ST78C34CP40-F Exar Corporation, ST78C34CP40-F Datasheet
ST78C34CP40-F
Specifications of ST78C34CP40-F
Related parts for ST78C34CP40-F
ST78C34CP40-F Summary of contents
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... Bi-directional I/O ports Register compatible to IBM XT, AT, compatible 386, 486 Selectable interrupt polarity Selectable FIFO interrupts ORDERING INFORMATION Part number Pin Package Operating temperature ST78C34CJ44 44 PLCC ST78C34CP40 40 PDip ST78C34IJ44 44 PLCC ST78C34IP40 40 PDip Rev. 3.00 GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO 7 N ...
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ST78C34 Figure 1, PACKAGE DESCRIPTION, ST78C34 Plastic-DIP Package -ERROR 1 SLCT 2 BUSY 3 -ACK INTSEL N.C. 15 INT 16 ...
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Figure 2, BLOCK DIAGRAM D0-D7 -IOR -IOW RESET A0-A1 -CS INT INTSEL Rev. 3.00 ST78C34 Printer Printer FIFO Data Registers Ports Printer Control Logic Clock & Timing Generator 6-5 PD0-PD7 -STROBE INIT -AUTOFDX -SELCTIN PE, SELECT BUSY, -ACK -ERROR XTAL2 ...
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ST78C34 SYMBOL DESCRIPTION Symbol Pin Signal 40 44 -ERROR 1 1 SLCT 2 2 BUSY 3 3 -ACK INTSEL 6 8 D0-D7 14-7 16-9 INT 16 19 XTAL1 17 20 XTAL2 18 21 -CS 19 ...
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SYMBOL DESCRIPTION Symbol Pin Signal 40 44 GND 20 23 RESET 21 24 -STROBE 22 25 -AUTOFDXT 23 26 INIT 24 27 -SLCTIN 25 28 GND 26 30 PD0-PD7 27-34 31-38 A0-A1 36-37 40-41 -IOW 38 42 -IOR 39 43 ...
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ST78C34 PRINTER PORT PROGRAMMING TABLE WRITE MODE 0 0 PORT REGISTER CONTROL REGISTER 1 1 ALTERNATE FUNCTION REGISTER * Reading the status register will reset the INT output. PRINTER FUNCTIONAL DESCRIPTION The ST78C34 parallel ...
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FIFO and the counter will not incre- ment. Two interrupt modes are available and are selected with the INTSEL pin. If this pin is tied low, a latched interrupt will result. In this mode, INT will transition ...
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ST78C34 COM BIT-2: INIT input pin. 0= INIT pin is in low state 1= INIT pin is in high state COM BIT-3: -SLCTIN input pin. 0= -SLCTIN pin is in high state 1= -SLCTIN pin is in low state COM ...
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Bit-5 Bit-4 INT output STR bit Normal mode 0 1 FIFO empty 1 0 FIFO full 1 1 FIFO empty AFR BIT-6: INT output polarity. 0= Normal. INT output follows the -ACK input 1= Inverted INT output AFR ...
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ST78C34 ST78C34 REGISTER CONFIGURATIONS A1 A0 REGISTER PD7 0 1 STR BUSY/ -FIFO full 1 0 COM CON AFR FIFO enable 1 1 FBCR -FIFO status Rev. 3. ...
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AC ELECTRICAL CHARACTERISTICS T =0° - 70° C, Vcc=5.0 V ± 10% unless otherwise specified. A Symbol Parameter T Clock high pulse duration 1 T Clock low pulse duration 2 T Clock rise/fall time 3 T Chip select setup time ...
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ST78C34 ABSOLUTE MAXIMUM RATINGS Supply range Voltage at any pin Operating temperature Storage temperature Package dissipation DC ELECTRICAL CHARACTERISTICS T =0° - 70° C, Vcc=5.0 V ± 10% unless otherwise specified. A Symbol Parameter V Clock input low level ILCK ...
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A0-A2 T8 -CS T21 -IOR T26 D0-D7 A0-A2 T8 -CS T14 -IOW D0-D7 Rev. 3.00 Valid Address T9 Active T23 T24 Active T19 Data General read timing Valid Address T9 Active T15 T16 Active T12 T13 Data General write timing ...
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ST78C34 -ACK T40 -INT -IOR T40 NORMAL MODE INTSEL PD0-PD7 T2 EXTERNAL CLOCK Rev. 3.00 T39 Active Active Active INTERRUPT LATCHED MODE SELECT T41 VALID DATA Interrupt timing T1 T3 External clock timing 6-16 Active T42 Active T43 Active 7834-PR-1 ...
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RESET INIT -STROBE 0-2 CLOCK FIFO RESET DO-D7 -IOW -IOR PDO-PD7 Rev. 3.00 INIT LOW FORCES -STROBE HIGH 1-2 CLOCK Data Active Printer special mode 6-17 ST78C34 0-2 CLOCK Data Data Active Active Data 16553-PW-1 ...
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ST78C34 RESET Active D0-D7 PD0-PD7 Active -IOW -STROBE -ACK ` FIFO EMPTY Rev. 3.00 Active DATA-1 DATA-2 Active Active Active Active FIFO EMPTY FIFO mode entered after first -STROBE and -ACK -STROBE generated internally -INTP generated internally Printer auto FIFO ...
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CLOCK FIFO READ (INTERNAL) PD OUTPUT PORTS -STROBE BUSY SELECTED FOR FIFO OPERATION BUSY 2-4 CLOCK FIFO READ (INTERNAL) 5-10 CLOCKS PD OUTPUT PORTS -STROBE Printer FIFO timing with more than one byte in the FIFO Rev. 3.00 ...
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ST78C34 RESET PD PORT Active Active -IOW PD OUTPUT PORT -STROBE Printer FIFO, with one byte in the FIFO Rev. 3.00 Active Active Active Active TSD TSW 6-20 16553-PW-4 ...
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LEAD PLASTIC DUAL-IN-LINE Seating Plane L B Note: The control dimension is the inch column Package Dimensions (600 MIL PDIP) Rev. 1. INCHES MILLIMETERS SYMBOL MIN MAX MIN A 0.160 0.250 4.06 ...
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Package Dimensions 44 LEAD PLASTIC LEADED CHIP CARRIER SYMBOL A 0.165 A 0.090 1 A 0.020 2 B 0.013 B 0.026 1 C 0.008 D 0.685 D 0.650 1 ...
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... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...