• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The TL16C552A is an enhanced dual-channel version of the popular TL16C550B asynchronous communications element (ACE). The device serves two serial input/output interfaces simultaneously in microcomputer or microprocessor-based systems. Each channel performs serial-to-parallel conversion on data characters received from peripheral devices or modems and parallel-to-serial conversion on data characters transmitted by the CPU. The complete status of each channel of the dual ACE can be read at any time during functional operation by the CPU. The information obtained includes the type and condition of the transfer operations being performed and the error conditions encountered.

In addition to its dual communications interface capabilities, the TL16C552A provides the user with a bidirectional parallel data port that fully supports the parallel Centronics-type printer interface.

特性

• IBM PC/AT^TM Compatible
• Two TL16C550 ACEs
• Enhanced Bidirectional Printer Port
• 16-Byte FIFOs Reduce CPU Interrupts
• Up to 16-MHz Clock Rate for up to 1-Mbaud Operation
• Transmit, Receive, Line Status, and Data Set Interrupts on Each Channel Independently Controlled
• Individual Modem Control Signals for Each Channel
• Programmable Serial Interface Characteristics for Each Channel:
  • 5-, 6-, 7-, or 8-Bit Characters
  • Even, Odd, or No Parity Bit Generation and Detection
  • 1-, 1-1/2-, or 2-Stop Bit Generation
• 3-State Outputs Provide TTL Drive for the Data and Control Bus on Each Channel
• Hardware and Software Compatible With TL16C452

IBM PC/AT is a trademark of International Business Machines Corporation.