产品概览
PCAL6524HEAZ from NXP is a 24-bit I2C GPIO expander with programmable pull-up/pull-down, interrupt, latch. HVQFN-28.
工作原理
Advanced I2C GPIO expander with 24 quasi-bidirectional I/O pins. Programmable pull-up/pull-down resistors. Input latch for stable reads. Interrupt output on input change. Software reset. 400kHz I2C. 1.65-5.5V I/O with level translation.
Pin Description
| 别针组 | 功能 | 计数 |
|---|---|---|
| P0-P2 | GPIO ports | 24 |
| I2C | SDA/SCL | 2 |
| INT | 中断 | 1 |
应用
- GPIO expansion
- LED control
- Keyboard scanning
- Industrial I/O
Alternative Models
| Mfr | Part | 说明 |
|---|---|---|
| 恩智浦 | PCAL6416AHEAZ | 16-bit version |