SX1508B数据手册集成电路（IC）的I/O扩展器规格书PDF

描述 Description

The SX1508B and SX1509B are complete ultra low voltage General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. This family of GPIOs comes in 4-, 8-, 16-channel configuration and allows easy serial expansion of I/O through a standard 400kHz I²C interface.

特性 Features

·1.2V to 5.5V (SX1507B) Low Operating
·Voltage with Dual Independent I/O Rails (VCC1, VCC2)·Enable Direct Level Shifting Between I/O

·Banks and Host Controller
·5.5V Tolerant I/Os, Up to 15mA Output Sink on
·All I/Os (No Total Sink Current Limit)
·Integrated LED Driver for Enhanced Lighting·Intensity Control (256-step PWM)
·Blink Control (224 On/Off values)
·Breathing Control (224 Fade In/Out values)

·On-Chip Keypad Scanning Engine·Support Up to 8x8 Matrix (64 Keys)
·Configurable Input Debouncer

·4/8/16 Channels of True Bi-directional Style I/O·Programmable Pull-up/Pull-down
·Push/Pull or Open-drain outputs
·Programmable Polarity

·Open Drain Active Low Interrupt Output (NINT)·Bit Maskable
·Programmable Edge Sensitivity

·Built-in Clock Management (Internal 2MHz Oscillator/External Clock Input, 7 clock values)
·OSCIO can be Configured as GPO
·400kHz I2C Compatible Slave Interface
·4 User-Selectable I²C Slave Addresses
·Power-On Reset and Reset Input (NRESET)
·Ultra Low Current Consumption: 1uA Typ
·-40°C to +85°C Operating Temperature Range
·Up to 2kV HBM ESD Protection
·Small Footprint Packages
·Pb & Halogen Free, RoHS/WEEE compliant

应用 Application

·Cell phones, PDAs, MP3 players
·Digital camera, Notebooks, GPS Units
·Any battery powered equipment

简介

SX1508B属于集成电路（IC）的I/O扩展器。由制造生产的SX1508BI/O 扩展器该系列器件可与微控制器、微处理器或类似器件结合使用，目的是增加可用于连接外设的信号连接数量。典型的工作概念涉及使用串行通信，只需主机设备上的几根 I/O 线，即可读/写扩展器设备上的许多输入/输出引脚的状态。该技术的通信速度不佳，但连通性较高，最适合快速响应不是很关键的应用，例如许多人机界面应用。