DataSheet39.com

What is UPD8279-5?

This electronic component, produced by the manufacturer "NEC", performs the same function as "PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE".


UPD8279-5 Datasheet PDF - NEC

Part Number UPD8279-5
Description PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE
Manufacturers NEC 
Logo NEC Logo 


There is a preview and UPD8279-5 download ( pdf file ) link at the bottom of this page.





Total 9 Pages



Preview 1 page

No Preview Available ! UPD8279-5 datasheet, circuit

NEe Microcomputers, Inc.
NEe
fLPD8279·5
PROGRAMMABLE KEYBOARD/DISPLAY
INTERFACE
DESCR IPTION
The ~PD8279-5 is a programmable keyboard and display Input/Output device. It
provides the user with the ability to display data on alphanumeric segment displays
or simple indicators. The display RAM can be programmed as 16 x 8 or a dual
16 x 4 and loaded or read by the host processor. The display can be loaded with
right or left entry with an auto-increment of the display RAM address.
The keyboard interface provides a scanned signal to a 64 contact key matrix expand-
able to 128. General sensors or strobed keys may also be used_ Keystrokes are stored
in an 8 character FIFO and can be either 2 key lockout or N key rollover. Keyboard
entries generate an interrupt to the processor.
FEATURES
Programmable by Processor
• 32 HEX or 16 Alphanumeric Displays
• 64 Expandable to 128 Keyboard
• Simultaneous Keyboard and Display
• 8 Character Keyboard - FIFO
• 2 Key Lockout or N Key Rollover
• Contact Debounce
• Programmable Scan Timer
• Interrupt on Key Entry
• Single +5 'i/olt Supply, ±10%
• Fully Compatible with 8080A, 8085A, ~PD780 (ZOOTM)
• Available in 40 Pin Plastic Package
PIN CONFIGURATION
RL2
RL3
CLK
IRQ
RL4
RLS
RLS
RL7
RESET
RD
WR
DBO
DB1
DB2
DB3
DB4
DBS
DBS
DB7
VSS
~PD
8279-5
VCC
RL1
RLo
CNTL/STB
SHIFT
SL3
SL2
SL1
SLO
OUT BO
OUT B1
OUTB2
OUT B3
OUT -AO
OUTA1
OUT A2
OUT A3
So
CS
AO
PIN NAMES
OBO·7
ClK
RESET
CS
RO
WR
AO
IRQ
SlO-3
RlO-7
SHIFT
CNTllSTS
OUT A0-3
OUT S0-3
1m
Data Bus (Si-directional)
Clock Input
Reset Input
Chip Select
Read Input
Write Input
Buffer Address
Interrupt Request Output
Scan Unes
Return Lil')es
Shift Input
Control/Strobe Input
Display (AI Outputs
Display (BI Outputs
Bland Display Output
II
TM: Z80 is a registered trademark of Zilog.
Rev/1
659

line_dark_gray
UPD8279-5 equivalent
TIMING WAVEFORMS
INPUT FOR AC TESTS
2.4
0.45
fl-PD8279·S
READ
BUS)AO. cs-....,,.------------"""i6c"---------ISYSTEM·S
_Jt::;;:+=======::;;:;;=::1~====;_----ADOAeSS
(READ CONTROL)
O A T A B U S - - - - - - - - - + - - - - - - - - 1 r - - - - - - -__-
IOUTPUTI _ _~~~~~_ _~------~-----------
WRITE
AO. cs -_-...'....r,.-_-_--_-_--_-----'""Ij.,---------(SYSTEM'S_______~.~---------AOORESSBUSI
(WRITE CONTROL)
OATABUS--------""~~----~~,----------
f1NPUT)
DATA MAY CHANGE
CLOCK INPUT
II
663


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UPD8279-5 electronic component.


Information Total 9 Pages
Link URL [ Copy URL to Clipboard ]
Download [ UPD8279-5.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
UPD8279-5The function is PROGRAMMABLE KEYBOARD/DISPLAY INTERFACE. NECNEC

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

UPD8     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search