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參數(shù)資料
| 型號： | ST16C650ACQ48-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 11/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 32B 48TQFP |
| 標準包裝： | 250 |
| 特點： | * |
| 通道數(shù)： | 1，UART |
| FIFO's： | 32 字節(jié) |
| 規(guī)程： | 打印機，RS232，RS422，RS485 |
| 電源電壓： | 2.9 V ~ 5.5 V |
| 帶并行端口： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 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 |
| 供應商設(shè)備封裝： | 48-TQFP（7x7） |
| 包裝： | 托盤 |
| 其它名稱： | 1016-1662 ST16C650ACQ48-F-ND |
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ST16C650A
19
REV. 5.0.3
2.90V TO 5.5V UART WITH 32-BYTE FIFO
2.16
Infrared Mode
The 650A UART includes the infrared encoder and decoder compatible to the IrDA (Infrared Data Association)
version 1.0. The infrared mode can be enabled by setting MCR bit-6 to a ‘1’. In the infrared mode, the user can
choose to send/receive data either half-duplex or full-duplex. The half-duplex mode is chosen by setting bit-0 of
XFR register to a ‘1’. This prevents echoed data from reaching the receiver. When the infrared feature is
enabled, the transmit data outputs, TX, idles at logic zero level. Likewise, the RX input assumes an idle level of
logic zero, see Figure 13.
The IrDA standard defines the infrared encoder sends out a 3/16 of a bit wide HIGH-pulse for each “0” bit in the
transmit data stream. This signal encoding reduces the on-time of the infrared LED, hence reduces the power
consumption. See Figure 13 below. The 650A has an additional feature to allow user to vary the transmit pulse
width further reducing power consumption of the system where application permits (see IRPW register for
details).
The wireless infrared decoder receives the input pulse from the infrared sensing diode on RX pin. Each time it
senses a light pulse, it returns a logic 0 to the data bit stream. The 650A also includes another feature -
inversion of the IR pulse (XFR register bit-1), where a LOW IR pulse in the receive data stream is recognized
as a ’0’ bit.
FIGURE 13. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
Character
Data Bits
Start
Stop
00
0
11
1 11
Bit Time
1/16 Clock Delay
IRdecoder-
RX Data
Receive
IR Pulse
(RX pin)
Character
Data Bits
Sta
rt
Stop
00
0
11
1
TX Data
Transmit
IR Pulse
(TX Pin)
Bit Time
1/2 Bit Time
3/16 Bit Time
IrEncoder-1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C650ACQ48TR-F | 制造商:Exar Corporation 功能描述:UART 1-CH 32Byte FIFO 3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:ST16C650ACQ48TR-F |
| ST16C650AIJ44 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO |
| ST16C650AIJ44-F | 功能描述:UART 接口集成電路 UART W/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 |
| ST16C650AIP40 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO |
| ST16C650AIQ48 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:UART, 48 Pin, Plastic, TQFP |
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