Overview
The PCA9501D,112 is an 8-bit I/O expander with an integrated 2-kbit EEPROM, designed and manufactured by NXP USA Inc. This component is part of NXP's extensive family of I²C-bus and SMBus I/O expanders. It features eight quasi-bidirectional data pins that can be independently configured as inputs or outputs, making it versatile for various applications. The device includes an interrupt output that signals changes in the input state, enhancing system monitoring efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 2.5 to 3.6 | V |
| Operating Temperature | -40 to +85 | °C |
| Input/Output Voltage Tolerance | Up to 5 V | V |
| Clock Frequency | 0 Hz to 400 kHz | Hz |
| Standby Current (IDDQ) | Up to 60 µA | A |
| Supply Current (IDD1, IDD2) | Up to 1 mA (read), Up to 2 mA (write) | A |
| ESD Protection | 2000 V HBM, 200 V MM, 1000 V CDM | V |
| Package Type | SO20, TSSOP20, HVQFN20 | |
| Number of I/O Pins | 8 |
Key Features
- Eight quasi-bidirectional I/O pins that can be independently assigned as inputs or outputs.
- Integrated 2-kbit EEPROM for storing configuration data, error codes, or board manufacturing information.
- Active LOW open-drain interrupt output to signal changes in input states.
- Support for I²C-bus and SMBus protocols with a clock frequency up to 400 kHz.
- 5 V tolerant inputs/outputs.
- Low standby current and low power consumption.
- ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM.
- Available in SO20, TSSOP20, and HVQFN20 packages.
Applications
- Board version tracking and configuration.
- Board health monitoring and status reporting.
- Multi-card systems in telecom, networking, and base station infrastructure equipment.
- Field recall and troubleshooting functions for installed boards.
- General-purpose integrated I/O with memory for various industrial, home automation, and embedded systems.
Q & A
- What is the PCA9501D,112 used for?
The PCA9501D,112 is an 8-bit I/O expander used to expand the I/O capabilities of a host system, with integrated EEPROM for configuration and diagnostic purposes.
- What are the supported communication protocols?
The PCA9501D,112 supports I²C-bus and SMBus protocols.
- What is the operating voltage range of the PCA9501D,112?
The operating voltage range is from 2.5 V to 3.6 V.
- What is the maximum clock frequency supported by the PCA9501D,112?
The maximum clock frequency is 400 kHz.
- What types of packages are available for the PCA9501D,112?
The device is available in SO20, TSSOP20, and HVQFN20 packages.
- Does the PCA9501D,112 have ESD protection?
- What is the purpose of the integrated EEPROM?
The integrated 2-kbit EEPROM is used to store configuration data, error codes, or board manufacturing information.
- How does the interrupt output function?
The active LOW open-drain interrupt output signals changes in the input states, indicating to the system master that an input state has changed.
- What are some common applications of the PCA9501D,112?
Common applications include board version tracking, health monitoring, multi-card systems in telecom and networking, and general-purpose I/O expansion.
- Is the PCA9501D,112 suitable for high-temperature environments?
