參數(shù)資料
型號(hào)： ST68C454
廠商： Exar Corporation
英文描述： QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
中文描述： 四通用異步接收/發(fā)送器（UART）
文件頁數(shù)： 10/30頁
文件大?。?/td> 378K
代理商： ST68C454
ST16C454/68C454
10
Rev. 3.20
Internal Registers
The 454 provides 12 internal registers for monitoring
and control. These resisters are shown in Table 4
below. These registers are similar to those already
available in the standard 16C450. These registers
function as data holding registers (THR/RHR), inter-
Table 4, INTERNAL REGISTER DECODE
A2
A1
A0
READ MODE
WRITE MODE
General Register Set (THR/RHR, IER/ISR, MCR/MSR, LCR/LSR, SPR):
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Receive Holding Register
Transmit Holding Register
Interrupt Enable Register
Interrupt Status Register
Line Control Register
Modem Control Register
Line Status Register
Modem Status Register
Scratchpad Register
Scratchpad Register
Baud Rate Register Set (DLL/DLM): Note *2
0
0
0
0
0
1
LSB of Divisor Latch
MSB of Divisor Latch
LSB of Divisor Latch
MSB of Divisor Latch
Note *2: These registers are accessible only when LCR bit-7 is set to a logic 1.
rupt status and control registers (IER/ISR), line status
and control registers (LCR/LSR), modem status and
control registers (MCR/MSR), programmable data
rate (clock) control registers (DLL/DLM), and a user
assessable scratchpad register (SPR). Register func-
tions are more fully described in the following para-
graphs.
相關(guān)PDF資料
PDF描述
ST16C550CQ48 UART WITH 16-BYTE FIFO’s
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ST16C550IQ48 UART WITH 16-BYTE FIFO’s
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ST16C550CP40 Voltage Regulator IC; Output Current:350mA; Output Voltage:1.8V; Package/Case:8-TSSOP; Supply Voltage Max:6V; Current Rating:350mA; Leaded Process Compatible:No; Output Current Max:350mA; Output Voltage Max:1.8V
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST68C554 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD UART WITH 16-BYTE FIFOS
ST68C554CJ68 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
ST68C554CJ68-F 功能描述:UART 接口集成電路 SIGNALS 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
ST68C554IJ68 制造商:Exar Corporation 功能描述:
ST68C554IJ68-F 功能描述:UART 接口集成電路 SIGNALS 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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