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參數資料
| 型號： | ST78C34IP40 |
| 廠商： | EXAR CORP |
| 元件分類： | Parallel IO Port |
| 英文描述： | 8 I/O, PIA-PRINTER INTERFACE, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 208K |
| 代理商： | ST78C34IP40 |
ST78C34 -General Purpose Parallel Printer Port with 83-Byte FIFO
Support
Design
ST78C34
General Purpose Parallel Printer Port with 83-Byte FIFO
Features
q
83 bytes of printer output FIFO
q
Bi-directional software parallel port
q
Bi-directional I/O ports
q
Register compatible to IBM XT, AT, compatible 386, 486
q
Selectable interrupt polarity
q
Selectable FIFO interrupts
q
Pb-Free, RoHS Compliant Versions Offered
Applications
q
Printers
Description
The ST78C34 is a monolithic Bidirectional Parallel port designed to
operate as a general purpose I/O port. It contains all the necessary
input/output signals to be configured as a CENTRONICS printer port.
The ST78C34 is a general purpose input/output con-troller with 83 byte
internal FIFO. FIFO operation can be enabled or disabled. For
CENTRONICS printer operation, all registers are mapped to IBM printer
port registers.
The ST78C34 is designed to operate as normal printer interface without
any additional settings. Contents of the FIFO will be cleared after reset
or setting the INIT pin to a low state. The auto FIFO operation starts
after the first -ACK is received from the printer. Contents of the FIFO
transfer to the printer at the printer loading speed.
For UART technical support, please email Exar's UART Technical
Part Number
Pkg
Code
RoHS
Min
Temp.
(°C)
Max
Temp.
(°C)
Status
Buy
Now
Order
Samples
Specifications
CH
n/a
CPUInterface
Intel
Data Rate@5/3.3/2.5V No
Tx/RxFIFO(Bytes)
No
Tx/RxFIFOCtrs
No
Tx/RxFIFOINT Trig
No
AutoRTS/CTS
No
IrDaSup
No
5VTolInputs
No
Sup V
5
Pkgs
PDIP-40,
PLCC-44
Documents
Datasheets
Schematics
Evaluation Board Manuals
http://www.exar.com/Common/Content/ProductDetails.aspx?ID=ST78C34 (1 of 2) [31-Jul-09 11:35:58 AM]
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