Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

CD82C55A Fiches technique(PDF) 5 Page - Intersil Corporation

No de pièce CD82C55A
Description  CMOS Programmable Peripheral Interface
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CD82C55A Fiches technique(HTML) 5 Page - Intersil Corporation

  CD82C55A Datasheet HTML 1Page - Intersil Corporation CD82C55A Datasheet HTML 2Page - Intersil Corporation CD82C55A Datasheet HTML 3Page - Intersil Corporation CD82C55A Datasheet HTML 4Page - Intersil Corporation CD82C55A Datasheet HTML 5Page - Intersil Corporation CD82C55A Datasheet HTML 6Page - Intersil Corporation CD82C55A Datasheet HTML 7Page - Intersil Corporation CD82C55A Datasheet HTML 8Page - Intersil Corporation CD82C55A Datasheet HTML 9Page - Intersil Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 26 page
background image
5
The modes for Port A and Port B can be separately defined,
while Port C is divided into two portions as required by the
Port A and Port B definitions. All of the output registers,
including the status flip-flops, will be reset whenever the
mode is changed. Modes may be combined so that their
functional definition can be “tailored” to almost any I/O
structure. For instance: Group B can be programmed in
Mode 0 to monitor simple switch closings or display compu-
tational results, Group A could be programmed in Mode 1 to
monitor a keyboard or tape reader on an interrupt-driven
basis.
The mode definitions and possible mode combinations may
seem confusing at first, but after a cursory review of the
complete device operation a simple, logical I/O approach will
surface. The design of the 82C55A has taken into account
things such as efficient PC board layout, control signal defi-
nition vs. PC layout and complete functional flexibility to sup-
port almost any peripheral device with no external logic.
Such design represents the maximum use of the available
pins.
Single Bit Set/Reset Feature (Figure 5)
Any of the eight bits of Port C can be Set or Reset using a
single Output instruction. This feature reduces software
requirements in control-based applications.
When Port C is being used as status/control for Port A or B,
these bits can be set or reset by using the Bit Set/Reset
operation just as if they were output ports.
Interrupt Control Functions
When the 82C55A is programmed to operate in mode 1 or
mode 2, control signals are provided that can be used as
interrupt request inputs to the CPU. The interrupt request
signals, generated from port C, can be inhibited or enabled
by setting or resetting the associated INTE flip-flop, using the
bit set/reset function of port C.
This function allows the programmer to enable or disable a
CPU interrupt by a specific I/O device without affecting any
other device in the interrupt structure.
INTE Flip-Flop Definition
(BIT-SET)-INTE is SET - Interrupt Enable
(BIT-RESET)-INTE is Reset - Interrupt Disable
NOTE:
All Mask flip-flops are automatically reset during mode se-
lection and device Reset.
Operating Modes
Mode 0 (Basic Input/Output). This functional configuration
provides simple input and output operations for each of the
three ports. No handshaking is required, data is simply writ-
ten to or read from a specific port.
Mode 0 Basic Functional Definitions:
• Two 8-bit ports and two 4-bit ports
• Any Port can be input or output
• Outputs are latched
• Input are not latched
• 16 different Input/Output configurations possible
FIGURE 5. BIT SET/RESET FORMAT
D7 D6 D5
D4 D3 D2 D1 D0
BIT SET/RESET
1 = SET
0 = RESET
BIT SELECT
0
BIT SET/RESET FLAG
CONTROL WORD
DON’T
CARE
X
X
X
0 = ACTIVE
1234567
01010101
00110011
00001111
B0
B1
B2
MODE 0 PORT DEFINITION
A
B
GROUP A
#
GROUP B
D4
D3
D1
D0
PORT A
PORTC
(Upper)
PORT B
PORTC
(Lower)
0
0
0
0
Output
Output
0
Output
Output
0
0
0
1
Output
Output
1
Output
Input
0
0
1
0
Output
Output
2
Input
Output
0
0
1
1
Output
Output
3
Input
Input
0
1
0
0
Output
Input
4
Output
Output
0
1
0
1
Output
Input
5
Output
Input
0
1
1
0
Output
Input
6
Input
Output
0
1
1
1
Output
Input
7
Input
Input
1
0
0
0
Input
Output
8
Output
Output
1
0
0
1
Input
Output
9
Output
Input
1
0
1
0
Input
Output
10
Input
Output
1
0
1
1
Input
Output
11
Input
Input
1
1
0
0
Input
Input
12
Output
Output
1
1
0
1
Input
Input
13
Output
Input
1
1
1
0
Input
Input
14
Input
Output
1
1
1
1
Input
Input
15
Input
Input
82C55A


Numéro de pièce similaire - CD82C55A

FabricantNo de pièceFiches techniqueDescription
logo
Harris Corporation
CD82C55A HARRIS-CD82C55A Datasheet
234Kb / 26P
   CMOS Programmable Peripheral Interface
CD82C55A-5 HARRIS-CD82C55A-5 Datasheet
234Kb / 26P
   CMOS Programmable Peripheral Interface
More results

Description similaire - CD82C55A

FabricantNo de pièceFiches techniqueDescription
logo
Toshiba Semiconductor
TMP82C255A TOSHIBA-TMP82C255A Datasheet
682Kb / 32P
   CMOS PROGRAMMABLE PERIPHERAL INTERFACE
logo
Intersil Corporation
CS82C55AZ96 INTERSIL-CS82C55AZ96 Datasheet
560Kb / 29P
   CMOS Programmable Peripheral Interface
logo
Harris Corporation
82C55A HARRIS-82C55A Datasheet
234Kb / 26P
   CMOS Programmable Peripheral Interface
logo
Intersil Corporation
MS82C55A INTERSIL-MS82C55A_06 Datasheet
500Kb / 26P
   CMOS Programmable Peripheral Interface
MS82C55A INTERSIL-MS82C55A Datasheet
502Kb / 24P
   CMOS Programmable Peripheral Interface
logo
List of Unclassifed Man...
SMC82C55AC-5 ETC1-SMC82C55AC-5 Datasheet
293Kb / 6P
   CMOS PROGRAMMABLE PERIPHERAL INTERFACE
logo
Wing Shing Computer Com...
WS82C55A WINGS-WS82C55A Datasheet
457Kb / 25P
   CMOS Programmable peripheral Interface
logo
Intersil Corporation
82C55A INTERSIL-82C55A_06 Datasheet
554Kb / 29P
   CMOS Programmable Peripheral Interface
logo
Renesas Technology Corp
MS82C55A RENESAS-MS82C55A Datasheet
1Mb / 26P
   CMOS Programmable Peripheral Interface
82C55A RENESAS-82C55A Datasheet
818Kb / 30P
   CMOS Programmable Peripheral Interface
Dec 8, 2015
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com