參數(shù)資料
型號(hào)： ST16C552CJ68
廠商： EXAR CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： Voltage Regulator IC; Package/Case:8-TSSOP; Output Current:350mA; Output Voltage:2.5V; Supply Voltage Max:6V; Current Rating:350mA; Leaded Process Compatible:No; Output Current Max:350mA; Output Voltage Max:2.5V RoHS Compliant: No
中文描述： 2 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQCC68
封裝： PLASTIC, LCC-68
文件頁(yè)數(shù)： 20/39頁(yè)
文件大?。?/td> 222K
代理商： ST16C552CJ68
20
ST16C552/552A
Rev. 3.40
FCR BIT 4-5:
Not Used - initialized to a logic 0.
FCR BIT 6-7: (logic 0 or cleared is the default condi-
tion, RX trigger level = 1)
These bits are used to set the trigger level for the
receive FIFO interrupt.
An interrupt is generated when the number of charac-
ters in the FIFO equals the programmed trigger level.
However the FIFO will continue to be loaded until it is
full.
BIT-7
BIT-6
RX FIFO trigger level
0
0
1
1
0
1
0
1
01
04
08
14
Interrupt Status Register (ISR)
The 552/552A provides four levels of prioritized inter-
rupts 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 provide the user with the highest pending
interrupt level to be serviced. No other interrupts are
acknowledged until the pending interrupt is serviced.
Whenever the interrupt status register is read, the
interrupt status is cleared. However it should be noted
that only the current pending interrupt is cleared by the
read. A lower level interrupt may be seen after reread-
ing the interrupt status bits. The Interrupt Source
Table 8 (below) shows the data values (bits 0-3) for the
four prioritized interrupt levels and the interrupt
sources associated with each of these interrupt levels:
Table 8, INTERRUPT SOURCE TABLE
Priority
Level
[ISR BITS]
Bit-3 Bit-2 Bit-1 Bit-0
Source of the interrupt
1
2
2
3
4
0
0
1
0
0
1
1
1
0
0
1
0
0
1
0
0
0
0
0
0
LSR (Receiver Line Status Register)
RXRDY (Received Data Ready)
RXRDY (Receive Data time out)
TXRDY (Transmitter Holding Register Empty)
MSR (Modem Status Register)
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ST16C552ACJ68 DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C552CJ68-F 功能描述:UART 接口集成電路 2.97V-5.5V 16B FIFO temp 0C to 70C; 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
ST16C552CJ68TR-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT 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
ST16C552IJ68 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
ST16C552IJ68-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT 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
ST16C552IJ68TR-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT 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
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