MD82C59A/B Intersil, MD82C59A/B Datasheet - Page 3

• Manufacturer Part Number: MD82C59A/B
• Description: Interrupt Controller 5V 28-Pin CDIP
• Manufacturer: Intersil

Specifications of MD82C59A/B

• Package: 28CDIP
• Interrupt Mask Option: Yes
• Interrupt Out Delay: 300(Max) ns
• Operating Supply Voltage: 5 V

Pinouts
Functional Diagram
CAS 0
CAS 1
D
GND
7
WR
CS
RD
D7
D6
D5
D4
D3
D2
D1
D0
-D
CAS 0
CAS 1
CAS 2
SP/EN
0
10
11
12
13
14
WR
1
2
3
4
5
6
7
8
9
RD
CS
A
82C59A (PDIP, CERDIP)
0
TOP VIEW
COMPARATOR
CASCADE
BUFFER
BUFFER
3
WRITE
LOGIC
READ/
DATA
BUS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D7 - D0
RD
WR
A0
CS
CAS 2 - CAS 0
SP/EN
INT
INTA
IR0 - IR7
V
A0
INTA
IR7
IR6
IR5
IR4
IR3
IR2
IR1
IR0
INT
SP/EN
CAS 2
INTERNAL BUS
CC
PIN
82C59A
82C59A
Data Bus (Bidirectional)
Read Input
Write Input
Command Select Address
Chip Select
Cascade Lines
Slave Program Input Enable
Interrupt Output
Interrupt Acknowledge Input
Interrupt Request Inputs
FIGURE 1.
SERVICE
(ISR)
REG
IN -
INTA
DESCRIPTION
INTERRUPT MASK REG
CONTROL LOGIC
RESOLVER
PRIORITY
D6
D5
D4
D3
D2
D1
D0
(IMR)
10
11
5
6
7
8
9
12
4
82C59A (PLCC, CLCC)
13
3
TOP VIEW
14
2
15
INTERRUPT
INT
1
REQUEST
(IRR)
REG
16
28
17
27
18
26
25
24
23
22
21
20
19
IR0
IR1
IR2
IR3
IR4
IR5
IR6
IR7
IR7
IR6
IR5
IR4
IR3
IR2
IR1
March 17, 2006
FN2784.5