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參數資料
| 型號： | ST16C552A |
| 廠商： | Exar Corporation |
| 英文描述： | 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）) |
| 中文描述： | 雙UART），16字節(jié)FIFO和并行打印機端口（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） |
| 文件頁數： | 21/40頁 |
| 文件大?。?/td> | 463K |
| 代理商： | ST16C552A |
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21
ST16C552/552A
Rev. 3.30
ISR BIT-0:
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. (normal default condi-
tion)
ISR BIT 1-3: (logic 0 or cleared is the default condition)
These bits indicate the source for a pending interrupt
at interrupt priority levels 1, 2, and 3 (See Interrupt
Source Table).
ISR BIT 4-5: (logic 0 or cleared is the default condition)
Not Used - initialized to a logic 0.
ISR BIT 6-7: (logic 0 or cleared is the default condition)
These bits are set to a logic 0 when the FIFOs are not
being used in the 16C450 mode. They are set to a logic
1 when the FIFOs are enabled in the 16C552/552A
mode.
Line Control Register (LCR)
The Line Control Register is used to specify the
asynchronous data communication format. The word
length, the number of stop bits, and the parity are
selected by writing the appropriate bits in this register.
LCR BIT 0-1: (logic 0 or cleared is the default condi-
tion)
These two bits specify the word length to be transmit-
ted or received.
BIT-1
BIT-0
Word length
0
0
1
1
0
1
0
1
5
6
7
8
LCR BIT-2: (logic 0 or cleared is the default condition)
The length of stop bit is specified by this bit in
conjunction with the programmed word length.
BIT-2
Word length
Stop bit
length
(Bit time(s))
0
1
1
5,6,7,8
5
6,7,8
1
1-1/2
2
LCR BIT-3:
Parity or no parity can be selected via this bit.
Logic 0 = No parity. (normal default condition)
Logic 1 = A parity bit is generated during the transmis-
sion, receiver checks the data and parity for transmis-
sion errors.
LCR BIT-4:
If the parity bit is enabled with LCR bit-3 set to a logic
1, LCR BIT-4 selects the even or odd parity format.
Logic 0 = ODD Parity is generated by forcing an odd
number of logic 1s in the transmitted data. The
receiver must be programmed to check the same
format. (normal default condition)
Logic 1 = EVEN Parity
is generated by forcing an even
the number of logic 1s in the transmitted. The receiver
must be programmed to check the same format.
LCR BIT-5:
If the parity bit is enabled, LCR BIT-5 selects the
forced parity format.
LCR BIT-5 = logic 0, parity is not forced. (normal
default condition)
LCR BIT-5 = logic 1 and LCR BIT-4 = logic 0, parity bit
is forced to a logical 1 for the transmit and receive
data.
LCR BIT-5 = logic 1 and LCR BIT-4 = logic 1, parity bit
is forced to a logical 0 for the transmit and receive
data.
相關PDF資料 |
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| ST16C554DCJ68 | QUAD UART WITH 16-BYTE FIFOS |
| ST68C554 | QUAD UART WITH 16-BYTE FIFOS |
| ST16C554DIJ68 | Plug-In Relay; Contacts:DPDT; Contact Carry Current:15A; Coil Voltage AC Max:120V; Relay Mounting:Plug-In; Relay Terminals:Quick Connect; Coil Resistance:4430ohm RoHS Compliant: Yes |
| ST16C554DIQ64 | QUAD UART WITH 16-BYTE FIFOS |
| ST16C554CQ64 | Linear Voltage Regulator IC; Output Current Max:350mA; Supply Voltage Max:6V; Package/Case:8-TSSOP; Current Rating:350mA; Leaded Process Compatible:No; Output Voltage Max:2.8V; Peak Reflow Compatible (260 C):No |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ST16C552ACJ68 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C552ACJ68-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 通道數量:2 數據速率: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 |
| ST16C552ACJ68TR-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 通道數量:2 數據速率: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 |
| ST16C552AIJ68 | 制造商:EXAR 制造商全稱:EXAR 功能描述:DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT |
| ST16C552AIJ68-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 通道數量:2 數據速率: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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