Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

A8255 Datasheet(PDF) 5 Page - Altera Corporation

Part No. A8255
Description  PROGRAMMABLE PERIPHERAL INTERFACE ADAPTER
Download  13 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ALTERA [Altera Corporation]
Homepage  http://www.altera.com
Logo 

A8255 Datasheet(HTML) 5 Page - Altera Corporation

 
Zoom Inzoom in Zoom Outzoom out
 5 / 13 page
background image
Altera Corporation
49
a8255 Programmable Peripheral Interface Adapter Data Sheet
Note:
(1)
The X indicates “don’t care.”
Notes:
(1)
For example, to reset bit 3 of port C, bit 7 is reset to indicate that the write is in the
port C bit set/reset format. Bits 6 through 4 are “don’t care.” Bits 3 through 1 are
011 to address bit 3, and bit 0 is 0 to indicate a reset operation. The complete data
word is 0XXX0110.
(2)
The X indicates “don’t care.”
Table 3. Control Register Mode Definition Format
Bit
Description
0
Port C (lower) I/O direction:
1 = input
0 = output
1
Port B I/O direction:
1 = input
0 = output
2
Group B mode select:
1 = mode 1
0 = mode 0
3
Port C (upper) I/O direction:
1 = input
0 = output
4
Port A I/O direction:
1 = input
0 = output
6..5
Group A mode select:
00 = mode 0
01 = mode 1
1X = mode 2,
Note (1)
7
1 when writing = mode definition format
Always 1 when reading the control register
Table 4. Port C Bit Set/Reset Format
Note (1)
Bit
Description
0
Bit set/reset:
1 = set
0 = reset
3..1
Bit select address
6..4
XXX,
Note (2)
7
0 when writing = port C bit set/reset format


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
IA8255Programmable Peripheral Interface Adapter 1 2 3 4 InnovASIC, Inc
1NS8255Programmable Peripheral Interface 1 2 3 4 5 MoreNational Semiconductor (TI)
MC6821PERIPHERAL INTERFACE ADAPTER 1 2 3 4 5 MoreMotorola, Inc
M5L8255AP-5PROGRAMMABLE PERIPHERAL INTERFACE 1 2 3 4 5 MoreMitsubishi Electric Semiconductor
HS-82C55ARHRadiation Hardened CMOS Programmable Peripheral Interface 1 2 3 4 5 MoreIntersil Corporation
G65SC21CMOS Peripheral Interface Adapter 1 2 3 4 5 MoreCalifornia Micro Devices Corp
R65C21Peripheral Interface Adapter PIA 1 2 3 4 5 MoreList of Unclassifed Manufacturers
W65C21SPeripheral Interface Adapter PIA 1 2 3 4 5 MoreList of Unclassifed Manufacturers
TMP8255APROGRAMMABLE PERIPHERAL INTERFACE 1 2 3 4 5 MoreToshiba Semiconductor
MA28155Radiation Hard Programmable Peripheral Interface 1 2 3 4 5 MoreDynex Semiconductor

Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
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