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ST16C452PS

更新时间： 2024-01-05 00:49:36
品牌 Logo 应用领域
艾科嘉 - EXAR /
页数 文件大小 规格书
30页 164K
描述
DUAL UART WITH PARALLEL PRINTER PORT

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中文翻译

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ST16C452PS 数据手册

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ST16C452  
ST16C452PS  
DUAL UART WITH PARALLEL  
PRINTER PORT  
March2004  
DESCRIPTION  
The ST16C452/ST16C452PS (452/452PS) is a dual universal asynchronous receiver and transmitter (UART)  
with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer. The parallel  
port is designed such that the user can configure it as general purpose I/O interface, or for connection to other  
printer devices. The 452/452PS provides enhanced UART functions, a modem control interface, and data rates  
upto1.5Mbps. Onboardstatusregistersprovidetheuserwitherrorindicationsandoperationalstatus. Thesystem  
interrupts and control may be tailored to meet user requirements. An internal loop-back capability allows onboard  
diagnostics. A programmable baud rate generator is provided to select transmit and receive clock rates from 50  
bps to 1.5 Mbps. The 452/452PS is available in a 68 pin PLCC package. The 452/452PS is compatible with the  
16C450. The 452 is available in two versions, the ST16C452 and the ST16C452PS. The ST16C452 provides  
single hardware pin to control the printer port data direction while the 452PS provides an additionally software  
control bit to control the printer port data direction to become compatible PS/2 operating system.  
The 452/452PS is fabricated in an advanced CMOS process with low power consumption.  
PLCC Package  
FEATURES  
Addedfeaturesindeviceswithtopmarkdatecodeof  
"F2 YYWW" and newer:  
TXB 10  
60  
59  
58  
57  
56  
55  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
44  
INTB  
-DTRB 11  
INTP  
• 5VTolerantInputs  
• Pin to pin and functional compatible to TL16C452  
• 2.97 to 5.5 volt operation  
• SoftwarecompatiblewithST16C450,NS16C450  
• 1.5Mbpstransmit/receiveoperation(24MHz)  
• Independent transmitandreceivecontrol  
• Modem and printer status registers  
• UARTportandprinterportBi-directional  
• Printer port direction set by single control bit or 8 bit  
pattern (AA/55)  
• Modem control signals (-CTS, -RTS, -DSR, -DTR,  
-RI, -CD)  
• Programmable character lengths (5, 6, 7, 8)  
• Even, odd, ornoparitybitgenerationanddetection  
• Internal loop-back diagnostics  
12  
13  
-RTSB  
-CTSB  
-SLCTIN  
INIT  
D0 14  
D1 15  
D2 16  
-AUTOFDXT  
-STROBE  
GND  
17  
18  
D3  
D4  
PD0  
ST16C452CJ68  
ST16C452CJ68PS  
PD1  
D5 19  
D6 20  
D7 21  
PD2  
PD3  
PD4  
22  
23  
24  
N.C.  
VCC  
PD5  
PD6  
PD7  
-RTSA  
-DTRA 25  
TXA 26  
INTA  
RDOUT  
• TTL compatible inputs, outputs  
• LowPower  
ORDERING INFORMATION  
Part number  
Package  
Operating temperature Device Status  
ST16C452CJ68  
ST16C452CJ68PS  
ST16C452IJ68  
ST16C452IJ68PS  
68-Lead PLCC  
68-Lead PLCC  
68-Lead PLCC  
68-Lead PLCC  
0° C to + 70° C  
0° C to + 70° C  
-40° C to + 85° C  
-40° C to + 85° C  
Active  
Active  
Active  
Active  
Rev.3.20  
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017  
1234567...30

中文翻译

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