- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1969 > ST16C2450CJ44-F (Exar Corporation)IC DUART 44PLCC PDF資料下載
參數(shù)資料
| 型號： | ST16C2450CJ44-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 5/30頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DUART 44PLCC |
| 標(biāo)準(zhǔn)包裝： | 27 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 1 字節(jié) |
| 規(guī)程： | RS232 |
| 電源電壓： | 2.97 V ~ 5.5 V |
| 帶故障啟動位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 44-PLCC（16.59x16.59） |
| 包裝： | 管件 |
| 其它名稱： | 1016-1253 |
第1頁第2頁第3頁第4頁當(dāng)前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
xr
ST16C2450
REV. 4.0.1
2.97V TO 5.5V DUART
13
4.3.1
Interrupt Mode Operation
When the receive interrupt (IER BIT-0 = 1) is enabled, the RHR interrupt (see ISR bit-2) status will reflect the
following:
A. The receive data available interrupts are issued to the host when there is a character in the RHR. It will be
cleared when the character has been read out of the RHR.
B. The receive data ready bit (LSR BIT-0) is set as soon as a character is transferred from the shift register to
the receive FIFO. It is reset when the RHR is empty.
4.3.2
Polled Mode Operation
Since the receiver and transmitter have separate bits in the LSR either or both can be used in the polled mode
by selecting respective transmit or receive control bit(s).
A. LSR BIT-0 indicates there is data in the RHR.
B. LSR BIT-1 indicates an overrun error has occurred and that data in the RHR may not be valid.
C. LSR BIT 2-4 provides the type of receive data errors encountered for the data byte in RHR, if any.
D. LSR BIT-5 indicates THR is empty.
E. LSR BIT-6 indicates when both the THR and TSR are empty.
IER[0]: RHR Interrupt Enable
The receive data ready interrupt will be issued when RHR has a data character.
Logic 0 = Disable the receive data ready interrupt (default).
Logic 1 = Enable the receiver data ready interrupt.
IER[1]: THR Interrupt Enable
This bit enables the Transmit Ready interrupt which is issued whenever the Transmit FIFO becomes empty. If
the Transmit FIFO is empty when this bit is enabled, an interrupt will be generated.
Logic 0 = Disable Transmit Ready interrupt (default).
Logic 1 = Enable Transmit Ready interrupt.
IER[2]: Receive Line Status Interrupt Enable
If any of the LSR register bits 1, 2, 3 or 4 is a logic 1, it will generate an interrupt to inform the host controller
about the error status of the current data byte in FIFO.
Logic 0 = Disable the receiver line status interrupt (default).
Logic 1 = Enable the receiver line status interrupt.
IER[3]: Modem Status Interrupt Enable
Logic 0 = Disable the modem status register interrupt (default).
Logic 1 = Enable the modem status register interrupt.
IER[7:4]: Reserved
4.4
Interrupt Status Register (ISR) - Read-Only
The UART provides multiple levels of prioritized interrupts to minimize external software interaction. The
Interrupt Status Register (ISR) provides the user with four interrupt status bits. Performing a read cycle on the
ISR will give the user the current highest pending interrupt level to be serviced, others are queued up to be
serviced next. No other interrupts are acknowledged until the pending interrupt is serviced. The Interrupt
Source Table, Table 6, shows the data values (bits 0-3) for the interrupt priority levels and the interrupt sources
associated with each of these interrupt levels.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST16C2550CJ44-F | IC DUART FIFO 16B 44PLCC |
| ST16C2552IJ44TR-F | IC UART FIFO 16B DUAL 44PLCC |
| ST16C450CJ44-F | IC UART SINGLE 44PLCC |
| ST16C450CP40-F | IC INTERFACE UART |
| ST16C452IJ68-F | IC UART W/PAR PORT DUAL 68PLCC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C2450CJ44TR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C2450CJ44TR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 1Byte FIFO 3.3V/5V 44-Pin PLCC T/R 制造商:Exar Corporation 功能描述:ST16C2450CJ44TR-F |
| ST16C2450CP40 | 功能描述:UART 接口集成電路 DUAL UART 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 |
| ST16C2450CP40-F | 功能描述:UART 接口集成電路 DUAL UART 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 |
| ST16C2450CQ-0A-EB | 功能描述:界面開發(fā)工具 Supports C2450 48 ld TQFP, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。