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UPD8279-5 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE - NEC

भाग संख्या UPD8279-5
समारोह PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE
मैन्युफैक्चरर्स NEC 
लोगो NEC लोगो 
पूर्व दर्शन
1 Page
		
<?=UPD8279-5?> डेटा पत्रक पीडीएफ

UPD8279-5 pdf
fLPD8279.S
The /.lPD8279-5 has two basic functions: 1) to control displays to output and 2) to
control a keyboard for input. Its specific purpose is to unburden the host processor
from monitoring keys and refreshing displays. The /.lPD8279-5 is designed to directly
interface the microprocessor bus. The microprocessor must program the operating
mode to the /.lPD8279-5, these modes are as follows:
Output Modes
• 8 or 16 Character Display
• Right or Left Entry
Input Modes
• Scanned Keyboard with Encoded 8 x 8 x 4 Key Format or Decoded 4 x 8 x 8
Scan Lines.
• Scanned Sensor Matrix with Encoded 8 x 8 or Decoded 4 x 8 Scan Lines.
• Strobed Input.
FUNCTIONAL
DESCRIPTION
BLOCK DIAGRAM
elK RESET 080_7
IRO
OUT AO_3 OUT 80-3
SLO_J
CNTLlSTB
Operating Temperature
...... OOC to +70°C
Storage Temperature ......... .
. _65°C to +125°C
All Output Vol tages .. .
. . . . . . . . . . . . . . . . . . .. -0.5 to +7 Volts<D
All Input Voltages. : . . . . . . . . . .
-0.5 to +7 Voits<D
Supply Voltages .... .
-0.5 to +7 Volts<D
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
CDNote: With respect to VSS
CO'MMENT: Stress above those listed under "Absolute Maximum Ratings" may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections of this spe~ifjcation is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
ABSOLUTE MAXIMUM
RATINGS'
660

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डाउनलोड[ UPD8279-5 Datasheet.PDF ]


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अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
UPD8279-5PROGRAMMABLE KEYBOARD/DISPLAY INTERFACENEC
NEC


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