XR68M752：High Performance DUART with 64-Byte FIFO
The XR68M7521 (M752) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs. The M752 operates from 1.62 to 3.63 volts. It is pin-to-pin and software compatible to the TL16C752B and SC16C752B, but with additional features such as a programmable fractional baud rate generator, automatic RS-485 half-duplex direction control, infrared mode and 8X and 4X sampling rate. The standard features include 16 selectable TX and RX FIFO trigger levels, automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control, and a complete modem interface. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. Each channel is independently programmable for data rates up to 16 Mbps at 3.3 Volt with a 4X sampling rate. The XR68M752 has an additional 16/68# pin to select between the Intel and Motorola bus interface. The M752 is available in the 48-pin TQFP and 32-pin QFN packages.
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.
技术特性- 1.62 to 3.6 Volt Operation
- Pin-to-pin and software compatible to TI's TL16C752B and Philips' SC16C752B in the 48-TQFP package
- Two independent UART channels
- Data rate of up to 16 Mbps at 3.3 V
- Data rate of up to 12.5 Mbps at 2.5 V
- Data rate of up to 8 Mbps at 1.8 V
- Fractional Baud Rate Generator
- Data sampling rates of 16X, 8X and 4X
- Transmit and Receive FIFOs of 64 bytes
- Programmable TX and RX FIFO Trigger Levels
- Automatic Hardware (RTS/CTS) Flow Control
- Automatic Software (Xon/Xoff) Flow Control
- Halt and Resume Transmission Control
- Automatic RS-485 Half-duplex Direction Control Output via RTS#
- Wireless Infrared (IrDA 1.0) Encoder/Decoder
- Automatic sleep mode
- Full modem interface
- Two independent UART channels
- Data rate of up to 16 Mbps at 3.3 V
- Data rate of up to 12.5 Mbps at 2.5 V
- Data rate of up to 8 Mbps at 1.8 V
- Fractional Baud Rate Generator
- Data sampling rates of 16X, 8X and 4X
- Transmit and Receive FIFOs of 64 bytes
- Programmable TX and RX FIFO Trigger Levels
- Automatic Hardware (RTS/CTS) Flow Control
- Automatic Software (Xon/Xoff) Flow Control
- Halt and Resume Transmission Control
- Automatic RS-485 Half-duplex Direction Control Output via RTS#
- Wireless Infrared (IrDA 1.0) Encoder/Decoder
- Automatic sleep mode
- Full modem interface
- Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input
- 48-TQFP and 32-QFN packages
- Pb-Free, RoHS Compliant Versions Offered
数据手册S应用指南电路图Product Change Notification | 产品应用- Portable Appliances
- Telecommunication Network Routers
- Ethernet Network Routers
- Cellular Data Devices
- Factory Automation and Process Controls
| 规格 | 参数 | | 中央处理器接口 | Motorola | | 频道 | 2 | | Max Data Rate @ 5/3.3/2.5/1.8V (Mbps) | na/16/12.5/8 | | 发送器/接收器FIFO(Bytes) | 64/64 | | 发送器/接收器FIFOCtrs | No | | 发送器/接收器FIFOINT Trig | 4 Levels/ 4 Levels | | 自动RTS/CTS | Yes | | IrDa供应 | Yes | | 5VTol输入 | No | | 电压供应 | 1.62-3.63 | | 封装 | TQFP-48, QFN-32 | | 数据传输速率@5/3.3/2.5V | na/16/12.5 |
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订购型号
| 器件型号 | 封装编码 | 最低温度 | 最高温度 | 状态 |
|---|
| XR68M752IB49-F | BGA49 | -40 | 85 | EOL |
| XR68M752IL32-F | QFN32 | -40 | 85 | Active |
| XR68M752IL32TR-F | QFN32 | -40 | 85 | Active |
| XR68M752IM48-F | TQFP48 | -40 | 85 | Active |
| XR68M752IM48TR-F | TQFP48 | -40 | 85 | Active |
