ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC XPNDR 400KHZ I2C SPI 24HVQFN
- Series：-
- Mfr：NXP USA Inc.
- Package：Tray
- Number of I/O：8
- Interface：I2C, SPI
- Interrupt Output：No
- Features：-
- Output Type：Push-Pull
- Current - Output Source/Sink：-
- Clock Frequency：400 kHz
- Voltage - Supply：2.3V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-HVQFN (4x4)
- Grade：-
- Qualification：-
Download product information
Overview
The PCA9502BS is an 8-bit I/O expander featuring a selectable I2C-bus or SPI host interface. It operates at 3.3 V or 2.5 V and supports up to 16 hardware-selectable slave addresses via A0 and A1 pins. The device provides eight programmable GPIO pins, software reset capability, and interrupt generation on input state changes. It functions in slave mode only for both interfaces. The I2C bus supports speeds up to 400 kbit/s with noise filters, while the SPI interface supports Mode 0 with speeds up to 15 Mbit/s. Operating temperature ranges from -40 °C to +85 °C.
Feature Summary
- Selectable I2C-bus or SPI interface configuration
- Eight programmable general-purpose I/O pins
- Software reset functionality independent of hardware signals
- Interrupt generation on input pin state changes
Applications
- Factory automation and process control
- Portable and battery-operated devices
- Cellular data devices
Procurement Notes
Verify the specific ordering suffix matches the required package variant. Confirm that the selected communication protocol aligns with the host controller's available resources. Ensure voltage levels are compatible with the target system environment before finalizing procurement.
Selection Notes
Select this component when flexible interface options between I2C and SPI are required within a compact footprint. Consider the device if hardware address selection is needed to support multiple units on a single bus without complex software addressing schemes.
Part Context
This part belongs to the PCA9502 series of I/O expanders manufactured by NXP Semiconductors. It is designed for applications requiring minimal board space and low power consumption, utilizing the HVQFN24 package to facilitate integration into handheld and portable electronic designs.
Replacement Considerations
Direct replacements must maintain the HVQFN24 package and dual-interface capability. Verify compatibility regarding register maps and electrical characteristics such as supply voltage and operating temperature range.
