Overview
The PCA8575BS,118 is a remote 16-bit I/O expander designed by NXP USA Inc. for general-purpose I/O expansion via the two-line bidirectional I²C-Bus. This device is compatible with many microcontroller families and provides a versatile solution for expanding the I/O capabilities of a system. The PCA8575 features a 16-bit quasi-bidirectional port and an I²C-bus interface, enabling efficient communication and control.
Key Specifications
| Parameter | Value |
|---|---|
| Interface | I²C-Bus (serial clock (SCL), serial data (SDA)) |
| Number of I/O Ports | 16-bit quasi-bidirectional |
| Package Type | HVQFN24 (PCA8575BS,118) |
| Package Dimensions | 4 × 4 × 0.85 mm |
| Power-On Reset (POR) | Internal POR initializes I/Os as inputs |
| Interrupt Line | Open-drain interrupt (INT) line |
| Current Consumption | Low current consumption |
| Output Drive Capability | High current drive capability for directly driving LEDs |
| Environmental Compliance | PbFree, EU RoHS, Halogen Free, REACH SVHC compliant |
Key Features
- 16-bit Quasi-Bidirectional I/O Ports: Each port can be used as either an input or output, providing flexibility in system design.
- I²C-Bus Interface: Supports two-line bidirectional communication with serial clock (SCL) and serial data (SDA) lines.
- Low Current Consumption: Optimized for power efficiency, making it suitable for battery-powered devices.
- High Current Drive Capability: Latched outputs can directly drive LEDs and other high-current devices.
- Interrupt Line (INT): Open-drain interrupt line allows the remote I/O to inform the microcontroller of incoming data without using the I²C-bus.
- Internal Power-On Reset (POR): Initializes the I/Os as inputs upon power-up.
Applications
- Microcontroller Systems: Ideal for expanding the I/O capabilities of microcontrollers in various applications.
- Industrial Automation: Used in control systems, sensors, and actuators where additional I/O is required.
- Consumer Electronics: Suitable for use in devices such as smartphones, tablets, and other portable electronics.
- Automotive Systems: Can be integrated into automotive control systems for expanded I/O functionality.
Q & A
- What is the primary function of the PCA8575BS,118?
The PCA8575BS,118 is a remote 16-bit I/O expander that provides general-purpose I/O expansion via the I²C-Bus. - What type of interface does the PCA8575BS,118 use?
The device uses a two-line bidirectional I²C-Bus interface. - How many I/O ports does the PCA8575BS,118 have?
The PCA8575BS,118 has 16 quasi-bidirectional I/O ports. - What is the package type of the PCA8575BS,118?
The package type is HVQFN24. - Does the PCA8575BS,118 have an interrupt line?
Yes, it has an open-drain interrupt (INT) line. - How does the Power-On Reset (POR) function in the PCA8575BS,118?
The internal POR initializes the I/Os as inputs upon power-up. - Is the PCA8575BS,118 environmentally compliant?
Yes, it is PbFree, EU RoHS, Halogen Free, and REACH SVHC compliant. - What is the current drive capability of the PCA8575BS,118 outputs?
The outputs have high current drive capability for directly driving LEDs. - Can the PCA8575BS,118 be used in industrial automation?
Yes, it is suitable for use in industrial automation systems. - How does the PCA8575BS,118 communicate with the microcontroller?
The device communicates via the I²C-Bus and can also use the interrupt line to inform the microcontroller of incoming data.
