DS2490数据手册集成电路（IC）的专用规格书PDF

描述 Description

The DS2490 is a bridge chip that enables communication between a USB host system and a 1-Wire® bus. It provides regular, overdrive, and flexible 1-Wire communication speeds and a full-speed 12Mbps connection to USB. USB vendor-specific commands defined in this specification are used to control the DS2490 and communicate with attached 1-Wire devices. A functional block diagram of the DS2490 is shown in Figure 1 of the full data sheet.

特性 Features

• Communicates at regular and overdrive 1-Wire speeds
• Supports stiff 5V pullup for EEPROM, sensors, and crypto iButton®
• Slew rate controlled 1-Wire timing and active pullup to accommodate long 1-Wire network lines and reduce radiation
• Programmable 1-Wire timing and driver characteristics accommodate a wide range of 1-Wire network configurations
• Low- to high-level command types, including macros, for generating 1-Wire communication
• Crystal oscillator timebase provides precision timed 1-Wire waveforms
• High-speed 12Mbps Universal Serial Bus (USB) interface
• Integrated USB-compliant transceiver
• Supports USB remote wake-up from a 1-Wire device event to resume a suspended host system
• 0°C to +70°C operating temperature range

简介

DS2490属于集成电路（IC）的专用。由制造生产的DS2490专用该系列产品可提供所需的功能，用以将信息源/信宿连到各种复杂或范围狭窄应用中的传感器、变送器、致动器、传输介质或其他此类端点。例如，汽车安全气囊驱动器、车身控制和信息娱乐总线、自适应电缆均衡器、智能卡等等。