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參數(shù)資料
| 型號(hào)： | XR16L580IMTR-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 47/49頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 16B 48TQFP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 1，UART |
| FIFO's： | 16 字節(jié) |
| 規(guī)程： | RS232，RS422 |
| 電源電壓： | 2.25 V ~ 5.5 V |
| 帶自動(dòng)流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動(dòng)位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應(yīng)商設(shè)備封裝： | 48-TQFP（7x7） |
| 包裝： | 帶卷 (TR) |
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XR16L580
7
REV. 1.4.2
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
1.0 PRODUCT DESCRIPTION
The XR16L580 (L580) is an enhanced 16C550 Universal Asynchronous Receiver and Transmitter (UART). Its
features set is compatible to the ST16C580 device and additionally offers Intel or Motorola data bus interface
and Power-Save to isolate the data bus interface during Sleep mode. Hence, the L580 adds 2 more inputs: 16/
68# and PwrSave pins. The XR16L580 can operate from 2.25V to 5.5V with 5 volt tolerant inputs. The
configuration registers set is 16550 UART compatible for control, status and data transfer. Also, the L580 has
16-bytes of transmit and receive FIFOs, automatic RTS/CTS hardware flow control, automatic Xon/Xoff and
special character software flow control, transmit and receive FIFO trigger levels, infrared encoder and decoder
(IrDA ver 1.0), programmable baud rate generator with a prescaler of divide by 1 or 4. The L580 is fabricated
using an advanced CMOS process.
Enhanced Features
The L580 UART provides a solution that supports 16 bytes of transmit and receive FIFO memory. The L580 is
designed to work with low supply voltage and high performance data communication systems, that require fast
data processing time. Increased performance is realized in the L580 by the transmit and receive FIFOs, FIFO
trigger level controls and automatic flow control mechanism. This allows the external processor to handle more
networking tasks within a given time. This increases the service interval giving the external CPU additional time
for other applications and reducing the overall UART interrupt servicing time. In addition, the L580 provides the
Power-Save mode that drastically reduces the power consumption when the device is not used. The
combination of the above greatly reduces the CPU’s bandwidth requirement, increases performance, and
reduces power consumption.
Data Bus Interface, Intel or Motorola Type
The L580 provides a host interface that supports Intel or Motorola microprocessor (CPU) data bus interface.
The Intel bus compatible interface allows direct interconnect to Intel compatible type of CPUs using IOR#,
IOW# and CS# inputs for data bus operation. The Motorola bus compatible interface instead uses the R/W#
and CS# signals for data bus transactions. See pin description section for details on all the control signals. The
Intel and Motorola bus interface selection is made through the pin, 16/68#.
Data Rate
The L580 is capable of operation up to 3.125 Mbps at 5V, 2 Mbps at 3.3V and 1 Mbps at 2.5V supply with 16X
internal sampling clock rate. The device can operate with an external 24 MHz crystal on pins XTAL1 and
XTAL2, or external clock source of up to 50 MHz on XTAL1 pin. With a typical crystal of 14.7456 MHz, all
standard data rates of up to 921.6 kbps can be generated.
Internal Enhanced Register Sets
The L580 UART has a set of enhanced registers providing control and monitoring functions. Interrupt enable/
disable and status, FIFO enable/disable, selectable TX and RX FIFO trigger levels, automatic hardware/
software flow control enable/disable, programmable baud rates, infrared encoder/decoder enable/disable,
modem interface controls and status, sleep mode and Power-Save mode are all standard features. Following a
power on reset or an external reset (and operating in 16 or Intel Mode), the registers defaults to the reset
condition and its is compatible with previous generation of UARTs, 16C450, 16C550, 16C580, 16C650A and
16C850.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| XR16L651 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 5.5V UART WITH 32-BYTE FIFO |
| XR16L651CM | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 5.5V UART WITH 32-BYTE FIFO |
| XR16L651CM-0A-EVB | 功能描述:UART 接口集成電路 Supports L651 48 ld TQFP, ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR16L651CM-F | 功能描述:UART 接口集成電路 UARTW/32BYTEFIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR16L651CMTR-F | 制造商:Exar Corporation 功能描述:UART 1-CH 32Byte FIFO 2.5V/3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16L651CMTR-F |
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