參數(shù)資料
型號(hào)： ST16C580IQ48
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： UART WITH 16-BYTE FIFO’s AND INFRARED (IrDA) ENCODER/DECODER
中文描述： 1 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQFP48
封裝： TQFP-48
文件頁數(shù)： 10/41頁
文件大?。?/td> 244K
代理商： ST16C580IQ48
ST16C580
10
Rev. 1.20
FIFO Operation
The 16 byte transmit and receive data FIFO’s are
enabled by the FIFO Control Register (FCR) bit-0.
With 16C550 devices, the user can set the receive
trigger level but not the transmit trigger level. The 580
provides independent trigger levels for both receiver
and transmitter. To remain compatible with
ST16C550, the transmit interrupt trigger level is set to
1 following a reset. It should be noted that the user can
set the transmit trigger levels by writing to the FCR
register, but activation will not take place until EFR bit-
4 is set to a logic 1. The receiver FIFO section includes
a time-out function to ensure data is delivered to the
external CPU. An interrupt is generated whenever the
Receive Holding Register (RHR) has not been read
following the loading of a character or the receive
trigger level has not been reached. (see hardware flow
control for a description of this timing).
Hardware Flow Control
When automatic hardware flow control is enabled, the
580 monitors the -CTS pin for a remote buffer overflow
indication and controls the -RTS pin for local buffer
overflows. Automatic hardware flow control is se-
lected by setting bits 6 (RTS) and 7 (CTS) of the EFR
register to a logic 1. If -CTS transitions from a logic 0
to a logic 1 indicating a flow control request, ISR bit-
5 will be set to a logic 1 (if enabled via IER bit 6-7), and
the 580 will suspend TX transmissions as soon as the
stop bit of the character in process is shifted out.
Transmission is resumed after the -CTS input returns
to a logic 0, indicating more data may be sent.
With the Auto RTS function enabled, an interrupt is
generated when the receive FIFO reaches the pro-
grammed trigger level. The -RTS pin will not be forced
to a logic 1 (RTS Off), until the receive FIFO reaches
the next trigger level
.
However, the -RTS pin will
return to a logic 0 after the data buffer (FIFO) is
unloaded to the next trigger level below the pro-
grammed trigger level. However, under the above
described conditions the 580 will continue to accept
data until the receive FIFO is full.
Selected
Trigger
Level
(characters)
INT
Pin
-RTS
Logic “1”
(characters)
-RTS
Logic “0”
(characters)
Activation
1
4
8
14
1
4
8
14
4
8
14
14
0
1
4
8
相關(guān)PDF資料
PDF描述
ST16C580CP40 Linear Voltage Regulator IC; Output Current Max:350mA; Supply Voltage Max:6V; Package/Case:8-TSSOP; Output Current:350mA; Output Voltage:3.3V; Current Rating:30.05A; Leaded Process Compatible:No; Output Voltage Max:3.3V
ST16C580CJ44 UART WITH 16-BYTE FIFO’s AND INFRARED (IrDA) ENCODER/DECODER
ST16C654CJ68 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
ST16C654CQ100 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
ST16C654 Linear Voltage Regulator IC; Output Current Max:350mA; Supply Voltage Max:6V; Package/Case:8-TSSOP; Output Current:600mA; Output Voltage:5V; Current Rating:30.05A; Leaded Process Compatible:No; Output Voltage Max:5V
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C580IQ48-F 功能描述:UART 接口集成電路 UART W/16BYTE FIFO 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
ST16C650 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO
ST16C650A 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO
ST16C650A_0508 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO
ST16C650A_09 制造商:EXAR 制造商全稱:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO
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