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IA8255
Advanced Information
Sheet
Programmable Peripheral Interface Adapter
FEATURES
•
•
•
•
•
•
Form, Fit, and Function Compatible with the Intel
®
8255A and Harris
©
82C55A
Packaging options available: 40 Pin Plastic DIP or 44 Pin Plastic Leaded
Chip Carrier
24 Programmable Input/Outputs
Static Read/Write or Handshaking Modes
Direct Bit Set/Reset Capability
High Speed, No “Wait State” Operation
The IA8255 uses
innovASIC’
innovative new
f
3
Program
to provide industry with parts that
s
other vendors have declared obsolete. By specifying parts through this program a customer is
assured of never having a component become obsolete again. This advanced information sheet
assumes the original part has been designed in, and so provides a summary of capabilities only. For
new designs contact
innovASIC
for more detailed information.
Intel is a registered trademark of Intel Corporation
Harris is a copyright trademark of Harris Corporation
Package Pinout
N. C.
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA2
PA1
PA0
RD_n
CS_n
GND
A1
A0
PC7
PC6
PC5
PC4
PC0
PC1
PC2
PC3
PB0
PB1
PB2
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
PA7
(41)
IA8255
40 Pin DIP
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
PA5
PA6
(6)
(5)
(4)
(3)
(2)
(1)
(44)
(43)
(42)
WR_n
RESET
D0
D1
D2
D3
D4
D5
D6
D7
VCC
PB7
PB6
(40)
PA7
CS_n
GND
A1
A0
PC7
N. C.
PC6
PC5
PC4
PC0
PC1
RD_n
PA3
(1)
(40)
PA4
WR_n
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(39)
(38)
RESET
D0
D1
D2
D3
N. C.
D4
D5
D6
D7
VCC
IA8255
44 Pin LCC
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PC2
PC3
PB4
PB3
Copyright
©
1999, InnovASIC Inc.
Customer Specific IC Solutions
N. C.
PB7
PB5
INNOVASIC [ INNOVASIC, INC ]
