Semiconductor
82C55A
CMOS Programmable
Peripheral Interface
Description
The Harris 82C55A is a high performance CMOS version of
the industry standard 8255A and is manufactured using a
self-aligned silicon gate CMOS process (Scaled SAJI IV). It
is a general purpose programmable I/O device which may be
used with many different microprocessors. There are 24 I/O
pins which may be individually programmed in 2 groups of
12 and used in 3 major modes of operation. The high
performance and industry standard configuration of the
82C55A make it compatible with the 80C86, 80C88 and
other microprocessors.
Static CMOS circuit design insures low operating power. TTL
compatibility over the full military temperature range and bus
hold circuitry eliminate the need for pull-up resistors. The
Harris advanced SAJI process results in performance equal
to or greater than existing functionally equivalent products at
a fraction of the power.
June 1998
Features
• Pin Compatible with NMOS 8255A
• 24 Programmable I/O Pins
• Fully TTL Compatible
• High Speed, No “Wait State” Operation with 5MHz and
8MHz 80C86 and 80C88
• Direct Bit Set/Reset Capability
• Enhanced Control Word Read Capability
• L7 Process
• 2.5mA Drive Capability on All I/O Ports
• Low Standby Power (ICCSB) . . . . . . . . . . . . . . . . .10µA
Ordering Information
PART NUMBERS
5MHz
CP82C55A-5
IP82C55A-5
CS82C55A-5
IS82C55A-5
CD82C55A-5
ID82C55A-5
8406601QA
8MHz
CP82C55A
IP82C55A
CS82C55A
IS82C55A
CD82C55A
ID82C55A
8406602QA
TEMPERATURE
PACKAGE
RANGE
40 Ld PDIP
44 Ld PLCC
40 Ld
CERDIP
SMD#
44 Pad
CLCC
SMD#
-55
o
C to 125
o
C
0
o
C to 70
o
C
-40
o
C to 85
o
C
0
o
C to 70
o
C
-40
o
C to 85
o
C
0
o
C to 70
o
C
-40
o
C to 85
o
C
-55
o
C to 125
o
C
PKG.
NO.
E40.6
E40.6
N44.65
N44.65
F40.6
F40.6
F40.6
F40.6
J44.A
J44.A
MD82C55A-5/B MD82C55A/B
MR82C55A-5/B MR82C55A/B
8406601XA
8406602XA
Pinouts
82C55A (DIP)
TOP VIEW
PA0
PA3
PA2
PA1
PA0
RD
CS
GND
A1
A0
PC7
PC6
PC5
PC4
PC0
PC1
PC2
PC3
PB0
PB1
PB2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
RD
CS
82C55A (CLCC)
TOP VIEW
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA4
6 5 4 3 2 1 44 43 42 41 40
PA5
PA6
GND 7
PA7
NC 8
WR
A1 9
RESET
A0 10
D0
PC7 11
D1
PC6 12
D2
PC5 13
D3
PC4 14
D4
PC0 15
D5
PC1 16
D6
PC2 17
D7
18 19 20 21 22 23 24 25 26 27 28
V
CC
PB7
PB6
PB5
PB4
PB3
PC3
PB0
PB1
PB2
WR
82C55A (PLCC)
TOP VIEW
RD
PA0
PA1
PA2
PA3
NC
PA4
PA5
PA6
PA7
WR
39 NC
38 RESET
37 D0
36 D1
35 D2
34 D3
33 D4
32 D5
31 D6
30 D7
29 NC
6 5 4 3 2 1 44 43 42 41 40
CS
GND
A1
A0
PC7
NC
PC6
PC5
PC4
PC0
PC1
7
8
9
10
11
12
13
14
15
16
17
18 1920 21 22 23 24 25 26 27 28
PC2
PC3
PB0
PB1
PB2
NC
PB3
PB4
PB5
PB6
PB7
39
38
37
36
35
34
33
32
31
30
29
RESET
D0
D1
D2
D3
NC
D4
D5
D6
D7
V
CC
PB3
PB4
PB5
PB6
PB7
V
CC
NC
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1998
File Number
2969.2
1
HARRIS [ HARRIS CORPORATION ]
