XR16V2551 High Performance DUART with 16-Byte FIFO and Powersave Feature
The XR16V25511 (V2551) is a high performance dual universal asynchronous receiver and transmitter (UART) with 16 byte TX and RX FIFOs. The device operates from 2.25 to 3.6 volts with 5 Volt tolerant inputs and is pin-to-pin compatible to Exar's XR16V2651 and XR16L2551. The device includes 2 additional capabilities over the XR16V2550: Intel and Motorola data bus selection and a "PowerSave" mode to further reduce sleep current to a minimum during sleep mode. It supports Exar's enhanced features of selectable FIFO trigger level, automatic hardware (RTS/CTS) and software flow control, and a complete modem interface. An internal loopback capability allows system diagnostics. Independent programmable fractional baud rate generators are provided in each channel to select data rates up to 16 Mbps at 3.3 Volt and 4X sampling clock. The V2551 is available in 48-pin TQFP and 32-pin QFN packages.
技术特性
- 2.25 to 3.6 Volt Operation
- 5 Volt Tolerant Inputs
- Pin-to-pin compatible to Exar's XR16V2651 and the XR16L2551
- Two independent UART channels
- Register set identical to 16V2550
- Data rate of up to 16 Mbps at 3.3 V, and 12.5 Mbps at 2.5 V with 4X sampling rate
- Fractional Baud Rate Generator
- Transmit and Receive FIFOs of 16 bytes
- Selectable TX and RX FIFO Trigger Levels
- Automatic Hardware (RTS/CTS) Flow Control
- Automatic Software (Xon/Xoff) Flow Control
- Wireless Infrared (IrDA 1.0) Encoder/Decoder
- Automatic sleep mode with wake-up interrupt
- Full modem interface
- PowerSave Feature reduces sleep current to 15 µA
- Device Identification and Revision
- Crystal oscillator (up to 32MHz) or external clock (up to 64MHz) input
- 48-TQFP and 32-QFN packages
- Pb-Free, RoHS Compliant Versions Offered
订购信息 Ordering Information
| 器件型号 |
有害物质限制 |
最低温度 |
最高温度 |
状态 |
立刻购买 |
申请样片 |
| XR16V2551IL-F |
|
-40 |
85 |
Active |
|
|
| XR16V2551ILTR-F |
|
-40 |
85 |
Active |
|
|
| XR16V2551IM-F |
|
-40 |
85 |
Active |
|
|
| XR16V2551IMTR-F |
|
-40 |
85 |
Active |
|
技术指标
| 中央处理器接口 |
Intel/Motorola/VLIO |
| 频道 |
1 |
| 数据传输速率@5/3.3/2.5V |
na/24/na |
| Max Data Rate @ 5/3.3/2.5/1.8V (Mbps) |
na/24/16/9 |
| 发送器/接收器FIFO(Bytes) |
128/128 |
| 发送器/接收器FIFOCtrs |
Yes |
| 发送器/接收器FIFOINT Trig |
Program/ Program |
| 自动RTS/CTS |
Yes |
| IrDa供应 |
Yes |
| 5VTol输入 |
Yes |
| 电压供应 |
1.62-3.63 |
| 封装 |
QFN-32, QFN-40, TQFP-48 |
应用领域 APPLICATION
- Portable Appliances
- Telecommunication Network Routers
- Ethernet Network Routers
- Cellular Data Devices
- Factory Automation and Process Controls
功能框图 Functional Block Diagram
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