• - 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 ’754C is a quad universal asynchronous receiver/transmitter (UART) with 64-byte FIFOs, automatic hardware/software flow control, and data rates up to 3 Mbps. It incorporates the functionality of four UARTs, each UART having its own register set and FIFOs. The four UARTs share only the data bus interface and clock source, otherwise they operate independently. Another name for the UART function is Asynchronous Communications Element (ACE), and these terms are used interchangeably. The bulk of this document describes the behavior of each ACE, with the understanding that four such devices are incorporated into the ’754C. The ’754C offers enhanced features. It has a transmission control register (TCR) that stores received FIFO threshold level to start/stop transmission during hardware and software flow control.

特性

• ST16C654/654D Pin Compatible With Additional Enhancements
• Support up to 24-MHz Crystal Input Clock (1.5 Mbps)
• Support up to 48-MHz Oscillator Input Clock (3 Mbps) for 5-V Operation
• Support up to 32-MHz Oscillator Input Clock (2 Mbps) for 3.3-V Operation
• Support up to 24-MHz Input Clock (1.5 Mbps) for 2.5-V Operation
• Support up to 16-MHz Input Clock (1 Mbps) for 1.8-V Operation
• 64-Byte Transmit FIFO
• 64-Byte Receive FIFO With Error Flags
• Programmable and Selectable Transmit and Receive FIFO Trigger Levels for DMA
  and Interrupt Generation
• Programmable Receive FIFO Trigger Levels for Software/Hardware Flow Control
• Software/Hardware Flow Control
  • Programmable Xon/Xoff Characters
  • Programmable Auto-RTS and Auto-CTS
• Optional Data Flow Resume by Xon Any Character
• RS-485 Mode Support
• Support 1.8-V, 2.5-V, 3.3-V, or 5-V Supply
• Characterized for Operation From –40°C to 85°C,
  Available in Commercial and Industrial Temperature Grades
• Software-Selectable Baud-Rate Generator
• Prescaler Provides Additional Divide-by-4 Function
• Programmable Sleep Mode