参数资料
型号: XR19L400IL40TR-F
厂商: Exar Corporation
文件页数: 7/46页
文件大小: 0K
描述: IC UART/TXRX RS485 40QFN
标准包装: 3,000
特点: *
通道数: 1,UART
FIFO's: 64 字节
规程: RS485
电源电压: 3.3V,5V
带自动流量控制功能:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 40-VFQFN 裸露焊盘
供应商设备封装: 40-QFN 裸露焊盘(6x6)
包装: 带卷 (TR)
XR19L400
15
REV. 1.0.3
SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
trigger level minus the hysteresis value (for Trigger Table D). These hysteresis values are shown in Table 11.
Table 4 below explains this when Trigger Table-B (See Table 12) is selected.
TABLE 4: AUTO XON/XOFF (SOFTWARE) FLOW CONTROL
RX TRIGGER LEVEL
INT PIN ACTIVATION
XOFF CHARACTER(S) SENT
(CHARACTERS IN RX FIFO)
XON CHARACTER(S) SENT
(CHARACTERS IN RX FIFO)
8
8*
0
16
16*
8
24
24*
16
28
28*
24
* After the trigger level is reached, an xoff character is sent after a short span of time (= time required to send 2 characters);
for example, after 2.083ms has elapsed for 9600 baud and 8-bit word length, no parity and 1 stop bit setting.
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