with overall size 4 mm × 4 mm
Core Functional Features
Supports two working modes interchangeably: standard SIO single digital input-output mode and standardized IO-Link industrial communication mode. Under SIO mode, the chip acts as ordinary digital signal transceiver controlled by MCU; when connected to IO-Link master stations, it automatically responds to wake-up signals and serves as physical layer transceiver for industrial bidirectional data interaction.
Three configurable output working modes for CQ and DIO ports: high-side drive, low-side drive and push-pull output, flexible for different field wiring demands.
Multiple built-in comprehensive protection circuits. All bus pins withstand ±1.5kV surge pulse interference and reverse power connection damage. Embedded undervoltage lockout, programmable thermal shutdown, overcurrent latch protection to avoid chip burnout under harsh industrial power fluctuation conditions.
Three optional data transmission modes between chip and MCU: transparent UART mode, single-byte SPI mode and multi-byte SPI buffer mode. The chip can independently complete IO-Link protocol framing and verification work, greatly reducing computing load of peripheral microcontrollers.
Equipped with two LED drive pins, each supporting up to 8mA constant current drive for status indicator lights on sensor housings. A 7-bit calibrated internal temperature sensor collects chip operating temperature data, and an interrupt pin feeds back fault status, wake-up events and temperature information to MCU in real time.
Integrated clock extraction circuit eliminates the need for external crystal oscillator to realize IO-Link timing sequence generation, simplifying peripheral circuit layout and reducing overall material costs.
Các tình huống ứng dụng điển hình
Industrial proximity sensors, pressure sensors, temperature and humidity measurement terminals
Factory automation digital actuators, pneumatic valve control modules
Intelligent assembly line field IO acquisition nodes
Process control equipment signal conversion terminals
Industry 4.0 smart field bus peripheral equipment
Small industrial monitoring transmitters with IO-Link communication function
