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參數(shù)資料
| 型號： | ST16C452CJ68 |
| 廠商： | EXAR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Power Supply IC; Number of Outputs:1; Supply Voltage Max:5.5V; Package/Case:10-MSOP; Leaded Process Compatible:No; Output Current:150mA; Output Voltage Max:1.3V; Peak Reflow Compatible (260 C):No; Power Dissipation:481mW |
| 中文描述： | 2 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQCC68 |
| 封裝： | PLASTIC, LCC-68 |
| 文件頁數(shù)： | 18/30頁 |
| 文件大?。?/td> | 162K |
| 代理商： | ST16C452CJ68 |
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18
ST16C452/452PS
Rev. 3.20
LSR BIT-3:
Logic 0 = No framing error. (normal default condition)
Logic 1 = Framing error. The receive character did not
have a valid stop bit(s).
LSR BIT-4:
Logic 0 = No break condition. (normal default condi-
tion)
Logic 1 = The receiver received a break signal (RX
was a logic 0 for one character frame time).
LSR BIT-5:
This bit indicates that the 452/452PS is ready to
accept new characters for transmission. This bit
causes the 452/452PS to issue an interrupt to the CPU
when the transmit holding register is empty and the
interrupt enable is set.
Logic 0 = Transmit holding register is not empty.
(normal default condition)
Logic 1 = Transmit holding register is empty. When
this bit is a logic 1, the CPU can load new character
into the Transmit Holding Register for transmission.
LSR BIT-6:
Logic 0 = Transmitter holding and shift registers are
full.
Logic 1 = Transmitter holding and shift registers are
empty (normal default condition).
LSR BIT-7:
Not Used - initialized to a logic 0.
Modem Status Register (MSR)
This register provides the current state of the control
interface signals from the modem, or other peripheral
device that the 452/452PS is connected to. Four bits
of this register are used to indicate the changed
information. These bits are set to a logic 1 whenever
a control input from the modem changes state. These
bits are set to a logic 0 whenever the CPU reads this
register.
MSR BIT-0:
Logic 0 = No -CTS Change (normal default condition)
Logic 1 = The -CTS input to the 452/452PS has
changed state since the last time it was read. A modem
Status Interrupt will be generated.
MSR BIT-1:
Logic 0 = No -DSR Change. (normal default condition)
Logic 1 = The -DSR input to the 452/452PS has
changed state since the last time it was read. A
modem Status Interrupt will be generated.
MSR BIT-2:
Logic 0 = No -RI Change. (normal default condition)
Logic 1 = The -RI input to the 452/452PS has changed
from a logic 0 to a logic 1. A modem Status Interrupt
will be generated.
MSR BIT-3:
Logic 0 = No -CD Change. (normal default condition)
Logic 1 = Indicates that the -CD input to the has
changed state since the last time it was read. A
modem Status Interrupt will be generated.
MSR BIT-4:
Normally MSR bit-4 bit is the compliment of the -CTS
input. However in the loop-back mode, this bit is
equivalent to the RTS bit in the MCR register.
MSR BIT-5:
DSR (active high, logical 1). Normally this bit is the
compliment of the -DSR input. In the loop-back mode,
this bit is equivalent to the DTR bit in the MCR register.
MSR BIT-6:
RI (active high, logical 1). Normally this bit is the
compliment of the -RI input. In the loop-back mode
this bit is equivalent to MCR bit-2 in the MCR register.
MSR BIT-7:
CD (active high, logical 1). Normally this bit is the
compliment of the -CD input. In the loop-back mode
this bit is equivalent to MCR bit-3 in the MCR register.
Note: Whenever any MSR bit 0-3: is set to logic “1”, a
MODEM Status Interrupt will be generated.
相關PDF資料 |
PDF描述 |
|---|---|
| ST16C452CJ68PS | Power Supply IC; Number of Outputs:1; Supply Voltage Max:5.5V; Package/Case:10-MSOP; Leaded Process Compatible:No; Output Current:150mA; Output Voltage Max:1.3V; Peak Reflow Compatible (260 C):No; Power Dissipation:481mW |
| ST16C452PS | Dual UART with Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶并行打印機端口）) |
| ST16C452 | Dual UART with Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶并行打印機端口）) |
| ST16C550 | UART with 16-Byte FIFO(通用異步接收器/發(fā)送器（帶16字節(jié)的先進先出）) |
| ST16C552 | Dual UART with 16-Byte FIFO and Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶16字節(jié)的先進先出和并行打印機端口）) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C452CJ68-F | 功能描述:UART 接口集成電路 DUAL UART W/PARALEL PRINTER PORT 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 |
| ST16C452CJ68PS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C452CJ68PS-F | 功能描述:UART 接口集成電路 DUAL UART W/PARALEL PRINTER PORT 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 |
| ST16C452CJ68TR-F | 功能描述:UART 接口集成電路 DUAL UART W/PARALEL PRINTER PORT 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 |
| ST16C452IJ68 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
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