概览
SX1508B 和 SX1509B 是完整的超低电压通用并行输入/输出 (GPIO) 扩展器，非常适合低功耗电池供电手持器件。该系列 GPIO 提供 4、8、16 通道配置，可通过标准 400kHz I2C 接口轻松实现 I/O 串行扩展。
功能
- 工作电压低：1.2 V 至 5.5 V (SX1507B)
- 两个独立 I/O 电压轨（VCC1、VCC2）
- 可直接实现 I/O 之间的电平转换
- 电容组和主机控制器
- I/O 可耐受 5.5 V 电压，所有 I/O 上的输出灌电流高达 15 mA
- （无总灌电流限制）
- 集成 LED 驱动器，可提高照明
- 光强度控制（256 阶 PWM）
- 眨眼控制（224 开/关值）
- 呼吸控制（224 渐高/渐弱值）
- 片上键盘扫描引擎
- 支持 8 x 8 按键矩阵（64 颗按键）
- 可编程输入抖动去除器
- 4/8/16 通道准双向 I/O
- 可编程上拉/下拉
- 推挽输出或开漏输出
- 可编程极性
- 开漏低电平有效中断输出 (NINT)
- 位屏蔽
- 可编程边缘灵敏度
- 内置时钟管理（内部 2 MHz 振荡器/外部时钟输入，7 个时钟值）
- OSCIO 可配置为 GPO
- 与 400 kHz I2C 兼容的从机接口
- 4 个用户可选的 I2C 从设备地址
- 上电复位和复位输入 (NRESET)
- 超低电流消耗：1µA 典型值
- -40°C 至 +85°C 工作温度范围
- 高达 2 kV 的 HBM ESD 防护
- 小型封装
- 无铅、无卤素，且符合 RoHS/WEEE 标准
| 文档 | Release Date | Type |  |
|---|---|---|---|
| SX15xx Power-up Guidelines | 2024-09-17 | | |
应用
- 手机、PDA、MP3 播放器
- 数码相机、笔记本电脑、GPS 设备
- 任何由电池供电的设备
Inventory
| Product | 国家/地区 | 经销商 | Qty | Buy |
|---|
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