參數(shù)資料
型號(hào)： ST16C2450CP40
廠商： STARTECH SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 2.97V TO 5.5V DUART
中文描述： 2 CHANNEL(S), 448K bps, SERIAL COMM CONTROLLER, PDIP40
文件頁(yè)數(shù)： 15/29頁(yè)
文件大小： 315K
代理商： ST16C2450CP40
á
REV. 4.0.0
ST16C2450
2.97V TO 5.5V DUART
15
4.4.1
LSR is by any of the LSR bits 1, 2, 3 and 4.
RXRDY is by data byte received in RHR.
TXRDY is by THR empty.
MSR is by any of the MSR bits 0, 1, 2 and 3.
4.4.2
Interrupt Clearing:
LSR interrupt is cleared by a read to the LSR register.
RXRDY interrupt is cleared by reading data out of RHR.
TXRDY interrupt is cleared by a read to the ISR register or writing to THR.
MSR interrupt is cleared by a read to the MSR register.
Interrupt Generation:
]
ISR[0]: Interrupt Status
Logic 0 = An interrupt is pending and the ISR contents may be used as a pointer to the appropriate interrupt
service routine.
Logic 1 = No interrupt pending (default condition).
ISR[3:1]: Interrupt Status
These bits indicate the source for a pending interrupt at interrupt priority levels (See
Table 6
).
ISR[7:4]: Reserved
4.5
Line Control Register (LCR) - Read/Write
The Line Control Register is used to specify the asynchronous data communication format. The word or
character length, the number of stop bits, and the parity are selected by writing the appropriate bits in this
register.
LCR[1:0]: TX and RX Word Length Select
These two bits specify the word length to be transmitted or received.
T
ABLE
6: I
NTERRUPT
S
OURCE
AND
P
RIORITY
L
EVEL
P
RIORITY
L
EVEL
ISR R
EGISTER
S
TATUS
B
ITS
S
OURCE
OF
INTERRUPT
B
IT
-3
B
IT
-2
B
IT
-1
B
IT
-0
1
0
1
1
0
LSR (Receiver Line Status Register)
2
0
1
0
0
RXRDY (Received Data Ready)
3
0
0
1
0
TXRDY (Transmit Ready)
4
0
0
0
0
MSR (Modem Status Register)
-
0
0
0
1
None (default)
BIT-1
BIT-0
W
ORD
LENGTH
0
0
5 (default)
0
1
6
1
0
7
1
1
8
相關(guān)PDF資料
PDF描述
ST16C2450CQ48 2.97V TO 5.5V DUART
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C2450CP40-F 功能描述:UART 接口集成電路 DUAL 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
ST16C2450CQ-0A-EB 功能描述:界面開(kāi)發(fā)工具 Supports C2450 48 ld TQFP, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
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