IP82C237-12 datasheet(2/25 Pages) INTERSIL

Part #	IP82C237-12

Description	CMOS High Performance Programmable DMA Controller

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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2 / 25 page

4-149

82C237

Block Diagram

Pinouts

82C237 (DIP)

TOP VIEW

82C237 (CLCC/PLCC)

TOP VIEW

13

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

IOR

IOW

MEMR

MEMW

DWLE

READY

HLDA

ADSTB

AEN

HRQ

CS

CLK

RESET

DACK2

DACK3

DREQ3

DREQ2

DREQ1

DREQ0

(GND) VSS

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

A7

A6

A5

A4

EOP

A3

A2

A1

A0

VCC

DB0

DB1

DB2

DB3

DB4

DACK0

DACK1

DB5

DB6

DB7

(NOTE)

14

13

12

11

10

9

8

7

17

16

15

2

5

30

35

39

38

37

36

33

34

32

31

29

4

6

3

1

40

41

42

43

44

28

27

26

25

24

23

22

21

20

19

18

CS

DACK2

NC

CLK

HRQ

NC

A3

A2

A1

A0

VCC

DB0

DB1

DB2

DB3

NC

DB4

ADSTB

AEN

RESET

HLDA

NOTE: See Pin Description.

A4 - A7

EOP

RESET

CS

READY

CLK

AEN

ADSTB

MEMR

MEMW

IOR

IOW

TIMING

AND

CONTROL

DREQ0 -

HLDA

HRQ

DACK0 -

PRIORITY

ENCODER

AND

ROTATING

PRIORITY

LOGIC

DACK3

4

DREQ3

4

COMMAND

(8)

MASK

(4)

REQUEST

(4)

MODE

(4 x 6)

STATUS

(8)

TEMPORARY

(8)

INTERNAL DATA BUS

DECREMENTOR

COUNT REG (16)

TEMP WORD

INC DECREMENTOR

REG (16)

TEMP ADDRESS

BUFFER

IO

16-BIT BUS

READ BUFFER

ADDRESS

BASE

(16)

WORD

BASE

COUNT

(16)

READ WRITE BUFFER

ADDRESS

CURRENT

(16)

WORD

CURRENT

COUNT

(16)

16-BIT BUS

BUFFER

WRITE

BUFFER

READ

BUFFER

OUTPUT

CONTROL

COMMAND

D0 - D1

A0 - A3

BUFFER

IO

DWLE

DATA-WIDTH

(4)

Similar Part No. - IP82C237-12

Manufacturer	Part #	Datasheet	Description
Intersil Corporation	IP82C37A	148Kb / 23P	CMOS High Performance Programmable DMA Controller March 1997
Harris Corporation	IP82C37A	204Kb / 23P	CMOS High Performance Programmable DMA Controller
Intersil Corporation	IP82C37A	427Kb / 24P	CMOS High Performance Programmable DMA Controller
Intersil Corporation	IP82C37A-12	148Kb / 23P	CMOS High Performance Programmable DMA Controller March 1997
Harris Corporation	IP82C37A-12	204Kb / 23P	CMOS High Performance Programmable DMA Controller

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Similar Description - IP82C237-12

Manufacturer	Part #	Datasheet	Description
Harris Corporation	82C37	204Kb / 23P	CMOS High Performance Programmable DMA Controller
Intersil Corporation	82C37A	427Kb / 24P	CMOS High Performance Programmable DMA Controller
	82C37A	148Kb / 23P	CMOS High Performance Programmable DMA Controller March 1997
	HS-82C37ARH	268Kb / 21P	Radiation Hardened CMOS High Performance Programmable DMA Controller
NEC	UPD8237A	973Kb / 17P	HIGH-PERFORMANCE PROGRAMMABLE DMA CONTROLLER
Intersil Corporation	HS-82C37ARH	195Kb / 29P	Radiation Hardened CMOS High Performance Programmable DMA Controller
Harris Corporation	HS-82C37	253Kb / 28P	Radiation Hardened CMOS High Performance Programmable DMA Controller
NEC	UPD8257	608Kb / 11P	PROGRAMMABLE DMA CONTROLLER
Intel Corporation	M8257	360Kb / 7P	PROGRAMMABLE DMA CONTROLLER
Advanced Micro Devices	AM8257	519Kb / 8P	Programmable DMA Controller

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IP82C237-12 Datasheet(PDF) 2 Page - Intersil Corporation

IP82C237-12 Datasheet(HTML) 2 Page - Intersil Corporation

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Similar Description - IP82C237-12

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