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MSM82C59A-2JS Datasheet(PDF) 9 Page - OKI electronic componets

Part # MSM82C59A-2JS
Description  PROGRAMMABLE INTERRUPT CONTROLLER
PDF  28 Pages
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

MSM82C59A-2JS Datasheet(HTML) 9 Page - OKI electronic componets

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¡ Semiconductor
MSM82C59A-2RS/GS/JS
SYSTEM INTERFACE
BASIC OPERATION DESCRIPTION
Data transfers between the 82C59A-2 internal registers and the data bus are listed below.
A0
Address Bus
Control Bus
D7 - D0
8 bits
WR
INTA
Data Bus
MSM82C59A-2
CS
RD
INT
Cascade
Address Bus
CAS0
CAS1
CAS2
SP/EN IR0 IR1 IR2 IR3 IR4 IR5 IR6 IR7
Slave
Program/Enable
Buffer
Interrupt Requests
1
0
0
0
0
A0
Function
1
¥
¥
¥
¥
0
0
1
¥
D4
¥
¥
¥
¥
¥
0
1
¥
¥
D3
¥
¥
¥
¥
0
1
1
1
0
RD
1
1
¥
0
1
0
0
0
1
WR
0
1
¥
0
IRR, ISR, or Poll Word Æ Data Bus
IMR Æ Data bus
Data Bus Æ OCW2
Data Bus Æ OCW3
Data Bus Æ 1CW1
Data Bus Æ OCW1, ICW2, ICW3, ICW4
Data Bus Set to High Impedance (when INTA = 1)
Combinations Prohibited
CS
0
0
0
0
0
0
0
1
¥
Opearation
Read
Read
Write
Write
Write
Write
—
—



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