REV. 1.0.3 TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER and control registers (MSR/MCR), programmable data rate (clock) diviso" />
參數(shù)資料
型號(hào)： XR19L402IL48-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 49/49頁(yè)
文件大小： 0K
描述： IC UART/TXRX RS485 48QFN
標(biāo)準(zhǔn)包裝： 260
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 64 字節(jié)
規(guī)程： RS485
電源電壓： 3.3V，5V
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(cè)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-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 48-QFN-EP（7x7）
包裝： 托盤(pán)
XR19L402
9
REV. 1.0.3
TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
and control registers (MSR/MCR), programmable data rate (clock) divisor registers (DLL/DLM), and an user
accessible Scratchpad register (SPR).
Beyond the general 16C550 features and capabilities, the L402 offers enhanced feature registers, namely,
EFR, Xon/Xoff 1, Xon/Xoff 2, FCTR, TRG, EMSR and FC that provide Xon/Xoff software flow control, FIFO
trigger level control and FIFO level counters. All the register functions are discussed in full detail later in
2.7
INT (IRQ#) Output
The interrupt output changes according to the operating mode and enhanced features setup. Table 3 and
Table 4 below summarize the operating behavior for the transmitter and receiver in the Intel and Motorola
modes. Also see Figures 19 through 22.
TABLE 3: INT (IRQ#) PIN OPERATION FOR TRANSMITTER
FCR BIT-0 = 0 (FIFO DISABLED)
FCR BIT-0 = 1 (FIFO ENABLED)
INT Pin
(I/M# = 1)
0 = one byte in THR
1 = THR empty
0 = FIFO above trigger level
1 = FIFO below trigger level or FIFO empty
IRQ# Pin
(I/M# = 0)
1 = one byte in THR
0 = THR empty
1 = FIFO above trigger level
0 = FIFO below trigger level or FIFO empty
TABLE 4: INT (IRQ#) PIN OPERATION FOR RECEIVER
FCR BIT-0 = 0
(FIFO DISABLED)
FCR BIT-0 = 1
(FIFO ENABLED)
INT Pin
(I/M# = 1)
0 = no data
1 = 1 byte
0 = FIFO below trigger level
1 = FIFO above trigger level
IRQ# Pin
(I/M# = 0)
1 = no data
0 = 1 byte
1 = FIFO below trigger level
0 = FIFO above trigger level
2.8
Crystal or External Clock Input
The L402 includes an on-chip oscillator (XTAL1 and XTAL2) to generate a clock when a crystal is connected
between the XTAL1 and XTAL2 pins of the device. Alternatively, an external clock can be supplied through the
XTAL1 pin. The CPU data bus does not require this clock for bus operation. The crystal oscillator provides a
system clock to the Baud Rate Generators (BRG) section found in each of the UART. XTAL1 is the input to the
oscillator or external clock input and XTAL2 pin is the bufferred output which can be used as a clock signal for
other devices in the system. Please note that the input XTAL1 is not 5V tolerant and therefore, the maximum
相關(guān)PDF資料
PDF描述
XR20M1170IL24TR-F IC UART FIFO I2C/SPI 64B 24QFN
XR20M1172IG28-F IC UART FIFO I2C/SPI 64B 28TSSOP
XR20M1280IL40-F IC UART I2C/SPI 128 BYTE 40QFN
XR20V2170IL40-F IC UART/TXRX I2C/SPI RS232 40QFN
XR20V2172IL64-F IC UART/TXRX I2C/SPI RS232 64QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR1AEX2NV1XX 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPST, 18A, 125VAC, BLACK, Contact Configuration:SPST, Switch Ope 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPST, 18A, 125VAC, BLACK, Contact Configuration:SPST, Switch Operation:Off-On, Contact Current Max:18A, Contact Voltage AC Nom:125V, Switch Mounting:Panel, Actuator / Cap Color:Red, Illumination Color:Red , RoHS Compliant: Yes
XR1AEX3NV1XX 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPST, 18A, 125VAC, BLACK, Contact Configuration:SPST, Switch Ope
XR1AEX4NV1XX 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPST, 18A, 125VAC, BLACK, Contact Configuration:SPST, Switch Operation:Off-On, Contact Current Max:18A, Contact Voltage AC Nom:125V, Switch Mounting:Panel, Actuator / Cap Color:Amber, Illumination Color:Amber , RoHS Compliant: Yes
XR1BG33NV1XX 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPDT, 18A, 125VAC, BLACK, Contact Configuration:SPDT, Switch Ope
XR1BG44NV1XX 制造商:Eaton Corporation 功能描述:SWITCH, ROCKER, SPDT, 18A, 125VAC, BLACK, Contact Configuration:SPDT, Switch Operation:On-Off-On, Contact Current Max:18A, Contact Voltage AC Nom:125V, Switch Mounting:Panel, Actuator / Cap Color:Amber, Illumination Color:Amber , RoHS Compliant: Yes
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*