參數(shù)資料
型號(hào)： ST16C452IJ68
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： DUAL UART WITH PARALLEL PRINTER PORT
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)： 14/30頁(yè)
文件大?。?/td> 162K
代理商： ST16C452IJ68
14
ST16C452/452PS
Rev. 3.20
A2 A1 A0
Register
[Default]
Note 5*
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
Printer Port Register Set: Note 3*
[X]
0
0
PR[00]
bit-7
bit-6
bit-5
bit-4
bit-3
bit-2
bit-1
bit-0
[X]
0
0
PR[00]
bit-7
bit-6
bit-5
bit-4
bit-3
bit-2
bit-1
bit-0
[X]
0
1
SR[4F]
-Busy
-ACK
PE
SLCT
Error
State
-IRQ
logic
“1”
logic
“1”
[X]
0
1
IOSEL
bit-7
bit-6
bit-5
bit-4
bit-3
bit-2
bit-1
bit-0
[X]
1
0
COM[E0]
logic
“1”
logic
“1”
logic
“1”
-INTP
Enable
-SLCTIN
INIT
-Auto
FDXT
-STROBE
[X]
1
0
CON[00]
[X]
[X]
PD 0-7
IN/OUT
-INTP
Enable
-SLCTIN
INIT
-Auto
FDXT
-STROBE
Note 1* The General Register set is accessible only when CS A or CS B is a logic 0.
Note 2* The Baud Rate register set is accessible only when CS A or CS B is a logic 0 and LCR bit-7 is a logic 1.
Note 3*: Printer Port Register set is accessible only when -CSP is a logic 0 in conjunction with the states of the
interface signal BIDEN and Printer Control Register bit-5 or IOSEL register.
Note 5*
The value between the square brackets represents the register’s initialized HEX value, X = N/A.
UART REGISTER DESCRIPTIONS
Transmit (THR) and Receive (RHR) Holding Reg-
isters
The serial transmitter section consists of an 8-bit
Transmit Hold Register (THR) and Transmit Shift
Register (TSR). The status of the THR is provided in
the Line Status Register (LSR). Writing to the THR
transfers the contents of the data bus (D7-D0) to the
THR, providing that the THR or TSR is empty. The
THR empty flag in the LSR register will be set to a logic
1 when the transmitter is empty or when data is
transferred to the TSR. Note that a write operation can
be performed when the transmit holding register
empty flag is set (logic 0 = Buffer full).
The serial receive section also contains an 8-bit
Receive Holding Register, RHR. Receive data is
removed from the 452/452PS by reading the RHR
register. The receive section provides a mechanism to
prevent false starts. On the falling edge of a start or
false start bit, an internal receiver counter starts
counting clocks at the 16x clock rate. After 7 1/2 clocks
the start bit time should be shifted to the center of the
start bit. At this time the start bit is sampled and if it is
still a logic 0 it is validated. Evaluating the start bit in
this manner prevents the receiver from assembling a
false character. Receiver status codes will be posted
in the LSR.
相關(guān)PDF資料
PDF描述
ST16C452IJ68PS DUAL UART WITH PARALLEL PRINTER PORT
ST16C452CJ68 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
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(jī)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(jī)端口）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C452IJ68-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
ST16C452IJ68PS 制造商:EXAR 制造商全稱:EXAR 功能描述:DUAL UART WITH PARALLEL PRINTER PORT
ST16C452IJ68PS-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
ST16C452IJ68TR-F 制造商:Exar Corporation 功能描述:UART 2-CH 3.3V/5V 68-Pin PLCC T/R 制造商:Exar Corporation 功能描述:ST16C452IJ68TR-F
ST16C452PS 制造商:EXAR 制造商全稱:EXAR 功能描述:DUAL UART WITH PARALLEL PRINTER PORT
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